R8C-28_1 Datasheet, PDF (161/471 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MCU R8C FAMILY / R8C/2x SERIES

R8C/28 Group, R8C/29 Group
14. Timers
Timer RA I/O Control Register
b7 b6 b5 b4 b3 b2 b1 b0
0
Symbol
Address
After Reset
TRAIOC
0101h
00h
Bit Symbol
Bit Name
Function
RW
TRAIO polarity sw itch bit 0 : Starts counting at rising edge of the TRAIO
TEDGSEL
input or TRAIO starts output at “L”.
1 : Starts counting at falling edge of the TRAIO
RW
input or TRAIO starts output at “H”.
TRAIO output control bit
Set to 0 in event counter mode.
TOPCR
RW
TRAO output enable bit
0 : Port P3_7
TOENA
1 : TRAO output
RW
_____
_____
TIOSEL ^{INT1/TRAIO select bit}
0 : INT1/TRAIO pin (P1_7)
_____
RW
1 : INT1/TRAIO pin (P1_5)
TIPF0
TRAIO input filter select
bits⁽¹⁾
b5 b4
0 0 : No filter
0 1 : Filter w ith f1 sampling
1 0 : Filter w ith f8 sampling
RW
TIPF1
1 1 : Filter w ith f32 sampling
—
Nothing is assigned. If necessary, set to 0.
(b7-b6) When read, the content is 0.
—
NOTE:
1. When the same value from the TRAIO pin is sampled three times continuously, the input is determined.
Figure 14.7 TRAIOC Register in Event Counter Mode
Rev.2.10 Sep 26, 2008 Page 144 of 441
REJ09B0279-0210