This document introduces an 8-bit microcontroller named ST7LITE2, which features a single voltage flash memory, data EEPROM, ADC, timers, and SPI interface. It has an 8KB flash program memory with read-out protection and supports in-circuit programming and in-application programming. It also has a 384-byte RAM memory. The microcontroller has an enhanced reset system and low voltage supervisor for safe power-down procedures. Clock sources can be selected as an internal RC oscillator, crystal/ceramic resonator, or external clock. Additionally, it offers various power saving modes, multifunctional bidirectional I/O lines, multiple timers, and a communication interface. The microcontroller is also equipped with an ADC converter with 7 input channels and 13-bit or 10-bit resolution.
The ST7LITE2 is an 8‑bit microcontroller from the ST7 family with 8 Kbytes of single‑voltage flash, 384 bytes of RAM and 256 bytes of data EEPROM. It supports a range of on‑chip peripherals such as SPI, a 10‑bit ADC, multiple timers, and a debug module, and can operate from 2.4 V to 5.5 V.
The manual covers pin descriptions for the 20‑pin DIP and SO packages, register and memory maps, power‑saving modes (Halt, Active‑Halt, Wait, Slow, Auto Wake‑Up), electrical characteristics, and revision history. It also provides guidance on programming, reset management, and interrupt handling.
| Flash program memory | 8 Kbytes |
|---|---|
| RAM | 384 bytes |
| Data EEPROM | 256 bytes |
| Operating supply voltage | 2.4 V to 5.5 V |
| Maximum CPU frequency | 8 MHz (16 MHz with external oscillator) |
| Operating temperature range | -40 °C to +85 °C |
| ADC resolution | 13‑bit (0‑430 mV) / 10‑bit (430 mV‑5 V) |
| I/O lines | Up to 15 multifunctional bidirectional I/O lines |
| Interrupt vectors | 10 interrupt vectors plus TRAP and RESET |
| Power‑saving modes | Halt, Active‑Halt, Wait, Slow, Auto Wake‑Up From Halt |
The device includes 8 Kbytes of single‑voltage flash program memory.
It operates from 2.4 V up to 5.5 V.
The microcontroller provides up to 15 multifunctional bidirectional I/O lines.
The ST7LITE2 supports Halt, Active‑Halt, Wait, Slow, and Auto Wake‑Up From Halt modes.