71M6543F/H and 71M6543G/GH Electricity Meter IC Data Sheet, is the 4th generation multi-phase electricity meter SoC, including: 8051 compatible MPU, low-power real-time clock (RTC) with digital compensation, flash memory and LCD driver. Using our Single Converter Technology® , embedded one 22-bit Σ- Δ ADC digital temperature sensor, seven analog inputs, digital temperature compensation, precision voltage reference and 32-bit compute engine (CE), with only a few external components to support various meter designs.
The 71M6543 family is Teridian's fourth‑generation multiphase electric‑meter system‑on‑chip (SoC). It integrates an 8051‑compatible MPU, a low‑power RTC, flash memory, LCD driver, and a 22‑bit Σ‑Δ ADC, enabling meter designs with minimal external components. The devices support both isolated sensor interfaces and current‑transformer configurations, targeting commercial and industrial metering applications.
The datasheet details hardware architecture, functional blocks, electrical specifications, pin assignments, and ordering information. It also includes timing diagrams, register maps, and application notes for integrating the IC with 71M6xx3 isolation sensors and external EEPROM or flash programming interfaces. This manual is written in Chinese.
| RAM size | 5 KB |
|---|---|
| ADC resolution | 22‑bit Σ‑Δ |
| Analog inputs | 7 channels |
| Sleep mode current | 1 µA |
| Operating temperature (continuous) | 125 °C |
| Supply voltage range (V3P3SYS, V3P3A) | -0.5 V to +4.6 V |
The IC provides seven analog input channels.
Sleep mode draws only about 1 µA.
The device can operate continuously up to 125 °C.