STM8L052R8T6TR — 8-bit EnergyLite MCU with integrated LCD driver
Memory and peripheral fit for metering and HMI
The 256-byte EEPROM, rated for 100k erase/write cycles per the STM8L family, stores calibration constants and configuration parameters without an external serial EEPROM. The 28-channel 12-bit ADC covers multi-sensor inputs — temperature, pressure, current sense — with 1 LSB INL typical. The LCD driver supports up to 4x28 segments, enough for a 7-segment numeric display with annunciators.
Package and I/O count
The 54 I/O lines map to the LCD segments, ADC inputs, and serial interfaces without multiplexing conflicts in most designs. The Tape & Reel variant (TR suffix) is the standard procurement unit for pick-and-place assembly.
The base product number STM8 covers the EnergyLite family, so firmware and PCB layout carry across density variants (e.g., 32 KB or 128 KB Flash siblings) without a board spin.