Renesas H8 Series Hardware Manual page 291

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 Bit 2 Bit 1
TMA3 TMA2 TMA1
0 0 0
1
1 0
1
1 0 0
1
1 0
1
Bit 0 Prescaler and Divider Ratio
TMA0 or Overflow Period
PSS, φ/8192
0
PSS, φ/4096
1
PSS, φ/2048
0
PSS, φ/512
1
PSS, φ/256
0
PSS, φ/128
1
PSS, φ/32
0
PSS, φ/8
1
0 PSW, 1 s
1 PSW, 0.5 s
0 PSW, 0.25 s
1 PSW, 0.03125 s
0 PSW and TCA are reset
1
0
1
Description
(initial value) Interval timer
Rev. 7.00 Mar 10, 2005 page 249 of 652
Section 9 Timers
Function
Clock time
base
(when using
32.768 kHz)
REJ09B0042-0700