INTRODUCTION
The ST7LITE3 is a member of the ST7 microcontroller family. All ST7 devices are based on a common industry-standard 8-bit core, featuring an enhanced instruction set.
The ST7LITE3 features FLASH memory with byte-by-byte In-Circuit Programming (ICP) and InApplication Programming (IAP) capability.

Features
■ Memories
   – 8 Kbytes program memory: single voltage extended Flash (XFlash) Program memory with read-out protection, In-Circuit Programming and In-Application programming (ICP and IAP), data retention: 20 years at 55°C.
   – 384 bytes RAM
   – 256 bytes data EEPROM with read-out protection. 300K write/erase cycles guaranteed, data retention: 20 years at 55°C.
■ Clock, Reset and Supply Management
   – Enhanced reset system
   – Enhanced low voltage supervisor (LVD) for main supply and an auxiliary voltage detector (AVD) with interrupt capability for implementing safe power-down procedures
   – Clock sources: Internal RC 1% oscillator, crystal/ceramic resonator or external clock
   – Optional x4 or x8 PLL for 4 or 8 MHz internal clock
   – Five Power Saving Modes: Halt, Active-Halt, Wait and Slow, Auto Wake Up From Halt
■ I/O Ports
   – Up to 15 multifunctional bidirectional I/O lines
   – 7 high sink outputs
■ 5 Timers
   – Configurable Watchdog Timer
   – Two 8-bit Lite Timers with prescaler, 1 realtime base and 1 input capture
   – Two 12-bit Auto-reload Timers with 4 PWM outputs, input capture and output compare functions
■ 2 Communication Interfaces
   – Master/slave LINSCI™ asynchronous serial interface
   – SPI synchronous serial interface
■ Interrupt Management
   – 10 interrupt vectors plus TRAP and RESET
   – 12 external interrupt lines (on 4 vectors)
■ A/D Converter
   – 7 input channels
   – 10-bit resolution
■ Instruction Set
   8-bit data manipulation
   – 63 basic instructions with illegal opcode detection
   – 17 main addressing modes
   – 8 x 8 unsigned multiply instructions
■ Development Tools
   – Full hardware/software development package
   – DM (Debug module)