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Complete Utility Metering Solutions - Microchip Technology Flipbook PDF
2 Utility Metering Solutions Design Innovation in Energy, Gas, Water and Heat Meters The metering market is facing many
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Utility Metering Solutions Summer 2012
Complete Utility Metering Solutions
www.microchip.com/meter
Design Innovation in Energy, Gas, Water and Heat Meters The metering market is facing many challenges in today’s rapidly evolving world. Government regulations, competitive forces, technology innovations and end customer expectations are fueling unprecedented changes in this market. Having a “smart” partner who can help you stay current and allow you to react quickly will be the difference between success and failure. With today’s meter designs, innovation rests in many areas, some driven by migrations from mechanical meters to first‑time electronic intelligence, while others are driven by the advanced intelligence and two-way communications of smart meters and the demands of tomorrow’s smart grids. Microchip understands the design challenges facing meter designers, whether it’s increasing meter accuracy and reliability while lowering total system cost or engaging the end customer in their home as part of the home area network. Our solutions are used in millions of meters worldwide, Microchip wants to be a partner in your success, not just a vendor. Microchip offers a complete portfolio of 8-, 16- and 32-bit microcontrollers, 16-bit digital signal controllers, energy measurement integrated circuits (ICs), analog components, Flash memory and serial EEPROMs. Our devices allow designers to: ■■ Directly drive inexpensive LED and LCD displays ■■ Add wireless communication for automated meter reading ■■ Implement anti-tampering techniques ■■ Manage low-power design with nanoWatt XLP technology ■■ Integrate real time clock for advanced billing schemes ■■ Simplify meter calibration ■■ mTouch™ sensing solutions enable designers to easily integrate touch-sensing functionality into their designs
Basic Smart Meter
2
Utility Metering Solutions
Our free MPLAB® Integrated Design Environment provides a single platform for product development which shortens the time it takes to complete new designs or to modify existing designs to meet regional needs. Out Metering Design Center features complete access to all of Microchip’s metering application notes, software libraries, reference designs and other technical documentation to help engineers get their products to market quickly and efficiently. Microchip’s global 24/7 technical support team, regional training centers and our local application teams are here to help you meet your customers’ expectations and schedules. We are committed to being part of your success.
Energy Measurement ICs The MCP39XX devices are highly accurate energy measurement analog front ends with up to six channels for single phase and three-phase metering. When paired with a PIC® microcontroller, engineers have a complete, highly accurate solution for energy measurement in utility metering and other power monitoring applications. The MCP3911 features two 16/24-bit resolution delta‑sigma A/D converters, an internal voltage reference, and a Programmable Gain Amplifier (PGA) with gain up to 32. The 94.5 dB SINAD and −106.5 dB THD performance allow for the highest accuracy designs. The MCP3906A and MCP3909 feature a dedicated active power calculation block giving a measurement error of 0.1% over a 1000:1 dynamic range.
Utility Metering Solutions and Development Systems Microcontrollers and Digital Signal Controllers
To enable a wide range of utility metering solutions, Microchip offers a flexible Microcontroller (MCU) and Digital Signal Controller (DSC) platform solution with a common Integrated Development Environment (IDE), MPLAB. The broad portfolio of 8-/16-/32-bit MCUs and DSCs lowers total system cost by enabling the appropriate level of integration (including display functions, real-time clock and calendar, and temperature sensing with the Charge Time Measurement Unit (CTMU)) to match utility metering system requirements and reducing battery life through eXtreme Low Power (XLP) performance. Design flexibility for adapting to changing or local system requirements is provided through our unique approach that allows easy migration across the entire MCU and DSC portfolio. Available utility metering solutions with free energy calculation firmware range from a single-chip design with the PIC18F87J72 which offers ease of use and smaller board space to a two-chip solution using Microchip’s energy measuring IC with any MCU or DSC.
Analog and Interface Devices
From devices for measuring temperature and signals to flow sensors and infrared interfaces, Microchip provides a wide portfolio of analog and interface components that are well suited for metering applications. Low power, precision operational amplifiers enable signal acquisition for accurate measurements of current, voltage, temperature or flow. Microchip’s family of digital temperature sensors provide accurate measurements to compensate for temperature drifts in meter components. Infrared interface devices provide a platform of products for developing a robust communication method for data gathering at meter locations.
