ST72321XX Datasheet, PDF (1/243 Pages) STMicroelectronics – PLL for 2x frequency multiplication

ST72321xx-Auto
8-bit MCU for automotive with 32/60 Kbyte Flash/ROM,
ADC, 5 timers, SPI, SCI, I2C interface
Features
Memories
■ 32 to 60 Kbyte dual voltage High Density Flash
(HDFlash) or ROM ROM with readout
protection capability. In-application
programming and in-circuit programming for
HDFlash devices
■ 1 to 2 Kbyte RAM
■ HDFlash endurance: 100 cycles, data retention
20 years
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
oscillators, internal RC oscillator and bypass
for external clock
■ PLL for 2x frequency multiplication
■ 4 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 external interrupt lines (on 4 vectors)
1 analog peripheral
■ 10-bit ADC with up to 16 input ports
Up to 48 I/O ports
■ 48//32 multifunctional bidirectional I/O lines
■ 34//22 alternate function lines
■ 16//12 high sink outputs
LQFP64
10 x 10
LQFP64
14 x 14
LQFP44
10 x 10
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
output compares, external clock input on 1
timer, 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 event
detector
3 communications interfaces
■ SPI synchronous serial interface
■ SCI asynchronous serial interface
■ I²C multimaster interface
Instruction set
■ 8-bit data manipulation
■ 63 basic instructions
■ 17 main addressing modes
■ 8x8 unsigned multiply instruction
Development tools
■ Full hardware/software development package,
ICT capability
Table 1. Device summary
Reference
Part number
ST72321AR6-Auto,
ST72321R6-Auto,
ST72321xx-Auto
ST72321AR7-Auto,
ST72321J7-Auto, ST72321R7-Auto
ST72321AR9-Auto,
ST72321J9-Auto, ST72321R9-Auto
August 2010
Doc ID 13829 Rev 1
1/243
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