ST72521R9-Auto STMicroelectronics, ST72521R9-Auto Datasheet - Page 99
ST72521R9-Auto
Manufacturer Part Number
ST72521R9-Auto
Description
8-bit MCU for automotive
Manufacturer
STMicroelectronics
Datasheet
1.ST72521R9-AUTO.pdf
(276 pages)
Specifications of ST72521R9-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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ST72521xx-Auto
12.3.5
12.3.6
Duty cycle registers (PWMDCRx)
Table 52.
A PWMDCRx register is associated with the OCRx register of each PWM channel to
determine the second edge location of the PWM signal (the first edge location is common to
all channels and given by the ARTARR register). These PWMDCR registers allow the duty
cycle to be set independently for each PWM channel.
Input capture control / status register (ARTICCSR)
Table 53.
PWMDCRx
ARTICCSR
7:0
7:6
5:4
3:2
1:0
Bit
Bit
7
7
CIE[2:1]
DC[7:0]
CS[2:1]
CF[2:1]
Reserved
Name
Name
-
-
PWMDCRx register description
ARTICCSR register description
Duty Cycle Data
Reserved, always read as 0.
Capture Sensitivity
Capture Interrupt Enable
Capture Flag
6
6
These bits are set and cleared by software.
These bits are set and cleared by software. They determine the trigger event
polarity on the corresponding input capture channel.
0: Falling edge triggers capture on channel x
1: Rising edge triggers capture on channel x
These bits are set and cleared by software. They enable or disable the Input
capture channel interrupts independently.
0: Input capture channel x interrupt disabled
1: Input capture channel x interrupt enabled
These bits are set by hardware and cleared by software reading the
corresponding ARTICRx register. Each CFx bit indicates that an input capture x
has occurred.
0: No input capture on channel x
1: An input capture has occurred on channel x.
5
5
Doc ID 17660 Rev 1
CS[2:1]
RW
4
4
DC[7:0]
RW
Function
Function
3
3
CIE[2:1]
RW
PWM auto-reload timer (ART)
2
2
Reset value: 0000 0000 (00h)
Reset value: 0000 0000 (00h)
1
1
CF[2:1]
RW
0
0
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