System on Chip, abbreviated as SoC’, indicates that the system is on the chip. All key modules are integrated on a chip, including MCU, analog IP, digital IP, and memory (or EMIF). It is usually customized or the standard product for certain usage. In the energy metering field, SoC usually integrates MCU, metering module, real-time clock module, Flash and RAM memory, LCD driver module, UART/SPI/I2C communication module, and GPIO module.
poly-phase SoC, 44-LQFP, multifunction, 64KB Flash, 4KB SRAM, with RTC, low cost
support IEC 62053-21:2003, IEC
62053-22:2003 and IEC 62053-23:2003
single 5V supply, wide range: 3.0V~5.5V
8 independent oversampling Σ/ΔADC
<0.1% error in active energy over a
dynamic range of 2000:1
<0.2% error in reactive energy over a
dynamic range of 2000:1
internal reference: 1.185V (drift 20ppm/°C)
current input: CT
up to 3 UART interfaces and 5 timers
supply watch-dog timer
support PWM output
memory: 64KB Flash, 4KB SRAM
integrated RTC and temperature sensor,
digital crystal frequency compensation for calibration and temperature
variation
operating temperature: -40~+85°C
44 – LQFP
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