Memory Products
For reliable data and code storage, Microchip offers a broad range of memory devices, which include SRAM, EEPROM and Flash. By supporting a variety of densities that can operate over wide voltage and temperature ranges in very small packages, any metering application can be supported. With SPI-compatible Serial SRAM devices, unlimited endurance and fast Write times can be supported. When non-volatile memory is needed, Microchip has very high endurance Serial EEPROMs that have the highest Erase/Write cycle endurance in the industry. These devices are available with I2C™, SPI or Microwire serial interfaces to support any microcontroller serial port that has been selected. For applications with higher-density memory requirements, Microchip’s SuperFlash® SPI, SQI® and Parallel Flash products are ideal solutions. In designs that require a boot loader, SPI Flash can be used to store the boot code, making it available for download into shadow memory upon power‑up. For applications that require execute-in-place, the higher bandwidth SQI Flash and Parallel Flash have that capability. SuperFlash products also support cost effective non-volatile memory data storage solutions while offering industry-leading features coupled with fixed and fast program/erase times, ultra-low power consumption, high endurance and excellent reliability. For more information visit www.microchip.com/memory.
I2C Real-Time Clock/Calendar (RTCC) For the various timekeeping needs, Microchip now offers the MCP794XX family of Real-Time Clocks which have a usable amount of non-volatile SRAM, EEPROM and a battery switchover circuit for backup power. For accurate timekeeping this family has a digital trimming circuit with a wide adjustment range to compensate for crystal frequency drift that can occur over temperature. In the event of a power failure, the RTCC has a power-fail timestamp that can log the time that main power was lost and the time that it was restored. A Unique ID with a MAC Address is also included in protected memory to provide a unique identifier when communicating over wired or wireless interfaces. For more information visit www.microchip.com/clock.
Wired Communications for Smart Grid Power line repeaters collect data from power meters using wired communications such as RS-485 and Power Line Carrier (PLC) technology. This data is transmitted to concentrators for processing and subsequent transmission to utility companies using power line modems (PLM) and Ethernet among other technologies. The dsPIC®Digital Signal Controller (DSC) general purpose family is well suited for low cost energy meters due to its fast and efficient CPU, DMA channels and small package footprints. The PIC32MX6 family has both the performance needed to process Automated Meter Reading data and a rich set of connectivity features including UARTs, SPIs, USB and Ethernet. For more information visit www.microchip.com/powerline.
Wireless Communications for Smart Grid The proposed Smart Grid initiatives are placing the meter as the hub of communication from the home to the utility provider. Enabling communication within the grid is key to presenting, monitoring and controlling usage of our precious resources. Microchip provides development platforms to enable wireless communication of ZigBee® networks including the Smart Energy Profile, Wi-Fi®Connectivity and Sub-GHz AMI solutions. See all of Microchip’s wireless solutions at www.microchip.com/wireless.
Complete Technical Resources for Metering Designs Engineering resources are often limited, which makes access to existing application reference designs and technical documentation critical in reducing time to market. Microchip’s Utility Meter Design Center at www.microchip.com/meter offers material that walks through all of the building blocks and considerations in creating a utility metering design. The design center also features complete access to all of Microchip’s metering application notes, reference designs and other technical documentation to help engineers get their products to market quickly and efficiently.
Development Systems Low-cost and easy-to-learn development tools can save designers time, money and engineering resources. Microchip offers a number of development boards and evaluation kits that demonstrates the capabilities of its silicon solutions for utility metering and power monitoring applications. Utility Metering Solutions
3
Utility Metering Development Systems Single Phase Meter Reference Designs
Development Tools and Evaluation Boards
MCP3901 and PIC18F65J90 Shunt Meter Reference Design (ARD00342)
MCP3911 ADC Evaluation Board for 16-bit MCUs (ADM00398)
This fully functional IEC Class 0.5 compliant single-phase meter uses a low-cost design that does not use any transformers and requires few external components. The PIC18F65J90 directly drives the LCD and includes both an isolated USB connection for meter calibration and access to the device power calculations. The system calculates active energy, active power, RMS current, RMS voltage, reactive energy, reactive power, apparent power, and other typical power quantities.
