Fig. 11.6 Clearing Timing Of 16-Bit Free-Run Timer; Fig. 11.7 Count Timing Of 16-Bit Free-Run Timer - Fujitsu MB90420/5 (A) Series Hardware Manual

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MB90420/5 (A) SERIES F MC-16LX FAMILY 16-BIT MICROCONTROLLERS HARDWARE MANUAL
n Clearing timing of 16-bit free-run timer
The clear of counter is performed when matched with a reset, software or compare clear register. The
counter clear by a reset or a software is performed concurently with an occurrence of clearing. The counter
clear matched with a compare clear register is performed synchronously with count timing.
φ
Value of compare clear register
N
Compare match
Counter value N 0000

Fig. 11.6 Clearing Timing of 16-bit Free-run Timer

n Counting timing of 16-bit free-run timer
The 16-bit free-run timer is incremented by input clock (internal or external clock). It is incremented by rising
edge (↑) at selecting the external clock.
φ
External clock input
Counting clock
Value of counter
N + 1
N

Fig. 11.7 Count Timing of 16-bit Free-run Timer

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