HD6433802H Datasheet, PDF (191/435 Pages) Hitachi Semiconductor – Single-Chip Microcomputer

2. Block diagram
Figure 9.1 shows a block diagram of timer A.
ø_W
1/4
PSW
ø _W/4
TMA
ø_W /128
ø/8192, ø/4096, ø/2048,
ø/512, ø/256, ø/128,
ø/32, ø/8
TCA
ø
PSS
IRRTA
Notation:
TMA:
TCA:
IRRTA:
PSW:
PSS:
Timer mode register A
Timer counter A
Timer A overflow interrupt request flag
Prescaler W
Prescaler S
Note: * Can be selected only when the prescaler W output (ø_W/128) is used as the TCA input clock.
Figure 9.1 Block Diagram of Timer A
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