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INTRODUCTION

The ST7LITE1 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 ST7LITE1 features FLASH memory with byte-by-byte In-Circuit Programming (ICP) and InApplication Programming (IAP) capability.

■ Memories

– 4 Kbytes single voltage extended Flash (XFlash) Program memory with read-out protection, In-Circuit Programming and In-Application programming (ICP and IAP). 10K write/ erase cycles guaranteed, data retention: 20 years at 55°C.

– 256 bytes RAM

– 128 bytes data E2PROM 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 1 RC oscillator (on some devices), crystal/ceramic resonator or external clock

– Internal 32-MHz input clock for Auto-reload timer

– Optional x4 or x8 PLL for 4 or 8 MHz internal clock

– Five Power Saving Modes: Halt, Active-Halt, Auto Wake-up from Halt, Wait and Slow

■ I/O Ports

– Up to 15 multifunctional bidirectional I/O lines

– 7 high sink outputs

■ 4 Timers

– Configurable watchdog timer

– Two 8-bit Lite Timers with prescaler, 1 realtime base and 1 input capture

– One 12-bit Auto-reload Timer with 4 PWM outputs, input capture and output compare functions

■ Communication Interface

– SPI synchronous serial interface

■ Interrupt Management

– 10 interrupt vectors plus TRAP and RESET

– 15 external interrupt lines (on 4 vectors)

■ A/D Converter

– 7 input channels

– Fixed gain Op-amp

– 13-bit precision for 0 to 430 mV (@ 5V VDD)

– 10-bit precision for 430 mV to 5V (@ 5V VDD)

■ 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)