This evaluation board for 16-Bit MCUs system provides the ability to evaluate the performance of the MCP3911 dual-channel ADC. It also provides a development platform for 16-bit PIC MCU-based applications, using existing 100-pin PIM systems compatible with the Explorer 16 and other high pin count PIC MCU demo boards. The system comes with a programmed PIC24FJ256GA110 PIM module that communicates with the included PC software for data exchange and ADC configuration.
PIC18F87J72 Single Phase Energy Meter Reference Design (ARD00280)
MCP3905A Energy Meter Evaluation Board (MCP3905EV)
This is a fully functional single phase meter featuring the PIC18F87J72 MCU with Analog Front End. This low cost design uses a shunt for the current sensor. The PIC18F87J72 directly drives the LCD and includes both an isolated USB connection and non-isolated RS232 interface for meter calibration and access to the device power calculations. The system calculates active/reactive energy, forward/reverse energy, active/reactive/apparent power and RMS current/voltage.
This evaluation board allows the user to test a variety of energy meter designs. On the input side, high voltage line and load AC-plug headers are included, along with mounting holes for shunts, current transformers and screw‑type connections for wiring. On the output side, a large prototype area is included along with optical isolation and a standard PICtail™ header for experimenting with a variety of PIC microcontroller‑based energy meter designs.
MCP3905A Energy Meter Reference Design (MCP3905RD-PM1)
MCP3903 ADC Evaluation Board for 16-Bit MCUs (ADM00310)
This low-cost energy meter board acts as a stand-alone energy meter or as the analog front-end design for LCD microcontroller-based meters. The MCP3905A design is specified with an energy measurement error of 0.1% typical across 1:500 dynamic range for high accuracy energy meter designs. The board is compliant with EMC requirements per energy metering standards IEC62053 and legacy IEC61036, IEC1046 and IEC687.
The MCP3903 ADC Evaluation Board for 16-bit MCU system provides the ability to evaluate the performance of the MCP3903 six channel sigma-delta ADC. It also provides a development platform for 16-bit PIC MCU-based applications, using existing 100-pin PIM systems.
3-Phase Meter Reference Designs MCP3909/dsPIC33F Advanced 3-Phase Energy Meter Reference Design (MCP3909RD-3PH3) This fully functional energy meter reference design has many advanced features such as harmonic analysis, per phase distortion information, sag detection, four quadrant energy measurement, and active and reactive power calculation. It uses Microchip’s 16-bit MCU dsPIC33FJ64GP206. This reference design takes advantage of the dsPIC33F by performing all calculations in the DSP engine. All output quantities are calculated in the frequency domain yielding a large number of outputs for a variety of meter designs.
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Utility Metering Solutions
Explorer 16 Development Board (DM240001/ DM240002) and MRF24J40MA PICtail Plus Daughter Board (AC164134-1) This board offers an economical way to evaluate Microchip’s 16- and 32-bit microcontrollers, and dsPIC33F DSC Families. Developers are able to create IEEE 802.15.4™/ZigBee and IEEE 802.11™/Wi-Fi wireless communication applications by adding wireless PICtail daughter cards to the Explorer 16 using the associated software protocol stack.
