HD404849 Datasheet, PDF (78/125 Pages) Hitachi Semiconductor – 4-Bit Single-Chip Microcomputer

HD404849 Series
Table 27 PWM Output Following Update of Timer Write Register
Mode
Free running
PWM Output
Timer Write Register is Updated during
High PWM Output
Timer write
register
updated to
value N
Interrupt
request
Timer Write Register is Updated during
Low PWM Output
Timer write
register
updated to
value N
Interrupt
request
Reload
T × (255 – N) T × (N + 1)
Timer write
register
updated to
value N
Interrupt
request
T × (N' + 1)
T × (255 – N) T × (N + 1)
Timer write
register
updated to
value N
Interrupt
request
T
T × (255 – N)
T
T
T × (255 – N)
T
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