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T80C5112-RKFEV 数据表(PDF) 54 Page - ATMEL Corporation |
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T80C5112-RKFEV 数据表(HTML) 54 Page - ATMEL Corporation |
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54 / 97 page ![]() 54 Rev. B - November 10, 2000 Preliminary T80C5112 Table 30. CCAPnH: PCA Modules Capture/Compare Registers High Table 31. CCAPnL: PCA Modules Capture/Compare Registers Low Table 32. CH: PCA Counter High Table 33. CL: PCA Counter Low 13.1. PCA Capture Mode To use one of the PCA modules in the capture mode either one or both of the CCAPM bits CAPN and CAPP for that module must be set. The external CEX input for the module (on port 1) is sampled for a transition. When a valid transition occurs the PCA hardware loads the value of the PCA counter registers (CH and CL) into the module's capture registers (CCAPnL and CCAPnH). If the CCFn bit for the module in the CCON SFR and the ECCFn bit in the CCAPMn SFR are set then an interrupt will be generated (Refer to Figure 24). CCAPnH Address n=0-4 CCAP0H=0FAH CCAP1H=0FBH CCAP2H=0FCH CCAP3H=0FDH CCAP4H=0FEH 7 6 5 4 3 2 1 0 Reset value 0 0 0 0 0 0 0 0 CCAPnL Address n=0-4 CCAP0L=0EAH CCAP1L=0EBH CCAP2L=0ECH CCAP3L=0EDH CCAP4L=0EEH 7 6 5 4 3 2 1 0 Reset value 0 0 0 0 0 0 0 0 CH Address 0F9H 7 6 5 4 3 2 1 0 Reset value 0 0 0 0 0 0 0 0 CL Address 0E9H 7 6 5 4 3 2 1 0 Reset value 0 0 0 0 0 0 0 0 |
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