NEC PD78076 User Manual page 207

Figure 8-21. Timing of Pulse Width Measurement Operation with
t
Count Clock
TM0 Count Value
0000 0001
TI00 Pin Input
CR01 Captured Value
INTP0
TI01 Pin Input
CR00 Captured Value
INTP1
OVF0
CHAPTER 8 16-BIT TIMER/EVENT COUNTER
Free-Running Counter (with Both Edges Specified)
D0 D1
D0 D1
D1
(D1 – D0) x t (10000H – D1 + D2) x t
FFFF 0000
(D3 – D2) x t
(10000H – D1 + (D2 + 1)) x t
D2 D3
D2 D3
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