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ST7MC1K2-Auto 数据表(PDF) 122 Page - STMicroelectronics |
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ST7MC1K2-Auto 数据表(HTML) 122 Page - STMicroelectronics |
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122 / 371 page  Obsolete Product(s) - Obsolete Product(s) On-chip peripherals ST7MC1K2-Auto, ST7MC1K6-Auto, ST7MC2S4-Auto, ST7MC2S6-Auto 122/371 Control/status register (CSR) The 3 least significant bits are not used. 1IEDG2 Input edge 2 This bit determines which type of level transition on the ICAP2 pin triggers the capture. 0: A falling edge triggers the capture 1: A rising edge triggers the capture 0 EXEDG External clock edge This bit determines which type of level transition on the external clock pin EXTCLK triggers the counter register. 0: A falling edge triggers the counter register 1: A rising edge triggers the counter register CSR Reset value: 0000 0000 (00h) 7 654 32 10 ICF1 OCF1 TOF ICF2 OCF2 TIMD Reserved RO RO RO RO RO RO - Table 52. CSR register description Bit Name Function 7 ICF1 Input capture flag 1 0: No input capture (reset value) 1: An input capture has occurred on the ICAP1 pin or the counter has reached the OC2R value in PWM mode. To clear this bit, first read the SR register, then read or write the low byte of the IC1R (IC1LR) register. 6OCF1 Output compare flag 1 0: No match (reset value) 1: The content of the free running counter has matched the content of the OC1R register. To clear this bit, first read the SR register, then read or write the low byte of the OC1R (OC1LR) register. 5TOF Timer overflow flag 0: No timer overflow (reset value) 1: The free running counter rolled over from FFFFh to 0000h. To clear this bit, first read the SR register, then read or write the low byte of the CR (CLR) register. Note: reading or writing the ACLR register does not clear TOF. 4ICF2 Input capture flag 2 0: No input capture (reset value) 1: An input capture has occurred on the ICAP2 pin. To clear this bit, first read the SR register, then read or write the low byte of the IC2R (IC2LR) register. Table 51. CR2 register description (continued) Bit Name Function Obsolete Product(s) - Obsolete Product(s) |
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