NEC Figure 8-11. Interval Timer Configuration Diagram, Figure 8-12. Interval Timer Operation Timings, Remark Interval time = (N + 1) t : N = 0001H to FFFFH.

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CHAPTER 8 16-BIT TIMER/EVENT COUNTER
16-Bit Capture/Compare Register 00 (CR00)
16-Bit Timer Register (TM0)
Selector
f XX /2
2
f XX /2
f
XX
2f XX
INTTM3
TI00/P00/INTP0
OVF0
Clear Circuit
INTTM00
Figure 8-11. Interval Timer Configuration Diagram
Figure 8-12. Interval Timer Operation Timings
t
Count Clock
TM0 Count Value
CR00
INTTM00
TO0
Interval Time Interval Time Interval Time
0000 0001 N 0000 0001 N 0000 0001 N
Count Start Clear Clear
NN NN
Interrupt Request Acknowledge Interrupt Request Acknowledge
Remark Interval time = (N + 1) × t : N = 0001H to FFFFH.