ST72321J7-Auto STMicroelectronics, ST72321J7-Auto Datasheet - Page 93
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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ST72321xx-Auto
12.3
12.3.1
ART registers
Control/status register (ARTCSR)
Table 45.
Table 46.
ARTCSR
6:4 CC[2:0]
Bit
7
3
2
1
0
EXCL
RW
7
Name
EXCL
FCRL
TCE
OVF
OIE
f
f
f
COUNTER
INPUT
INPUT
f
INPUT
ARTCSR register description
Prescaler selection for ART
External Clock
Counter Clock Control
Timer Counter Enable
Force Counter Re-Load
Overflow Interrupt Enable
Overflow Flag
/ 2
/ 4
This bit is set and cleared by software. It selects the input clock for the 7-bit
prescaler.
0: CPU clock
1: External clock
These bits are set and cleared by software. They determine the prescaler division
ratio from f
This bit is set and cleared by software. It puts the timer in the lowest power
consumption mode.
0: Counter stopped (prescaler and counter frozen)
1: Counter running
This bit is write-only and any attempt to read it will yield a logical zero. When set, it
causes the contents of ARTARR register to be loaded into the counter, and the
content of the prescaler register to be cleared in order to initialize the timer before
starting to count.
This bit is set and cleared by software. It allows to enable/disable the interrupt which
is generated when the OVF bit is set.
0: Overflow Interrupt disable
1: Overflow Interrupt enable
This bit is set by hardware and cleared by software reading the ARTCSR register. It
indicates the transition of the counter from FFh to the ARTARR value.
0: New transition not yet reached
1: Transition reached
6
CC[2:0]
INPUT
RW
5
Doc ID 13829 Rev 1
(see
With f
Table
4
INPUT
8 MHz
4 MHz
2 MHz
46).
= 8 MHz
Function
TCE
RW
3
PWM auto-reload timer (ART)
FCRL
RW
2
CC2
Reset value: 0000 0000 (00h)
0
0
0
OIE
RW
1
CC1
0
0
1
OVF
RW
CC0
0
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0
1
0
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