202
µ
PD78214 Sub-Series
Fig. 7-116 Setting of Control Registers for External Event Counter Operation
(a) Prescaler mode register 1 (PRM1)
(b) External interrupt mode register 0 (INTM0)
(c) Timer control register 1 (TMC1)
Fig. 7-117 Setting Procedure for External Event Counter Operation
76543210
111 0
PRM1 ×××
1
Specifies external clock input (C1)
7654321
0
0
INTM0 1××××××
Specifies valid edge of C1 input as rising edge
76543210
100 0
×0
0
TMC1 ×
Normal mode
Overflow flag
Enables counting
Event counter
Specify valid edge of C1 pin input
Set PRM1 register
Start counting ; Sets bit 7 of TMC1 to 1
PRM10F× H
CE21