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ST72324 QUICK REFERENCE NOTE

1 OVERVIEW OF DEVICE FEATURES

ST72324 family extends the ST7 mid-range for appliance, industrial and automotive applica-

tions, requiring medium and large memory capacities and up to 32 I/O ports. The device has

software LIN compatibility and supports extended temperature range (-40°C to +125°C),

which are key features for supporting automotive applications.

Table 1. Device features

Program Memory

8 to 32k dual voltage Flash or ROM with Read-out protection capability

RAM

384 to 1K bytes

Package

SDIP42, TQFP44 10x10,SDIP32, TQFP32 7x7

Number of I/O ports

Up to 32 I/O ports

– 32/24 multi functional bidirectional I/O lines

– 22/17 alternate function lines

– 12/10 high sink outputs

Clock Source

– External Clock Source

– 4 Crystal/Ceramic Oscillator types

– Internal High Frequency RC Oscillator

Power Saving Modes

Halt, Active-Halt, Wait and Slow

Interrupt Management

– Nested interrupt controller

– 10 interrupt vectors plus TRAP and RESET

– 9/6 external interrupt lines (on 4 vectors)

Operating Voltage

3.8V to 5.5V

Temperature Range

-40°C to +125°C

A/D

10-bit A/D with up to 12 input pins

Timers

– Main Clock Controller with: Real time base, Beep and Clock-out ca-

pabilities

– Configurable watchdog timer

– Two 16-bit timers with input capture, output compare and PWM

modes

Communication Peripherals

– SPI synchronous serial interface

– SCI asynchronous serial interface (LIN compatible)

Instruction Set

– 8-bit Data Manipulation

– 63 Basic Instructions

– 17 main Addressing Modes

– 8 x 8 Unsigned Multiply Instruction

Special Features

In-Application Programming and In-Circuit Programming