Product Specifications Energy Measurement AFE Typical Voltage Reference Drift (ppm/°C)
Output Type
Analog vdd (V)
Digital vdd (V)
Features
2
7
SPI
2.7 to 3.6
2.7 to 3.6
Phase compensation, programmable data rate up to 125ksps
2
12
SPI
4.5 to 5.5
2.7 to 5.5
Phase compensation, programmable data rate up to 64 ksps
6
12
SPI
4.5 to 5.5
2.7 to 5.5
Phase compensation, programmable data rate up to 64 ksps
Devuce
Resolution
SINAD
ADC Channels
MCP3911
24-bit
94.5 dB
MCP3901
24-bit
91 dB
MCP3903
24-bit
91 dB
Energy Measurement ICs Dynamic Range
Measurement Error
ADC Channels
Typical Voltage Reference Drift (ppm/°C)
Output Type
Analog vdd (V)
Digital vdd (V)
MCP3905A
500:1
0.1%
2
15
Active power pulse
4.5 to 5.5
4.5 to 5.5
Active power calculation
MCP3906A
1000:1
0.1%
2
15
Active power pulse
4.5 to 5.5
4.5 to 5.5
Active power calculation
MCP3909
1000:1
0.1%
2
15
Active power pulse, SPI
4.5 to 5.5
4.5 to 5.5
Active power calculation
RTCC
Temp. Sensing
Device
Features
Recommended 8-bit PIC Microcontrollers Device
Flash
RAM
LCD
UART
Power Down/RTCC* Current* (µA)
MIPS
ADC Bits
PIC18F87J72
12
16 & 12
64–128
4
4 × 33
2
RTCC
CTMU
–
3.6/1.6
PIC18F67K90
16
12
32–128
4–Feb
4 × 33
2
RTCC
CTMU
–
0.06/1.1
DMA
PIC18F67J93
12
12
64–128
4
4 × 33
2
RTCC
CTMU
–
3.6/1.6
PIC18F67J90
12
10
64–128
4
4 × 33
2
RTCC
CTMU
–
3.6/1.6
PIC18F65J90
12
10
Aug–32
2–Jan
4 × 33
2
Timer 1
–
–
3.5/9
PIC18F87K90
16
12
32–128
4–Feb
4 × 33
2
RTCC
CTMU
–
0.06/1.1
PIC18F89J93
12
12
64–128
4
4 × 33
2
RTCC
CTMU
–
3.6/1.6
PIC18F87J90
12
10
64–128
4
4 × 33
2
RTCC
CTMU
–
3.6/1.6
PIC18F85J90
12
10
Aug–32
2–Jan
4 × 33
2
Timer 1
–
–
3.5/9
PIC18F67K22
16
12
62–128
4–Feb
–
2
RTCC
CTMU
–
0.06/1.1
PIC18F67J11
12
12
64–128
4
–
2
Timer 1
–
–
3.6/21
PIC18F65J11
12
10
Aug–32
2–Jan
–
2
Timer 1
–
–
3.5/9
Recommended 16-bit PIC Microcontrollers and dsPIC Digital Signal Controlls (DSCs) MIPS
ADC Bits
Flash
RAM
LCD
UART
RTCC
Temp. Sensing
DMA
Power Down/RTCC* Current* (µA)
PIC24FJ128GA310
16
12
64–128
8
8 × 60
4
RTCC
CTMU
Yes
0.04/0.4
PIC24FJ128GA308
16
12
64–128
8
8 × 46
4
RTCC
CTMU
Yes
0.04/0.4
PIC24FJ128GA306
16
12
64–128
8
8 × 30
4
RTCC
CTMU
Yes
0.04/0.4
PIC24FJ256GA110
16
10
128–256
16
–
4
RTCC
CTMU
–
4/3.5
PIC24FJ128FA010
16
10
64–128
8
–
2
RTCC
–
–
27/8
dsPIC33FJ256GP710A
40
12
64–256
16
–
2
–
–
Yes
50/–
dsPIC33EP64GP506
60
12
32–256
8
–
2
–
–
Yes
35/–
PIC24HJXXXGP20X
40
12
128–256
8
–
2
–
–
Yes
50/–
Device
Recommended 32-bit PIC Microcontrollers MIPS
ADC Bits
Flash
RAM
LCD
UART
RTCC
Temp. Sensing
DMA
Power Down/RTCC* Current* (µA)
PIC32MX120F032D
40
10
32
8
–
2
RTCC
CTMU
Yes
44/23
PIC32MX120F032B
40
10
32
8
–
2
RTCC
CTMU
Yes
