This document describes the features and characteristics of the ST7LITE1 8-bit microcontroller, including single voltage Flash memory, data EEPROM, ADC, 4 timers, and SPI communication interface. It has 4 Kbytes of Flash program memory, 256 bytes of RAM, and 128 bytes of data EEPROM. The microcontroller has powerful clock, reset, and supply management features, supports various clock sources, and has an enhanced reset system and low voltage supervisor. It also features multifunctional I/O ports, 4 timers, and SPI synchronous serial interface for communication. Additionally, it supports interrupt management and A/D conversion.
The ST7LITE1 is an 8‑bit microcontroller from STMicroelectronics featuring 4 KB single‑voltage flash memory, 256 B RAM, 128 B data EEPROM, and a range of on‑chip peripherals such as a 12‑bit auto‑reload timer, two 8‑bit Lite timers, a 10‑bit ADC with an internal op‑amp, and an SPI interface. It operates from 2.4 V to 5.5 V and supports clock speeds up to 8 MHz (16 MHz with an external oscillator).\n\nThe device includes 15 multifunctional I/O pins, multiple power‑saving modes, and a built‑in debug module for in‑circuit debugging. Detailed electrical characteristics, pin descriptions, and programming options are provided in the following sections.
| Flash program memory | 4 KB single‑voltage extended Flash (XFlash) |
|---|---|
| RAM | 256 bytes |
| Data EEPROM | 128 bytes |
| Operating supply voltage | 2.4 V to 5.5 V |
| Maximum CPU frequency | 8 MHz (up to 16 MHz with external oscillator) |
| Operating temperature range | -40 °C to +85 °C |
| I/O pins | Up to 15 multifunctional bidirectional I/O lines |
| Timers | 1 × 12‑bit auto‑reload timer (4 PWM outputs) + 2 × 8‑bit Lite timers |
| SPI interface | Synchronous serial interface |
The device operates from 2.4 V to 5.5 V.
It provides up to 15 multifunctional bidirectional I/O lines.
The microcontroller supports Halt, Active‑Halt, Auto Wake‑up from Halt, Wait and Slow modes.