ST7232A datasheet(1/154 Pages) STMICROELECTRONICS

Part #	ST7232A

Description	8-BIT MCU WITH 8K FLASH/ROM, ADC, 4 TIMERS, SPI, SCI INTERFACE

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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1 / 154 page

April 2005

1/154

Rev. 1

ST7232A

8-BIT MCU WITH 8K FLASH/ROM,

ADC, 4 TIMERS, SPI, SCI INTERFACE

■ Memories

– 8K dual voltage High Density Flash (HDFlash)

or ROM with read-out protection capability. In-

Application Programming and In-Circuit Pro-

gramming for HDFlash devices

– 384 bytes RAM

– HDFlash endurance: 100 cycles, data reten-

tion: 20 years at 55°C

■ Clock, Reset And Supply Management

– Clock sources: crystal/ceramic resonator os-

cillators and bypass for external clock

– PLL for 2x frequency multiplication

– Four Power Saving Modes: Halt, Active-Halt,

Wait and Slow

■ Interrupt Management

– Nested interrupt controller

– 14 interrupt vectors plus TRAP and RESET

– 6 external interrupt lines (on 4 vectors)

■ Up to 32 I/O Ports

– 24 multifunctional bidirectional I/O lines

– 17 alternate function lines

– 10 high sink outputs

■ 4Timers

– Main Clock Controller with: Real time base,

Beep and Clock-out capabilities

– Configurable watchdog timer

– two 16-bit Timers with: 2 input captures, 2 out-

putcompares, PWM and pulse generator

modes

■ 2 Communications Interfaces

– SPI synchronous serial interface

– SCI asynchronous serial interface

■ 1 Analog peripheral (low current coupling)

– 10-bit ADC with up to 12 robust input ports

■ Instruction Set

– 8-bit Data Manipulation

– 63 Basic Instructions

– 17 main Addressing Modes

– 8 x 8 Unsigned Multiply Instruction

■ Development Tools

– Full hardware/software development package

– In-Circuit Testing capability

Device Summary

TQFP32

7 x 7

SDIP32

400mil

Features

ST72F32AK2

ST7232AK1

ST7232AK2

Program memory - bytes

FLASH 8K

ROM 4K

ROM 8K

RAM (stack) - bytes

384 (256)

Operating Voltage

3.8V to 5.5V

Temp. Range

up to -40°C to +85°C

Package

TQFP32 7x7 , SDIP32 400mils

1

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