HD404818 Datasheet, PDF (50/100 Pages) Hitachi Semiconductor – 16-digit LCD driver

HD404818 Series
32.768-kHz
oscillator
1/4
1/2
(t_subcyc) _{Prescaler W}
f_SUB
(PSW)
2 f_SUB
1/2 t_subcyc
Selector
System
clock
ø _PER
Selector
Prescaler S (PSS)
Timer A interrupt
request flag
(IFTA)
Clock Timer
counter A
(TCA) ^Overflow
3
Timer mode
register A
(TMA)
Figure 25 Timer A Block Diagram
48