71M6513

Features:

< 0.1% WH accuracy over 2000:1 range (71M6513H version)
Exceeds IEC61036 / IEC62053 / ANSIC12.20
Voltage reference < 10ppm/°C spec (71M6513H version)
Six sensor inputs-VDD referenced
Four quadrant metering
Voltage angles-phase sequence
Digital temperature compensation
21bit 2nd-order delta-sigma ADC
Independent 32bit compute engine
Low jitter pulse outputs
40-70Hz line frequency range 
Phase compensation (±7°)
Battery Backup for RAM and RTC
< 30mW @3.3V, 13.2mW back up
Flash memory option with security 
8-bit microcontroller (8051)
Integrated ICE for MPU debug
LCD driver (<168 pixels) 
High speed SSI serial output
RTC for time of use functions
Two Event counter/timers
Watchdog timer
Power fail monitor 
Up to 22 general purpose I/O pins
64kB Flash/ROM
7kB RAM 
Two UARTs for IR and AMR 
Third software UART via DIO pins
100-lead Exposed Pad LQFP package 
     (epLQFP)


Application

• Industrial Meters
• Commercial Meters
• Residential Meters


Description

The TDK 71M6513 is a highly integrated SOC with an MCU core,  RTC, FLASH and LCD driver. TDK's Single Converter Technology™ 71M6513 with a 21bit 2nd order delta-sigma ADC, 6 analog inputs,digital temperature compensation, precision voltage reference and 32 bit computation engine supports a wide range of polyphase metering applications with very few low cost external components. A 32kHz crystal timebase for the entire system and internal battery backup support for RAM and RTC further reduce system cost.  

Maximum design flexibility of 71M6513 is supported with multiple UARTs, I²C, power fail comparator,  5V LCD charge pump, up to 22 DIO pins and in-system programmable FLASH which can be updated with data or application code in operation. Easy conversion to ROM offers unprecedented cost structure for high volume applications. The device is offered in high (0.1%) and low (0.5%) accuracy versions for multifunction residential/commercial meter applications requiring multiple voltage/current inputs, larger LCD or DIO features.
                      
A complete array of 71M6513 ICE and development tools, programming libraries and reference designs enable rapid development and certification of meters that meet most demanding worldwide electricity metering standards.