ST72321J7-Auto STMicroelectronics, ST72321J7-Auto Datasheet - Page 112
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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16-bit timer
13.4
13.5
Note:
13.6
112/243
Low power modes
Table 56.
Interrupts
Table 57.
The 16-bit timer interrupt events are connected to the same interrupt vector (see
Interrupts on page
Control Bit is set and the interrupt mask in the CC register is reset (RIM instruction).
Summary of timer modes
Table 58.
Input Capture 1 event/Counter reset in PWM mode
Input Capture 2 event
Output Compare 1 event (not available in PWM mode)
Output Compare 2 event (not available in PWM mode)
Timer Overflow event
Input Capture
(1 and/or 2)
Output Compare
(1 and/or 2)
Mode
Wait
Halt
Modes
No effect on 16-bit timer.
Timer interrupts cause the device to exit from Wait mode.
16-bit timer registers are frozen.
In Halt mode, the counter stops counting until Halt mode is exited. Counting resumes from
the previous count when the MCU is woken up by an interrupt with “exit from Halt mode”
capability or from the counter reset value when the MCU is woken up by a RESET.
If an input capture event occurs on the ICAPi pin, the input capture detection circuitry is
armed. Consequently, when the MCU is woken up by an interrupt with “exit from Halt
mode” capability, the ICFi bit is set, and the counter value present when exiting from Halt
mode is captured into the ICiR register.
Effect of low power modes on 16-bit timer
16-bit timer interrupt control/wake-up capability
Timer modes
Interrupt event
49). These events generate an interrupt if the corresponding Enable
Capture 1
Input
Yes
Doc ID 13829 Rev 1
Capture 2
Input
Yes
Timer resources
Effect
Event
OCF1
OCF2
ICF1
ICF2
TOF
flag
Compare 1
Output
Yes
control
Enable
OCIE
TOIE
ICIE
bit
ST72321xx-Auto
from
Wait
Exit
Yes
Compare 2
Output
Chapter 7:
Yes
from
Halt
Exit
No
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