HD64336901G Renesas Technology, HD64336901G Datasheet - Page 184

• Manufacturer Part Number: HD64336901G
• Description: (HD64xxx Series) 16-BIT MICROCONTROLLER
• Manufacturer: Renesas Technology

12.3.2
TCRW selects the timer counter clock source, selects a clearing condition, and specifies the timer
output levels.
Rev. 1.00, 11/03, page 156 of 376
Bit
7
6
5
4
3
2
1
Bit Name
CCLR
CKS2
CKS1
CKS0
TOD
TOC
TOB
Timer Control Register W (TCRW)
Initial
Value
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
Counter Clear
The TCNT value is cleared by compare match A when
this bit is 1. When it is 0, TCNT operates as a free-
running counter.
Clock Select 2 to 0
Select the TCNT clock source.
000: Internal clock: counts on
001: Internal clock: counts on /2
010: Internal clock: counts on /4
011: Internal clock: counts on /8
1XX: Counts on rising edges of the external event (FTCI)
When the internal clock source ( ) is selected, subclock
sources are counted in subactive and subsleep modes.
Timer Output Level Setting D
Sets the output value of the FTIOD pin until the first
compare match D is generated.
0: Output value is 0*
1: Output value is 1*
Timer Output Level Setting C
Sets the output value of the FTIOC pin until the first
compare match C is generated.
0: Output value is 0*
1: Output value is 1*
Timer Output Level Setting B
Sets the output value of the FTIOB pin until the first
compare match B is generated.
0: Output value is 0*
1: Output value is 1*