SY7T108G

• Powerful 32-bit ARM Cortex M0 core
• 64KB (SY7T108F), 128KB (SY7T108G) of Flash memory
• 8KB (SY7T108F), 12KB (SY7T108G) data RAM, 128 bytes NV-RAM
• Up to 10MHz clock frequency
• Dedicated 32-bit 10MHz 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 sensors (SY7M007) – contact your Silergy representative for the SY7M007 data sheet.
• Brownout mode functional with 2.5V VBAT supply
• On-chip digital temperature sensor
• Configurable ADC sampling rate, up to 16kHz (practical restrictions on CE cycles and resolution apply)
• On-chip RTC with accurate 1-second pulse output
• ±0.1% Wh accuracy over 5,000:1 current range with CT
• Large selection of on-chip features
• Single 32kHz crystal provides all operating clocks
• Internal 32kHz backup R/C clock generator
• Up to 36 LCD segment pins, up to 8 commons, 15 pages
• Up to 45 GPIO pins, all are interrupt-capable
• Pre-amp gain selectable 1 or 8 for ADCS
• SPI/I2C slave, SPI master ports, three UARTs, four counters
• Low-power operation for line-cut tamper mode

The SY7T108F/G is a versatile electricity metering SoC for single-phase electricity meters and power monitoring systems. The SY7T108F/G contains one dedicated ADC (ADCS) and one multiplexed ADC (ADCM) to accommodate all single-phase metering configurations. Shunts, CTs, or Rogowski coils can be used as current sensors.

An embedded 32-bit Compute Engine (CE) performs all necessary computations and data formatting for accurate reporting of metrology parameters to the Cortex M0 core. With integrated flash memory for storing code, nonvolatile calibration coefficients and device configuration settings, the SY7T108F/G offers a completely autonomous solution and can interface to a host processor through its SPI, UART, or I2C ports. The device is available in a 64-pin LQFP package.