ST7232A Datasheet, PDF (1/154 Pages) STMicroelectronics – 8-BIT MCU WITH 8K FLASH/ROM, ADC, 4 TIMERS, SPI, SCI INTERFACE

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
TQFP32
7x7
SDIP32
400mil
■ 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
Features
Program memory - bytes
RAM (stack) - bytes
Operating Voltage
Temp. Range
Package
ST72F32AK2
FLASH 8K
ST7232AK1
ROM 4K
384 (256)
3.8V to 5.5V
up to -40°C to +85°C
TQFP32 7x7 , SDIP32 400mils
ST7232AK2
ROM 8K
April 2005
Rev. 1
1/154
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