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参数资料
| 型号： | ST7PLITEUS5M6TR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO8 |
| 封装： | 0.150 INCH, LEAD FREE, PLASTIC, SOP-8 |
| 文件页数： | 59/108页 |
| 文件大小： | 1957K |
| 代理商： | ST7PLITEUS5M6TR |
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ST7LITEUSx
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12-BIT AUTORELOAD TIMER (Cont’d)
10.2.6 Register Description
TIMER CONTROL STATUS REGISTER (ATC-
SR)
Read / Write
Reset Value: 0000 0000 (00h)
Bits 7:5 = Reserved, must be kept cleared.
Bits 4:3 = CK[1:0] Counter Clock Selection.
These bits are set and cleared by software and
cleared by hardware after a reset. They select the
clock frequency of the counter.
Bit 2 = OVF Overflow Flag.
This bit is set by hardware and cleared by software
by reading the ATCSR register. It indicates the
transition of the counter from FFFh to ATR value.
0: No counter overflow occurred
1: Counter overflow occurred
Caution:
When set, the OVF bit stays high for 1 fCOUNTER
cycle (up to 1ms depending on the clock selection)
after it has been cleared by software.
Bit 1 = OVFIE Overflow Interrupt Enable.
This bit is read/write by software and cleared by
hardware after a reset.
0: OVF interrupt disabled
1: OVF interrupt enabled
Bit 0 = CMPIE Compare Interrupt Enable.
This bit is read/write by software and clear by
hardware after a reset. It allows to mask the inter-
rupt generation when CMPF bit is set.
0: CMPF interrupt disabled
1: CMPF interrupt enabled
COUNTER REGISTER HIGH (CNTRH)
Read only
Reset Value: 0000 0000 (00h)
COUNTER REGISTER LOW (CNTRL)
Read only
Reset Value: 0000 0000 (00h)
Bits 15:12 = Reserved, must be kept cleared.
Bits 11:0 = CNTR[11:0] Counter Value.
This 12-bit register is read by software and cleared
by hardware after a reset. The counter is incre-
mented continuously as soon as a counter clock is
selected. To obtain the 12-bit value, software
should read the counter value in two consecutive
read operations. As there is no latch, it is recom-
mended to read LSB first. In this case, CNTRH
can be incremented between the two read opera-
tions and to have an accurate result when
ftimer=fCPU, special care must be taken when CN-
TRL values close to FFh are read.
When a counter overflow occurs, the counter re-
starts from the value specified in the ATR register.
70
0
CK1
CK0
OVF
OVFIE CMPIE
Counter Clock Selection
CK1
CK0
OFF
0
fLTIMER (1 ms timebase @ 8 MHz)
0
1
fCPU
10
Reserved
1
15
8
0
CN11
CN10
CN9
CN8
70
CN7
CN6
CN5
CN4
CN3
CN2
CN1
CN0
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ST7PLITEUS5U3 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-bit MCU with single voltage Flash memory, ADC, timers |
| ST7PLITEUS5U3TR | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-bit MCU with single voltage Flash memory, ADC, timers |
| ST7PLITEUS5U6 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-bit MCU with single voltage Flash memory, ADC, timers |
| ST7PLITEUS5U6TR | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-bit MCU with single voltage Flash memory, ADC, timers |
| ST7PMC1K2B3 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-bit MCU with nested interrupts, Flash, 10-bit ADC, brushless motor control, five timers, SPI, LINSCI? |
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