Datasheet

78K0/Kx2-L CHAPTER 16 SERIAL INTERFACES CSI10 AND CSI11
R01UH0028EJ0400 Rev.4.00 590
Sep 27, 2010
(5) SO1n output (refer to Figures 16-1 to 16-3)
The status of the SO1n output is as follows depending on the setting of CSIE1n, TRMD1n, DAP1n, and DIR1n.
Table 16-3. SO1n Output Status
CSIE1n TRMD1n DAP1n DIR1n SO1n Output
Note 1
TRMD1n = 0
Note 2
− −
Low level output
Note 2
DAP1n = 0
−
Low level output
DIR1n = 0 Value of bit 7 of SOTB1n
CSIE1n = 0
Note 2
TRMD1n = 1
Note 3
DAP1n = 1
DIR1n = 1 Value of bit 0 of SOTB1n
TRMD1n = 0
− −
Low level output CSIE1n = 1
TRMD1n = 1
− −
Transmission data
Note 4
Notes 1. The actual output of the SO10 or SO11 pin is determined according to the port mode register and
the port register corresponding to SO10 or SO11, as well as the SO1n output.
2. This is a status after reset.
3. To use the SO11 pin as general-purpose port, set CSIC11 in the default status (00H).
4. After transmission has been completed, the SO1n pin holds the output value of the last bit of
transmission data.
Caution If a value is written to CSIE1n, TRMD1n, DAP1n, and DIR1n, the output value of SO1n
changes.
Remark 78K0/KA2-L (25, 32-pin products): n = 1
78K0/KB2-L: n = 0
78K0/KC2-L: n = 0, 1