h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 377
h8s-2138
Manufacturer Part Number
h8s-2138
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2138.pdf
(1061 pages)
- Current page: 377 of 1061
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12.2.12 Timer Input Select Register (TISR) [TMRY Additional Function]
TISR is an 8-bit readable/writable register that selects the external clock/reset signal source for the
counter.
TISR is initialized to H'FE by a reset and in hardware standby mode.
Bits 7 to 1—Reserved: Do not write 0 to these bits.
Bit 0—Input Select (IS): Selects the internal synchronization signal (IVG signal) or the timer
clock/reset input pin (VSYNCI/TMIY (TMCIY/TMRIY)) as the external clock/reset signal source
for the counter.
Bit 0
IS
0
1
Bit
Initial value
Read/Write
Description
IVG signal is selected (H8S/2138 Group)
External clock/reset input is disabled (H8S/2134 Group)
VSYNCI/TMIY (TMCIY/TMRIY) is selected
—
—
7
1
—
—
6
1
—
—
5
1
—
—
4
1
Rev. 4.00 Jun 06, 2006 page 323 of 1004
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—
3
1
—
—
2
1
Section 12 8-Bit Timers
—
—
REJ09B0301-0400
1
1
(Initial value)
R/W
IS
0
0
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