NEC 78K0S/KA1+ Preliminary User's Manual page 94

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Figure 6-14. Control Register Settings in External Event Counter Mode (with Rising Edge Specified)
7
TMC00 0
7
CRC00 0
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ES110
PRM00 0/1
Remark 0/1: Setting 0 or 1 allows another function to be used simultaneously with the external event counter.
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CHAPTER 6 16-BIT TIMER/EVENT COUNTER 00
(a) 16-bit timer mode control register 00 (TMC00)
6 5 4 TMC003 TMC002
0 0 0 1 1
(b) Capture/compare control register 00 (CRC00)
6 5 4 3 CRC002
0 0 0 0 0/1
(c) Prescaler mode register 00 (PRM00)
ES100 ES010 ES000 3 2
0/1 0 1 0 0
See the description of the respective control registers for details.
Preliminary User's Manual U16898EJ1V0UD
TMC001 OVF00
0/1 0
Clears and starts on match between TM00 and CR000.
CRC001 CRC000
0/1 0
CR000 used as compare register
PRM001 PRM000
1 1
Selects external clock.
Specifies rising edge for pulse width detection.
Setting invalid (setting "10" is prohibited.)