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STM8AF/P6348 数据表(PDF) 21 Page - STMicroelectronics

部件名 STM8AF/P6348
功能描述  Automotive 8-bit MCU, with up to 32-Kbyte Flash memory, data EEPROM, 10-bit ADC, timers, LIN, SPI, I2C, 3 to 5.5 V
PDF  95 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STM8AF/P6348 数据表(HTML) 21 Page - STMicroelectronics

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DS12343 Rev 2
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STM8AF6366
Product overview
93
Independent watchdog timer
The independent watchdog peripheral can be used to resolve malfunctions due to hardware
or software failures.
It is clocked by the 128 kHz LSI internal RC clock source, and thus stays active even in case
of a CPU clock failure. If the hardware watchdog feature is enabled through the device
option bits, the watchdog is automatically enabled at power-on, and generates a reset
unless the key register is written by software before the counter reaches the end of count.
5.7.2
Auto-wakeup counter
This counter is used to cyclically wakeup the device in Active-halt mode. It can be clocked
by the internal 128 kHz internal low-frequency RC oscillator or external clock.
LSI clock can be internally connected to TIM3 input capture channel 1 for calibration.
5.7.3
Beeper
This function generates a rectangular signal in the range of 1, 2 or 4 kHz which can be
output on a pin. This is useful when audible sounds without interference need to be
generated for use in the application.
5.7.4
Advanced control and general purpose timers
STM8A devices described in this datasheet, contain up to three 16-bit advanced control and
general purpose timers providing nine CAPCOM channels in total. A CAPCOM channel can
be used either as input compare, output compare or PWM channel. These timers are
named TIM1, TIM2 and TIM3.
Table 3. Advanced control and general purpose timers
Timer
Counter
width
Counter
type
Prescaler
factor
Channels
Inverted
outputs
Repetition
counter
trigger
unit
External
trigger
Break
input
TIM1
16-bit
Up/down 1 to 65536
4
3
Yes
Yes
Yes
Yes
TIM2
16-bit
Up
2n
n = 0 to 15
3
None
No
No
No
No
TIM3
16-bit
Up
2n
n = 0 to 15
2
None
No
No
No
No



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