NEC Figure 8-30. Square-Wave Output Operation Timing, Table 8-7. 16-Bit Timer/Event Count Square-Wave Output Ranges

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CHAPTER 8 16-BIT TIMER/EVENT COUNTER
Count Clock
TM0 Count Value
CR00
INTTM00
TO0 Pin Output
0000 0001 0002 N-1 N 0000 0001 0002 N-1 N 0000
N
Figure 8-30. Square-Wave Output Operation Timing
Table 8-7. 16-Bit Timer/Event Count Square-Wave Output Ranges
Minimum Pulse Width Maximum Pulse Width Resolution
MCS = 1 MCS = 0 MCS = 1 MCS = 0 MCS = 1 MCS = 0
2 × TI00 input cycle 216 × TI00 input cycle TI00 input edge cycle
2 × 1/fX216 × 1/fX1/fX
(400 ns) (13.1 ms) (200 ns)
2 × 1/fX22 × 1/fX216 × 1/fX217 × 1/fX1/fX2 × 1/fX
(400 ns) (800 ns) (13.1 ms) (26.2 ms) (200 ns) (400 ns)
22 × 1/fX23 × 1/fX217 × 1/fX218 × 1/fX2 × 1/fX22 × 1/fX
(800 ns) (1.6 µ s) (26.2 ms) (52.4 ms) (400 ns) (800 ns)
23 × 1/fX24 × 1/fX218 × 1/fX219 × 1/fX22 × 1/fX23 × 1/fX
(1.6 µ s) (3.2 µ s) (52.4 ms) (104.9 ms) (800 ns) (1.6 µ s)
2 × watch timer output cycle 216 × watch timer output cycle Watch timer output edge cycle
Remarks 1. fX: Main system clock oscillation frequency
2. MCS : Bit 0 of oscillation mode selection register (OSMS)
3. Values in parentheses when operated at fX = 5.0 MHz
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