ST72321M6 Datasheet, PDF (1/175 Pages) STMicroelectronics – 80-pin 8-bit MCU with 32 to 60 Kbytes Flash, ADC, five timers, SPI, SCI, I2C interface

ST72321M6
ST72321M9
80-pin 8-bit MCU with 32 to 60 Kbytes Flash, ADC,
five timers, SPI, SCI, I²C interface
Features
■ Memories
– 32 Kbytes to 60 Kbytes dual voltage High
Density Flash (HDFlash) with read-out protec-
tion capability. In-application programming
and In-circuit programming.
– 1 Kbyte to 2 Kbytes RAM
– HDFlash endurance: 100 cycles at 85 °C;
data retention: 40 years at 85 °C
■ 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 RC oscillator 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
– Top Level Interrupt (TLI) pin
– 15 external interrupt lines (on 4 vectors)
■ Up to 64 I/O ports
– 64 multifunctional bidirectional I/O lines
– 34 alternate function lines
– 16 high sink outputs
■ 5 timers
– 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-
put compares, external clock input on one tim-
er, PWM and pulse generator modes
– 8-bit PWM Auto-Reload timer with: 2 input
captures, 4 PWM outputs, output compare
and time base interrupt, external clock with
LQFP80
14 x 14
event detector
■ 4 Communication interfaces
– SPI synchronous serial interface
– SCI asynchronous serial interface
– I²C multimaster interface
(SMbus V1.1 compliant)
■ Analog periperal (low current coupling)
– 10-bit ADC with 16 input 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
Table 1. Device summary
Features
Flash program memory
RAM (stack) - bytes
Operating voltage
Temperature range
Package
ST72321M9
60 Kbytes
2048 bytes (256 bytes)
3.8 V to 5.5 V
-40 °C to +85 °C
LQFP80 14x14
ST72321M6
32 Kbytes
1024 (256 bytes)
May 2009
Doc ID 12706 Rev 2
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