44/23
PIC32MX130F064D
40
10
64
16
–
2
RTCC
CTMU
Yes
44/23
PIC32MX130F064B
40
10
64
16
–
2
RTCC
CTMU
Yes
44/23
PIC32MX250F128D
40
10
128
32
–
2
RTCC
CTMU
Yes
44/23
PIC32MX150F128D
40
10
128
32
–
2
RTCC
CTMU
Yes
44/23
PIC32MX150F128B
40
10
128
32
–
2
RTCC
CTMU
Yes
44/23
PIC32MX664F128
80
10
128
32
–
6
RTCC
–
Yes
41/23
PIC32MX360F256
80
10
256
32
–
2
RTCC
–
Yes
30/23
PIC32MX675F256
80
10
256
64
–
6
RTCC
–
Yes
41/23
PIC32MX695F512
80
10
512
128
–
6
RTCC
–
Yes
41/23
Device
*RTCC: Real-Time Clock and Calendar
Utility Metering Solutions
5
Product Specifications Recommended Flash Memory Memory Type
Bus
Density (bits)
Operating Voltage
Typical Standby Current
Speed
Typical Program/Erase Endurances
SST25VF512A/010A
Flash
SPI
512K to 1M
2.7V to 3.6V
8 μA
33 MHz
100K cycles
8-SOIC, 8-TDFN-5, 8-XFBGA
SST25VF020B/040B/080B
Flash
SPI
2M to 8M
2.7V to 3.6V
5 μA
80 MHz
100K cycles
8-SOIC, 8-TDFN-5, 8/8/16-XFBGA
SST25VF016B/032B
Flash
SPI
16M to 32M
2.7V to 3.6V
5 μA
up to 80 MHz
100K cycles
8-SOIC, 8-TDFN-5
SST25VF064C
Flash
SPI
64M
2.7V to 3.6V
5 μA
80 MHz
100K cycles
8-SOIC, 16-SOIC, 8-TDFN-8
Device
Supported Packages
SST25WF512/010/020/ 040/080
Flash
SPI
512K to 8M
1.65V to 1.95V
2/2/2/ 2/5 μA
up to 75 MHz
100K cycles
8-SOIC, 8-TDFN-5, 8-XFBGA
SST26VF016/032
Flash
SQI®
16M to 32M
2.7V to 3.6V
8 μA
80 MHz
100K cycles
8-SOIC, 8-TDFN-5
SST26WF032
Flash
SQI
32M
1.65V to 1.95V
8 μA
80 MHz
100K cycles
8-SOIC, 8-TDFN-5
SST39WF512/010/020/040
Flash
×8 Parallel
512K to 4M
2.7V to 3.6V
1 μA
55 ns, 70 ns
100K cycles
32-PLCC, 32-TSOP, 48-TFBGA, 34-WFBGA
SST39VF200A/400A
Flash
×16 Parallel
2M to 4M
2.7V to 3.6V
3 μA
55 ns, 70 ns
100K cycles
48-TSOP, 48-TFBGA, 48-WFBGA, 48-XFLGA
SST39VF801C/802C
Flash
×16 Parallel
8M
2.7V to 3.6V
3 μA
55 ns, 70 ns
100K cycles
48-TSOP, 48-TFBGA, 48-WFBGA
SST39VF1601C/1602C
Flash
×16 Parallel
16M
2.7V to 3.6V
3 μA
70 ns
100K cycles
48-TSOP, 48-TFBGA
SST39VF3201C/3202C
Flash
×16 Parallel
32M
2.7V to 3.6V
3 μA
70 ns
100K cycles
48-TSOP, 48-TFBGA
SST38VF6401/2/3/4
Flash
×16 Parallel
64M
2.7V to 3.6V
3 μA
90 ns
100K cycles
48-TSOP, 48-TFBGA
SST39WF400B/800B
Flash
×16 Parallel
4M to 8M
1.65V to 1.95V
5 μA
70 ns
100K cycles
48-TFBGA, 48-WFBGA, 48-XFLGA
SST39WF1601/2
Flash
×16 Parallel
16M
1.65V to 1.95V
2 μA
70 ns
100K cycles
48-TFBGA, 48-WFBGA
Max Stanby Current (@5.5V, 85°C)
Max Clock Frequency
Recommended Serial Memory Device
Density (bits)
Operating Voltage
Typical E/W Endurance
Typical Meter Selection
Memory Type
Bus
93LC46B
EEPROM
μwire
1K
2.5V to 5.5V
1 μA
3 MHz
> 1M cycles
Heat
24LC02B
EEPROM
I2C
2K
2.5V to 5.5V
1 μA
400 kHz
> 1M cycles
Gas, Water
