ST72321J Datasheet, PDF (1/179 Pages) STMicroelectronics – 8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, 5 TIMERS, SPI, SCI, I2C INTERFACE

ST72321J
8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC,
5 TIMERS, SPI, SCI, I²C INTERFACE
s Memories
– 48 to 60K dual voltage High Density Flash
(HDFlash) or ROM with read-out protection
capability. In-Application Programming and
In-Circuit Programming for HDFlash devices
– 1.5 to 2K bytes RAM
– HDFlash endurance: 100 cycles, data reten-
tion: 20 years at 55°C
s Clock, Reset And Supply Management
– Enhanced low voltage supervisor (LVD) for
main supply and auxiliary voltage detector
(AVD) with interrupt capability
– Clock sources: crystal/ceramic resonator os-
cillators, internal or external RC oscillator,
clock security system and bypass for external
clock
– PLL for 2x frequency multiplication
– Four Power Saving Modes: Halt, Active-Halt,
Wait and Slow
s Interrupt Management
– Nested interrupt controller
– 10 interrupt vectors plus TRAP and RESET
– 9 external interrupt lines (on 4 vectors)
s Up to 32 I/O Ports
– 32 multifunctional bidirectional I/O lines
– 22 alternate function lines
– 12 high sink outputs
s 5 Timers
– Main Clock Controller with: Real time base,
Beep and Clock-out capabilities
– Configurable watchdog timer
– 16-bit Timer A with: 1 input capture, 1 output
compare, external clock input, PWM and
pulse generator modes
– 16-bit Timer B with: 2 input captures, 2 output
compares, PWM and pulse generator modes
Device Summary
Features
Program memory - bytes
RAM (stack) - bytes
Operating Voltage
Temp. Range (ROM)
Temp. Range (Flash)
Packages
ST72(F)321J9
60K
2K (256)
up to -40°C to +125°C
TQFP44
10 x 10
– 8-bit PWM Auto-reload timer with: 4 PWM out-
puts, output compare and time base interrupt,
external clock with event detector
s 3 Communication Interfaces
– SPI synchronous serial interface
– SCI asynchronous serial interface (LIN com-
patible)
– I²C multimaster interface
s 1 Analog Peripheral
– 10-bit ADC with 12 input pins
s Instruction Set
– 8-bit Data Manipulation
– 63 Basic Instructions
– 17 main Addressing Modes
– 8 x 8 Unsigned Multiply Instruction
s Development Tools
– Full hardware/software development package
– In-Circuit Testing capability
3.8V to 5.5V
up to -40°C to +125°C
TQFP44 10x10 (JxT)
ST72(F)321J7
48K
1536 (256)
-40°C to +85 °C
July 2003
Rev. 1.8
1/179
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