SY7M712J

• 32-bit ARM Cortex M0 core, up to 40MHz clock
• 512KB of Flash memory with copy/debug protection
• 76KB RAM (48KB MPU and crypto hardware, 16KB CE code, 8KB CE data, 4KB LCD)
• Dedicated 64-bit 40MHz Compute Engine (CE) core
• Optimized CE code image provided by Silergy, suitable for most metering applications and adaptable to specific applications
• Compatible with capacitively coupled isolated remote sensor ICs (SY7M007, SY7M007A)
• 3.0V to 3.6V supply in Mission Mode
• 1µA current draw in Sleep Mode
• Brownout Mode including analog features functional with 2.5V VBAT supply
• On-chip digital temperature sensor (±2°C)
• Configurable ADC sampling rate, up to 8kHz
• On-chip RTC with accurate 1-second pulse output
• ±0.1% Wh accuracy over 5,000:1 current range in CT mode
• Extensive hardware support for encryption and decryption: 128/192/256 AES, 256/384/512 SHA2, 32-bit TRNG, P-256/384 elliptical curve
• Multiple wake sources for anti-tamper:

- Wake on timer

- Wake on edge at GPIO pins (4 GPIO wake pins)

- Wake on UART receive signal (RX0, RX1)

- Wake on voltage comparator event and reset

• Single 32kHz crystal provides all operating clocks
• Internal R/C backup oscillator
• Up to 61 LCD segment pins, up to 8 commons, 6 pages, and up to 71 GPIO pins, all are interrupt-capable (LQFP-100)
• Up to 80 LCD segment pins and up to 92 GPIO pins (LQFP128)
• 8KB LCD memory, 15 LCD pages, up to 5V LCD supply
• Two master SPI ports, one slave SPI port
• One independent I2C port, one I2C portshared with SPI pins
• Six UARTs(two are 9-bit capable, four are 8-bit compatible)
• Four PWM outputs, up to 2.5MHz, programmable duty cycle
• Two pulse generator outputs with programmable frequency and duty cycle for the optional supply of capacitively coupled isolated remote sensor ICs (SY7M007, SY7M007A) via a transformer

The SY7M7xxJ/SY7T7xxJ is a versatile electricity metering SoC for polyphase electricity meters and power monitoring systems, featuring Silergy’s proprietary Teridian power measurement technology.

The part contains three dedicated ADCs (ADCS) for current measurement and one multiplexed ADC (ADCM) for phase voltages and neutral current. CTs or Rogowski coils can be used as current sensors, and shunts can be connected using up to three SY7M007 capacitively coupled remote interface ICs.

An embedded 64-bit Compute Engine (CE) operating from a separate RAM at 40MHz performs computations, data formatting, and reporting of metrology parameters to the Cortex M0 core, which also operates at 40MHz. With 512KB integrated flash memory for storing code, nonvolatile calibration coefficients and device configuration settings, the part offers an autonomous metrology solution that can interface to an optional host processor through its SPI, UART, or I2C ports.

The part provides extensive hardware support for encryption and decryption, including a true random number generator.

The SY7M713J is available in a 100-pin LQFP package that is pin-to-pin compatible with the SY7M213H. The SY7M763J is available in a 128-pin LQFP package, offering 19 additional DIO/LCD segment pins, and the SY7T733J offers a space saving 68-pin QFN package.