H8S-2655 Datasheet, PDF (1028/1091 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcomputer

Appendix B Internal I/O Register
TCR1—Timer Control Register 1
H'FFE0
Bit
:
7
6
5
4
3
2
1
0
— CCLR1 CCLR0 CKEG1 CKEG0 TPSC2 TPSC1 TPSC0
Initial value :
0
0
0
0
0
0
0
0
Read/Write : —
R/W
R/W
R/W
R/W
R/W
R/W
R/W
TPU1
Time Prescaler
0 0 0 Internal clock: counts on φ/1
1 Internal clock: counts on φ/4
1 0 Internal clock: counts on φ/16
1 Internal clock: counts on φ/64
1 0 0 External clock: counts on TCLKA pin input
1 External clock: counts on TCLKB pin input
1 0 Internal clock: counts on φ/256
1 Counts on TCNT2 overflow/underflow
Note: This setting is ignored when channel 1 is in phase
counting mode.
Clock Edge
0 0 Count at rising edge
1 Count at falling edge
1 _* Count at both edges
Legend: *: Don’t care
Note: This setting is ignored when channel 1
is in phase counting mode.
Counter Clear
0 0 TCNT clearing disabled
1 TCNT cleared by TGRA compare match/input capture
1 0 TCNT cleared by TGRB compare match/input capture
1 _{TCNT cleared by counter clearing for another channel}
performing synchronous clearing/synchronous operation*
Note: * Synchronous operating setting is performed by setting
the SYNC bit in TSYR to 1.
Rev. 5.00 Sep 14, 2006 page 1000 of 1060
REJ09B0331-0500