Typical Packages in Meters 8-SN, 8-P 5-OT, 8-SN, 8-MS, 8-ST
24LC024
EEPROM
I2C
2K
2.5V to 5.5V
1 μA
400 kHz
> 1M cycles
Water
93LC66B
EEPROM
μwire
4K
2.5V to 5.5V
1 μA
3 MHz
> 1M cycles
Heat
24LC08B
EEPROM
I2C
8K
2.5V to 5.5V
1 μA
400 kHz
> 1M cycles
Electricity
8-SN, 8-MS, 8-ST
24LC16B
EEPROM
I2C
16K
2.5V to 5.5V
1 μA
400 kHz
> 1M cycles
Electricity
8-SN, 8-MS, 8-ST
24LC64
EEPROM
I2C
64K
2.5V to 5.5V
1 μA
400 kHz
> 1M cycles
Electricity, Heat
8-SN, 8-MS, 8-ST
24LC128
EEPROM
I2C
128K
2.5V to 5.5V
1 μA
1 MHz
> 1M cycles
Electricity, Gas
8-SN, 8-MS, 8-ST
24LC256
EEPROM
I2C
256K
2.5V to 5.5V
1 μA
1 MHz
> 1M cycles
Electricity
8-SN, 8-MS, 8-ST
25AA256
EEPROM
SPI
256K
1.8V to 5.5V
1 μA
10 Mhz
> 1M cycles
Electricity
24LC512
EEPROM
I2C
512K
2.5V to 5.5V
1 μA
1 MHz
> 1M cycles
Electricity, Water
25AA512
EEPROM
SPI
512K
1.8V to 5.5V
10 μA
20 MHz
> 1M cycles
Electricity
8-SN, 8-SM
24LC1025
EEPROM
I2C
1M
2.5V to 5.5V
5 μA
1 MHz
> 1M cycles
Electricity, Water
8-SN, 8-SM
25AA1024
8-SN, 8-MS, 8-ST 8-SN, 8-P
8-SN, 8-MS, 8-ST 8-SN, 8-SM
EEPROM
SPI
1M
1.8V to 5.5V
12 μA
20 MHz
> 1M cycles
Electricity
8-SM
23K640
SRAM
SPI
64K
2.7V to 5.5V
4 μA
20 MHz
∞
Electricity
8-SN, 8-ST
23K256
SRAM
SPI
256K
2.7V to 5.5V
4 μA
20 MHz
∞
Electricity
8-SN, 8-ST
Recommended Real-Time Clock/Calendar (RTCC) Products Interface
Outputs
Digital Trim(1) (Adj/Range)
SRAM (Bytes)
EEPROM (kbits)
ID(2)/ MAC
Minimum Voltage
Ibat (nA)
Additional Features
Pins
Packages
MCP79410
I2C
1 MFP (IRQ/CLK)
+1 ppm ±127 ppm
64
1
Blank ID
Vcc: 1.8V Vbat: 1.3V
700
Battery Switchover, Power-Fail Timestamp
8
SOIC (SN), TTSOP (ST), MSOP (MS), TDFN (MNY)
MCP79411
I2C
1 MFP (IRQ/CLK)
+1 ppm ±127 ppm
64
1
EUI-48
Vcc: 1.8V Vbat: 1.3V
700
Battery Switchover, Power-Fail Timestamp
8
SOIC (SN), TTSOP (ST), MSOP (MS), TDFN (MNY)
MCP79412
I2C
1 MFP (IRQ/CLK)
+1 ppm ±127 ppm
64
1
EUI-64
Vcc: 1.8V Vbat: 1.3V
700
Battery Switchover, Power-Fail Timestamp
8
SOIC (SN), TTSOP (ST), MSOP (MS), TDFN (MNY)
MCP795W20
SPI
1) CLK 2) IRQ 3) WDO RST
+1 ppm ±255 ppm
64
2
Blank ID
Vcc: 1.8V Vbat: 1.3V
700
Battery Switchover, Power-Fail Timestamp, Watchdog, Events
14
SOIC (SL), TSSOP (ST)
MCP795W21
SPI
1) CLK 2) IRQ 3) WDO RST
+1 ppm ±255 ppm
64
2
EUI-48
Vcc: 1.8V Vbat: 1.3V
700
Battery Switchover, Power-Fail Timestamp, Watchdog, Events
14
SOIC (SL), TSSOP (ST)
MCP795W22
SPI
1) CLK 2) IRQ 3) WDO RST
+1 ppm ±255 ppm
64
2
EUI-64
Vcc: 1.8V Vbat: 1.3V
700
Battery Switchover, Power-Fail Timestamp, Watchdog, Events
14
SOIC (SL), TSSOP (ST)
Device
Note 1: 1 ppm is approximately 86 msec/day Note 2: Unique ID is 64 bits (I2C) and 128 bits (SPI) of protected EEPROM.
