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Features

Memories

■ 1 to 2 Kbytes single voltage Flash program

memory with readout protection, in-circuit and

in-application programming (ICP and IAP), 10k

write/erase cycles guaranteed, data retention

20 years at 55°C

■ 128 bytes RAM

■ Up to 128 bytes data EEPROM, 300k

write/erase cycles guaranteed, data retention

20 years at 55°C

Clock, reset and supply management

■ Internal low voltage supervisor (LVD) for

reliable power-on/-off start-up procedures

■ Clock sources: Internal trimmable 8 MHz RC

oscillator, internal low power, low frequency

RC oscillator or external clock

■ 5 power saving modes: Halt, Auto Wake-up

from Halt, Active Halt, Wait and Slow

Interrupt management

■ 11 interrupt vectors plus TRAP and RESET

■ 5 external interrupt lines (on 5 vectors)

I/O ports

■ 5 multifunctional bidirectional I/O lines

■ 1 additional output line

■ 6 alternate function lines

■ 5 high sink outputs

2 timers

■ One 8-bit Lite timer (LT) with prescaler

including: Watchdog, 1 real-time base and 1

input capture

■ One 12-bit auto-reload timer (AT) with output

compare function and PWM

A/D converter

■ 10-bit resolution for 0 to VDD

■ 5 input channels

Instruction set

■ 8-bit data manipulation

■ 63 basic instructions with illegal opcode

detection

■ 17 main addressing modes

■ 8 x 8 unsigned multiply instruction

Development tools

■ Full hardware/software development package

■ Debug module

Description

The ST7LUxx devices are members of the ST7 microcontroller family designed for midrange

automotive applications running from 3 to 5.5V.

All ST7 devices are based on a common industry-standard 8-bit core, featuring an

enhanced instruction set and are available with Flash or preprogramed memory. The ST7

family architecture offers both power and flexibility to software developers, enabling the

design of highly efficient and compact application code.

The on-chip peripherals include an A/D converter, a Lite timer and and an auto-reload timer.

For power economy, the microcontroller can switch dynamically into Halt, Auto Wake-up

from Halt, Active Halt, Wait, or Slow mode when the application is in idle or standby state.

The devices feature an on-chip Debug Module (DM) to support in-circuit debugging (ICD).

For a description of the DM registers, refer to the ST7 ICC Protocol Reference Manual.

Typical applications include:

● all types of car body applications such as window lift, DC motor control, sunroof

● Remote keyless entry (RKE)

● Safety microcontroller (sub-MCU)