r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 822

• Manufacturer Part Number: r4f2456
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 13 8-Bit Timers (TMR)
13.3.5
TCCR selects the TCNT internal clock source and controls the external reset input.
Table 13.2 Reset Input to TCNT and Clearing Condition
Rev. 1.00 Sep. 19, 2008 Page 792 of 1342
REJ09B0467-0100
Bit
7 to 4
3
2
1
0
Bit 1
CCLR1
0
0
1
1
0
0
1
1
Bit Name
—
TMRIS
—
ICKS1
ICKS0
TCR
Timer Counter Control Register (TCCR)
Bit 0
CCLR0
0
1
0
1
0
1
0
1
Initial Value
All 0
0
0
0
0
TCCR
Bit 3
TMRIS
0
0
0
0
1
1
1
1
Description
Clearing is disabled
Clear by compare match A
Clear by compare match B
Clear by rising edge of external reset input
Clear by both rising and falling edges of external reset input
Clear by falling edge of external reset input
Clear by low level of external reset input
Clear by high level of external reset input
R/W
R
R/W
R
R/W
R/W
Description
Reserved
These bits are always read as 0 and cannot be
modified.
Timer Reset Input Select
Selects the external reset input, in combination
with the CCLR1 and CCLR0 bits in TCR. See
table 13.2.
Reserved
This bit is always read as 0 and cannot be
modified.
Internal Clock Select 1, 0
These bits select the internal clock source, in
combination with the CKS2 to CKS0 bits in TCR.
See table 13.3.