6
Utility Metering Solutions
Product Specifications and Utility Metering Resources Recommended Analog and Interface Solutions Analog-to-Digital Converters
Maximum Sampling Rate (samples/sec)
# of Input Channels
Interface
Supply Voltage Range (V)
Tpical Supply Current (μA)
Typical INL
Temperature Range (°C)
Features
18 to 12
4 to 240
1/2/2/4 Diff
I2C
2.7 to 5.5
155
10 ppm
−40 to +125
PGA, Vref
16 to 12
15 to 240
1/2/2/4 Diff
I2C
2.7 to 5.5
155
10 ppm
−40 to +125
PGA, Vref
12
100k
1/2/4/8 SE
SPI
2.7 to 5.5
400
±1 LSB
−40 to +85
–
Device
Resolution (bits)
MCP3421/2/3/4 MCP3425/6/7/8 MCP3201/2/4/8
Op Amps
Temperature Sensors Typical Maximum Maximum Maximum Vcc Range Accuracy Accuracy @ Temperature Supply Interface (V) (°C) 25°C (°C) Range (°C) Current (μA)
# per pkg
GBWP (kHz)
Iq Typical (μA)
Vos Max (mV)
Operating Voltage (V)
Temperature Range (°C)
Device
MCP602
2
2,800
230
2000
2.7 to 6.0
−40 to +125
MCP9800
0.5
1
−55 to +155
2.7 to 5.5
400
MCP6272
2
2,000
170
3000
2.0 to 6.0
−40 to +125
TCN75A
0.5
1
−55 to +125
2.7 to 5.5
400
I2C
MCP6292
2
10,000
1000
3000
2.4 to 6.0
−40 to +125
TC77
0.5
3
−55 to +125
2.7 to 5.5
400
SPI
Device
I2C
Recommended Wireless Solutions IEE 802.15.4 Transceivers/Modules Pin Count
Device
Freq. Range
Sensitivity
Power Output
RSSI
Tx Pwr Rx Pwr
Clock
Sleep
MAC
MAC Feature
Encryption
Interface
Packages
MRF24J40
40
2.405–2.48
−95
0
Yes
23
19
20 MHz
Yes
Yes
CSMA-CA
AES128
4-wire SPI
40-QFN
MRF24J40MA
12
2.405–2.48
−95
0
Yes
23
19
20 MHz
Yes
Yes
CSMA-CA
AES128
4-wire SPI
12/Module
MRF24J40MB
12
2.405–2.475
−102
20
Yes
130
25
20 MHz
Yes
Yes
CSMA-CA
AES128
4-wire SPI
12/Module
MRF24J40MC
12
2.405–2.475
−102
20
Yes
130
25
20 MHz
Yes
Yes
CSMA-CA
AES128
4-wire SPI
12/Module
Clock
Sleep
Sub-GHz Transceivers/Modules Pin Count
Freq. Range
Sensitivity
MRF49XA
16
433/868/915
MRF89XA
32
868/915/950
MRF89XAM8A
12
868 MHz
Device
Power Output
RSSI
Tx Pwr
Rx Pwr
−110
7
−113
12.5
−113
12.5
Interface
Packages
Yes
15 mA @ 0 dBm
11
10 MHz
Yes
4-wire SPI
16-TSSOP
Yes
25 mA @ 10 dBm
3
12.8 MHz
Yes
4-wire SPI
32-TQFN
Yes
25 mA @ 10 dBm
3
12.8 MHz
Yes
4-wire SPI
12/Module
IEEE 802.11 Modules Device
Radio
Power Consumption Off*
Sleep**
PS
Rx
Tx 120 mA (0 dBm)
185 mA (+10 dBm)
Max. Power Output
Sustained Throughout
Host MCU
+12 dBm
Up to 2.7 mbps
On module or any MCU
RN171
802.11 b/g
–
4 μA
–
30 mA
RN131G/RN131C
802.11 b/g
–
4 μA
–
40 mA
210 mA (+18 dBm)
+18 dBm
Up to 2.7 mbps
On module or any MCU
MRF24WB0MA/MB
802.11 b/g
0.1 μA
–
250 μA
85 mA
154 mA
+10 dBm
Up to 1 mbps
PIC MCU
