ST72321RX Datasheet, PDF (1/193 Pages) STMicroelectronics – SPI synchronous serial interface

ST72321Rx
ST72321ARx ST72321Jx
64/44-pin 8-bit MCU with 32 to 60K Flash/ROM, ADC,
five timers, SPI, SCI, I²C interface
Features
■ Memories
– 32K 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
– 1K to 2K RAM
– HDFlash endurance: 100 cycles, data reten-
tion: 40 years at 85°C
■ Clock, Reset And Supply Management
– Enhanced low voltage supervisor (LVD) for
main supply and auxiliar 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 on 64-pin devices
– 15/9 external interrupt lines (on 4 vectors)
■ Up to 48 I/O Ports
– 48/32/24 multifunctional bidirectional I/O lines
– 34/22/17 alternate function lines
– 16/12/10 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
LQFP64
14 x 14
LQFP32
7x7
LQFP64
10 x 10
LQFP44
10 x 10
– 8-bit PWM Auto-reload timer with: 2 input cap-
tures, 4 PWM outputs, output compare and
time base interrupt, external clock with event
detector
■ 3 Communications Interfaces
– SPI synchronous serial interface
– SCI asynchronous serial interface
– I²C multimaster interface
■ 1 Analog peripheral
– 10-bit ADC with up to 16 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
Program memory - bytes
RAM (stack) - bytes
Operating Voltage
Temp. Range
Package
ST72321R9/ST72321AR9/ ST72321R7/ST72321AR7/
ST72321J9
ST72321J7
ST72321R6/ST72321AR6
Flash/ROM 60K
Flash/ROM 48K
Flash/ROM 32K
2048 (256)
1536 (256)
1024 (256)
3.8 to 5.5V
-40 to +125°C, -40 to +85°C
LQFP64 14x14 (R), LQFP64 10x10 (AR), LQFP44 10x10 (J)
March 2009
Rev 2
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