Renesas R8C/20 User Manual

R8C/20 Group, R8C/21 Group 14. Timers
Rev.2.00 Aug 27, 2008 Page 218 of 458
REJ09B0250-0200
Figure 14.80 TRDCR0 Register in Reset Synchronous PWM Mode
Timer RD Control Register 0
(3)
Symbol Address After Reset
TRDCR0
0140h 00h
Bit Symbol Bit Name Function RW
NOTES:
1.
2.
3.
RW
TCK1 RW
TCK0
RW
RW
RW
CCLR2
CCLR1 RW
Count source selection bit
b2 b1b0
0 0 0 : f1
0 0 1 : f2
0 1 0 : f4
0 1 1 : f8
1 0 0 : f32
1 0 1 : TRDCLK input
(1)
1 1 0 : fOCO40M
1 1 1 : Do not set
External clock edge selection
bit
(2)
b4 b3
0 0 : Count at the rising edge
0 1 : Count at the falling edge
1 0 : Count at both edges
1 1 : Do not set
b7 b6 b5 b4
001
b3 b2
CKEG0
b1 b0
TCK2
The TRDCR1 register is not used in reset synchronous PWM mode.
This bit is enabled w hen the TCK2 to TCK0 bits are set to “101b” (TRDCLK input) and the STCLK bit in the TRDFCR
register is set to 1 (external clock input enabled).
RW
CKEG1
CCLR0 RWSet to 001b (TRD0 register clear at the
compare match w ith TRDGRA0 register) in
reset synchronous PWM mode.
TRD0 counter clear selection bit
This bit is enabled w hen the STCLK bit in the TRDFCR register is set to 1 (external clock input enabled).

Renesas R8C/20 Specifications

General

Brand	Renesas
Model	R8C/20
Category	Control Unit
Language	English