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GENERAL DESCRIPTION

INTRODUCTION

The ST72311R, ST72511R, ST72512R and ST72532R devices are members of the ST7 microcontroller family. They can be grouped as follows:

– ST725xxR devices are designed for mid-range applications witha CAN bus interface (Controller Area Network)

– ST72311R devices target the same range of applications but without CAN interface.

All devices are based on a common industry standard 8-bit core, featuring an enhanced instruction set.

Under software control, all devices can be placed in WAIT, SLOW, ACTIVE-HALT or HALT mode, reducing power consumption when the application is in idle or standby state.

■ Memories

– 16K to 60K bytes Program memory (ROM,OTP and EPROM) with read-out protection

– 256 bytes E2PROM Data memory (only on ST72532R4)

– 1024 to 2048 bytes RAM

■ Clock, Reset and Supply Management

– Enhanced reset system

– Low voltage supply supervisor

– Clock sources: crystal/ceramic resonator os cillator or external clock

– Beep and Clock-out capability

– 4 Power Saving Modes: Halt, Active-Halt, Wait and Slow

■ Interrupt Management

– Nested interrupt controller

– 13 interrupt vectors plus TRAP and RESET

– 15 external interrupt lines (on 4 vectors)

– TLI dedicated top level interrupt pin

■ 48 I/O Ports

– 48 multifunctional bidirectional I/O lines

– 32 alternate function lines

– 12 high sink outputs

■ 5 Timers

– Configurable watchdog timer

– Real time clock timer

– One 8-bit auto-reload timer with 4 independ ent PWM output channels, 2 input captures, output compares and external clock with event detector (except on ST725x2R4)

– Two 16-bit timers with: 2 input captures, 2 output compares, external clock input on one timer, PWM and Pulse generator modes

■ 3 Communications Interfaces

– SPI synchronous serial interface

– SCI asynchronous serial interface

– CAN interface (except on ST72311Rx)

■ 1 Analog peripheral

– 8-bit ADC with 8 input channels

■ Instruction Set

– 8-bit data manipulation

– 63 basic instructions

– 17 main addressing modes

– 8 x 8 unsigned multiply instruction

– True bit manipulation

■ Development Tools

– Full hardware/software development package