HD6433802H Datasheet, PDF (193/435 Pages) Hitachi Semiconductor – Single-Chip Microcomputer

Bits 3 to 0: Internal clock select (TMA3 to TMA0)
Bits 3 to 0 select the clock input to TCA. The selection is made as follows.
Bit 3
TMA3
0
1
Bit 2
TMA2
0
1
0
1
Bit 1
TMA1
0
1
0
1
0
1
0
1
Bit 0
TMA0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Description
Prescaler and Divider Ratio
or Overflow Period
Function
PSS, ø/8192
(initial value) Interval timer
PSS, ø/4096
PSS, ø/2048
PSS, ø/512
PSS, ø/256
PSS, ø/128
PSS, ø/32
PSS, ø/8
PSW, 1 s
Clock time
PSW, 0.5 s
base
PSW, 0.25 s
(when using
PSW, 0.03125 s
32.768 kHz)
PSW and TCA are reset
175