Section 9 Timers
Rev. 7.00 Mar 10, 2005 page 249 of 652
REJ09B0042-0700
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.
Description
Bit 3
TMA3
Bit 2
TMA2
Bit 1
TMA1
Bit 0
TMA0
Prescaler and Divider Ratio
or Overflow Period Function
0000PSS, φ/8192 (initial value) Interval timer
1 PSS, φ/4096
1 0 PSS, φ/2048
1 PSS, φ/512
1 0 0 PSS, φ/256
1 PSS, φ/128
1 0 PSS, φ/32
1 PSS, φ/8
1000PSW, 1 s Clock time
1 PSW, 0.5 s base
1 0 PSW, 0.25 s (when using
1 PSW, 0.03125 s 32.768 kHz)
100PSW and TCA are reset
1
10
1
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