ST72321BXXX-AUTO Datasheet, PDF (1/247 Pages) STMicroelectronics – 8-bit MCU for automotive with 32 to 60 Kbyte Flash/ROM, ADC, 5 timers, SPI, SCI, I2C interface

ST72321Bxxx-Auto
8-bit MCU for automotive with 32 to 60 Kbyte Flash/ROM,
ADC, 5 timers, SPI, SCI, I2C interface
Features
Memories
■ 32 to 60 Kbyte dual voltage High Density Flash
(HDFlash) 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
■ 15/9 external interrupt lines (on 4 vectors)
1 analog peripheral (low current coupling)
■ 10-bit ADC with up to 16 input ports
LQFP64
10 x 10
LQFP64
14 x 14
LQFP44
10 x 10
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
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
Development tools
■ Full HW/SW development pkg, ICT capability
Table 1. Device summary
Device
Prog. memory
ST72321BR9-Auto
ST72321BAR9-Auto
ST72321BJ9-Auto
ST72321BR7-Auto
ST72321BAR7-Auto
ST72321BJ7-Auto
ST72321BR6-Auto
ST72321BAR6-Auto
ST72321BJ6-Auto
Flash/ROM
60 Kbytes
Flash/ROM
48 Kbytes
Flash/ROM
32 Kbytes
RAM (stack)
2048 (256)
bytes
1536 (256)
bytes
1024 (256)
bytes
Oper. voltage Temp. range
3.8 to 5.5V
Up to
-40 to 125°C
Package
LQFP64
LQFP44
LQFP64
LQFP44
LQFP64
LQFP44
14x14
10x10
10x10
14x14
10x10
10x10
14x14
10x10
10x10
October 2007
Rev 1
1/247
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