ST72321AR9-Auto STMicroelectronics, ST72321AR9-Auto Datasheet - Page 2
ST72321AR9-Auto
Manufacturer Part Number
ST72321AR9-Auto
Description
8-bit MCU for automotive with 60 Kbyte Flash, 10-bit ADC, timers, SPI, SCI and I2C interfaces
Manufacturer
STMicroelectronics
Datasheet
1.ST72321R9-AUTO.pdf
(243 pages)
Specifications of ST72321AR9-Auto
Hdflash Endurance
100 cycles, data retention 20 years
Clock Sources
crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock
4 Power Saving Modes
Halt, Active Halt, Wait and Slow
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Contents
Contents
1
2
3
4
5
6
2/243
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Package pinout and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.1
2.2
Register and memory map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Flash program memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
Central processing unit (CPU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.1
5.2
5.3
Supply, reset and clock management . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.1
6.2
6.3
Package pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Main features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.3.1
ICC interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
ICP (in-circuit programming) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
IAP (in-application programming) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Related documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Flash control/status register (FCSR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Main features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
CPU registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.3.1
5.3.2
5.3.3
5.3.4
5.3.5
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Main features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Phase locked loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Readout protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Accumulator (A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Index registers (X and Y) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Program counter (PC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Condition code (CC) register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Stack pointer (SP) register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Doc ID 13829 Rev 1
ST72321xx-Auto
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