ST72321J7-Auto STMicroelectronics, ST72321J7-Auto Datasheet - Page 94
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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PWM auto-reload timer (ART)
12.3.2
12.3.3
94/243
Table 46.
Counter access register (ARTCAR)
Table 47.
Auto-reload register (ARTARR)
Table 48.
This register has two PWM management functions:
ARTCAR
ARTARR
7:0
7:0
Bit
Bit
–
–
7
7
CA[7:0]
AR[7:0]
Name
Name
f
f
f
f
INPUT
f
f
INPUT
INPUT
INPUT
Adjusting the PWM frequency
Setting the PWM duty cycle resolution
COUNTER
INPUT
Prescaler selection for ART (continued)
ARTCAR register description
ARTAAR register description
/ 128
/ 16
/ 32
/ 64
/ 8
Counter Access Data
Counter Auto-Reload Data
6
6
These bits can be set and cleared either by hardware or by software. The
ARTCAR register is used to read or write the auto-reload counter “on the fly”
(while it is counting).
These bits are set and cleared by software. They are used to hold the auto-reload
value which is automatically loaded in the counter when an overflow occurs. At the
same time, the PWM output levels are changed according to the corresponding
OPx bit in the PWMCR register.
5
5
Doc ID 13829 Rev 1
With f
4
4
62.5 kHz
INPUT
500 kHz
250 kHz
125 kHz
1 MHz
CA[7:0]
AR[7:0]
RW
RW
= 8 MHz
Function
Function
3
3
2
2
CC2
Reset value: 0000 0000 (00h)
Reset value: 0000 0000 (00h)
0
1
1
1
1
1
1
ST72321xx-Auto
CC1
1
0
0
1
1
CC0
0
0
1
0
1
0
1
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