The 71M6543F, 71M6543H, 71M6543G, and 71M6543GH are Teridian’s 4th-generation polyphase metering systems-on-chips (SoCs) with a 5MHz 8051-compatible MPU core, low-power real- time clock (RTC) with digital temperature compensation, flash memory, and LCD driver.
The 71M6543F, 71M6543H, 71M6543G and 71M6543GH are Teridian’s 4th‑generation polyphase metering system‑on‑chips. They integrate a 5 MHz 8051‑compatible MPU core, a low‑power RTC with temperature compensation, flash memory, LCD driver and a 22‑bit delta‑sigma ADC.
The devices support up to four pulse outputs, seven analog sensor inputs, and optional interfaces to isolated sensors. They are targeted at commercial and industrial electricity meters that require high accuracy and low power consumption.
| Accuracy | 0.1 % over 2000:1 current range |
|---|---|
| Flash Memory (71M6543F/H) | 64 KB Flash, 5 KB RAM |
| Flash Memory (71M6543G/GH) | 128 KB Flash, 5 KB RAM |
| Number of Sensor Inputs | Seven analog inputs with neutral‑current measurement |
| Pulse Outputs | Up to four programmable pulse outputs |
| Line Frequency Range | 46‑64 Hz |
| Sleep Mode Current | 1 A in Sleep Mode |
The 71M6543G provides 128 KB of flash memory and 5 KB of RAM.
They achieve 0.1 % accuracy over a 2000:1 current range.
The devices include seven analog sensor inputs with neutral‑current measurement capability.
The ICs operate over a 46 Hz to 64 Hz line‑frequency range.