Rev. 1.0, 09/02, page 408 of 568
Bit
Bit Name
Initial Value
R/W
Description
6 BIDE
0
R/W Bidirectional
Mode
Enable
Selects that both serial data input pin and output
pin are used or one of them is used. However,
transmission and reception are not performed
simultaneously when bidirectional mode is
selected. For details, section 16.5.3, Relationship
between Data I/O Pins and Shift Register.
0: Standard mode (two pins are used as data
input and output)
1: Bidirectional mode (one pin is used for data
input and output)
5
0
Reserved
The write value should always be 0.
4
SOL
0
R/W
Serial Data Output Value Selection
The output level of serial data, which retains that
of the last bit, can be modified by operating this bit
before or after transmission. When modifying the
output level, use the MOV instruction after
clearing the SOLP bit to 0. Since writing to this bit
during data transmission causes malfunctions, this
bit should not be modified.
0: Serial data output is modified to low level.
1: Serial data output is modified to high level.
3
SOLP
0
R
SOL Bit Write Protect
When modifying the output level of serial data,
use the MOV instruction after setting SOL to 1 and
clearing SOLP to 0, or by clearing SOL and SOLP
to 0.
0: Output level can be modified by the SOL value
1: This bit is always read as 1 and cannot be
modified.
2 SCKS
0
R/W SSCK
Pin
Selection
Selects that the SSCK pin functions as a port or a
serial clock pin. When MSS
=
1, this bit must be
set to 1.
0: Functions as an I/O port.
1: Functions as a serial clock.
Содержание H8S/2627
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