ST72321AR6-Auto STMicroelectronics, ST72321AR6-Auto Datasheet - Page 238

• Manufacturer Part Number: ST72321AR6-Auto
• Description: 8-bit MCU for automotive with 32 Kbyte Flash, 10-bit ADC, timers, SPI, SCI and I2C interfaces
• Manufacturer: STMicroelectronics

Specifications of ST72321AR6-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

Known limitations
22.1.6
Note:
238/243
Clearing active interrupts outside interrupt routine
When an active interrupt request occurs at the same time as the related flag is being
cleared, an unwanted reset may occur.
Clearing the related interrupt mask will not generate an unwanted reset.
Concurrent interrupt context
The symptom does not occur when the interrupts are handled normally, that is, when:
●
●
●
If these conditions are not met, the symptom can be avoided by implementing the following
sequence:
Perform SIM and RIM operation before and after resetting an active interrupt request.
Example:
Nested interrupt context
The symptom does not occur when the interrupts are handled normally, that is, when:
●
●
●
If these conditions are not met, the symptom can be avoided by implementing the following
sequence:
The interrupt flag is cleared within its own interrupt routine
The interrupt flag is cleared within any interrupt routine
The interrupt flag is cleared in any part of the code while this interrupt is disabled
SIM
Reset interrupt flag
RIM
The interrupt flag is cleared within its own interrupt routine
The interrupt flag is cleared within any interrupt routine with higher or identical priority
level
The interrupt flag is cleared in any part of the code while this interrupt is disabled
PUSH CC
SIM
Reset interrupt flag
POP CC
Doc ID 13829 Rev 1
ST72321xx-Auto