hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 291

• Manufacturer Part Number: hd64338023s
• Description: Renesas 8-bit Single-chip Microcomputer Super Low Power Series
• Manufacturer: Renesas Electronics Corporation.

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