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ST7MC1K2-Auto 数据表(PDF) 100 Page - STMicroelectronics

部件名 ST7MC1K2-Auto
功能描述  Clock, reset and supply management
PDF  371 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

ST7MC1K2-Auto 数据表(HTML) 100 Page - STMicroelectronics

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Obsolete
Product(s)
- Obsolete
Product(s)
On-chip peripherals
ST7MC1K2-Auto, ST7MC1K6-Auto, ST7MC2S4-Auto, ST7MC2S6-Auto
100/371
ART counter access register (ARTCAR)
Auto-reload register (ARTARR)
PWM control register (PWMCR)
ARTCAR
Reset value: 0000 0000 (00h)
7
654
32
10
CA[7:0]
R/W
Table 39.
ARTCAR register description
Bit
Name
Function
7:0 CA[7:0]
Counter access data
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).
ARTARR
Reset value: 0000 0000 (00h)
7
654
32
10
AR[7:0]
R/W
Table 40.
ARTARR register description
Bit
Name
Function
7:0 AR[7:0]
Counter auto-reload data
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.
This register has two PWM management functions:
Adjusting the PWM frequency
Setting the PWM duty cycle resolution
See below for PWM frequency versus resolution:
fPWM min/max (~0.244 kHz/31.25 kHz) = resolution (8-bit): ARTARR value 0
fPWM min/max (~0.244 kHz/62.5 kHz) = resolution (> 7-bit): ARTARR value 0..127
fPWM min/max (~0.488 kHz/125 kHz) = resolution (> 6-bit): ARTARR value 128..191
fPWM min/max (~0.977 kHz/250 kHz) = resolution (> 5-bit): ARTARR value 192..223
fPWM min/max (~1.953 kHz/500 kHz) = resolution (> 4-bit): ARTARR value 224..239
PWMCR
Reset value: 0000 0000 (00h)
7
654
32
10
OE[3:0]
OP[3:0]
R/W
R/W
Obsolete
Product(s)
- Obsolete
Product(s)



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