ST72321J7-Auto STMicroelectronics, ST72321J7-Auto Datasheet - Page 8
ST72321J7-Auto
Manufacturer Part Number
ST72321J7-Auto
Description
8-bit MCU for automotive with 48 Kbyte Flash, 10-bit ADC, timers, SPI, SCI and I2C interfaces
Manufacturer
STMicroelectronics
Datasheet
1.ST72321R9-AUTO.pdf
(243 pages)
Specifications of ST72321J7-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
17
18
19
8/243
10-bit A/D converter (ADC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
17.1
17.2
17.3
17.4
17.5
17.6
Instruction set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
18.1
18.2
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
19.1
16.7.2
16.7.3
16.7.4
16.7.5
16.7.6
16.7.7
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Main features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
17.3.1
17.3.2
17.3.3
Low power modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
ADC registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
17.6.1
17.6.2
17.6.3
17.6.4
CPU addressing modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
18.1.1
18.1.2
18.1.3
18.1.4
18.1.5
18.1.6
18.1.7
Instruction groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
18.2.1
Parameter conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
I2C status register 1 (SR1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
I2C status register 2 (SR2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
I2C clock control register (CCR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
I2C data register (DR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
I2C own address register (OAR1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
I2C own address register (OAR2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
A/D converter configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Starting the conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Changing the conversion channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Control/status register (ADCCSR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Data register (ADCDRH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
Data register (ADCDRL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
ADC register map and reset values . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
Inherent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
Immediate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Direct . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Indexed (no offset, short, long) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Indirect (short, long) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
Indirect Indexed (Short, Long) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
Relative (Direct, Indirect) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
Using a prebyte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Doc ID 13829 Rev 1
ST72321xx-Auto
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