71M6513/71M6513H 3-phase Energy Meter IC Data Sheet
This datasheet describes the Teridian 71M6513/71M6513H system‑on‑chip designed for poly‑phase electricity metering. It includes an 8051‑compatible MPU, 21‑bit delta‑sigma ADC, voltage reference, LCD driver, real‑time clock and extensive I/O resources.
The document covers functional blocks such as the analog front end, multiplexer operation, FIR filter, voltage reference, timing diagrams, pin descriptions, electrical ratings and recommended external components, enabling developers to design residential or commercial three‑phase meters. This manual is written in Chinese.
| Supply Voltage Range (V3P3D, V3P3A) | -0.5 V to 4.6 V |
|---|---|
| Analog Input Voltage Range | -0.5 V to V3P3A+0.5 V |
| Operating Junction Temperature (continuous) | 125 °C |
| ADC Resolution Options | 21‑bit (FIR_LEN=0) or 22‑bit (FIR_LEN=1) |
| Flash Memory Size | 64 KB |
The device can operate with either 21‑bit or 22‑bit resolution, selected via the FIR_LEN register.
The high‑accuracy part (71M6513H) offers a voltage reference temperature coefficient of less than 40 ppm/°C.