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12.2
Register Descriptions
12.2.1
Timer Output Control Register (TOCR)
TOCR is an 8-bit readable/writable register that specifies whether external pin TCLK is used as
the external clock or input capture control input pin, or as the on-chip RTC output clock output
pin.
TOCR is initialized to H'00 by a power-on or manual reset, but is not initialized in standby mode.
Bit:
Initial value:
R/W:
Bits 7 to 1—Reserved: These bits are always read as 0. A write to these bits is invalid, but the
write value should always be 0.
Bit 0—Timer Clock Pin Control (TCOE): Specifies whether timer clock pin TCLK is used as
the external clock or input capture control input pin, or as the on-chip RTC output clock output
pin.
Bit 0: TCOE
0
1
Rev. 4.0, 04/00, page 244 of 850
7
6
—
—
0
0
R
R
Description
Timer clock pin (TCLK) is used as external clock input or input capture
control input pin
Timer clock pin (TCLK) is used as on-chip RTC output clock output pin
5
4
—
—
0
0
R
R
3
2
—
—
0
0
R
R
1
0
—
TCOE
0
0
R
R/W
(Initial value)
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