h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 1060

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Appendix B Internal I/O Register
TCR1—Timer Control Register 1
Rev. 5.00 Sep 22, 2005 page 1034 of 1136
REJ09B0257-0500
Note: Bit 7 is reserved in channel 1.
Bit
Initial value
Read/Write
It is always read as 0 and cannot be modified.
Counter Clear
Note: * Synchronous operation setting is performed by setting the
0
1
0
1
0
1
—
—
7
0
TCNT clearing disabled
TCNT cleared by TGRA compare match/input capture
TCNT cleared by TGRB compare match/input capture
TCNT cleared by counter clearing for another channel
performing synchronous clearing/synchronous operation *
SYNC bit in TSYR to 1.
CCLR1
R/W
6
0
Note: Internal clock edge selection is valid when the input
Clock Edge
0
1
—
0
1
CCLR0
clock is /4 or slower. This setting is ignored if the
input clock is /1, or when overflow/underflow of
another channel is selected.
R/W
Count at rising edge
Count at falling edge
Count at both edges
5
0
Note: This setting is ignored when channel 1 is in phase
Time Prescaler
0
1
CKEG1
0
1
0
1
R/W
counting mode.
4
0
0
1
0
1
0
1
0
1
Internal clock: counts on /1
Internal clock: counts on /4
Internal clock: counts on /16
Internal clock: counts on /64
External clock: counts on TCLKA pin input
External clock: counts on TCLKB pin input
Internal clock: counts on /256
Counts on TCNT2 overflow/underflow
CKEG0
H'FF20
R/W
3
0
TPSC2
R/W
2
0
TPSC1
R/W
1
0
TPSC0
R/W
0
0
TPU1