MRF24WG0MA/MB
802.11 b/g
0.1 mA
–
4 mA
95 mA
240 mA
+18 dBm
Up to 5 mbps
PIC MCU
*Off: denoted as Hibernate state of MRF24WB0MA/MB. State information is not saved. **Sleep mode: device state saved, wake on input change and RTC active.
Application Notes & Tech Briefs Metering AN939 Designing Energy Meters with the PIC16F873A AN994 IEC Compliant Active-Energy Meter Design Using the MCP3905/6 AN1013 Gas and Water Metering with the PIC16F91X Family AN1300 Designing with the MCP3901 Dual Channel Analog‑to-Digital Converters TB1092 Designing Heat Meters Using PIC16F9XX Microcontrollers Communications AN833 Microchip TCP/IP Stack Application Note AN979 Interfacing I2C Serial EEPROMs to PIC18 Devices AN1255 Microchip ZigBee PRO Feature Set Protocol Stack Display AN234 AN529 AN557 AN563 AN587 AN658 TB029 TB062
Hardware Techniques for PICMicrocontrollers Multiplexing LED Drive and 4 × 4 Keypad Sampling Four Channel Digital Voltmeter with Display and Keyboard Using PIC16C5X Microcontrollers as LCD Drivers Interfacing PIC Microcontrollers to an LCD Module LCD Fundamentals Using PIC16C92X Microcontrollers Complementary LED Drive High Power IR LED Driver Using the PIC16C781/782
Temperature Sensing AN1333 Use and Calibration of the Internal Temperature Indicator TB3016 Using the PIC MCU CTMU for Temperature Measurement
Security AN583 Implementation of the Data Encryption Standard Using PIC17C42 AN821 Advanced Encryption Standard Using the PIC16XXX AN953 Data Encryption Routines for PIC18 Microcontrollers Timekeeping AN582 Low-Power Real-Time Clock AN590 A Clock Design Using the PIC16C54 for LED Displays and Switch Inputs AN615 Clock Design Using Low Power/Cost Techniques AN649 Yet Another Clock Featuring the PIC16C924 AN1155 Run-Time Calibration of Watch Crystals AN1365 Recommended Usage of Microchip’s I2C Serial RTCC Devices TB028 Technique to Calculate Day of Week Miscellaneous AN606 Low-Power Design Using PIC Microcontrollers AN828 Measuring Temperature with the PIC16F84A Watchdog Timer AN851 A Flash Bootloader for PIC16 and PIC18 Devices AN871 Solving Thermal Measurement Problems Using the TC72 and TC77 Digital Silicon Temperature Sensors AN913 Interfacing the TC77 Thermal Sensor to a PIC Microcontroller AN981 Interfacing a MCP9700 Analog Temperature Sensor to a PIC Microcontroller ADN011 Flexible Integrated Temp Sensors Lower System Costs TB008 Transformerless Power Supply Temperature Sensing
Utility Metering Solutions
7
Support
Training
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