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Chapter 12 Serial Interface 3
Operation
XII - 22
Pin Setup (2 channels, at transmission)
Table 12-3-8 shows the pins setup at synchronous serial interface transmission with 2 channels (SBO3 pin,
SBT3 pin). The SBI3 pin is not used, so that it can be used as a general port.
Table 12-3-8 Synchronous Serial Interface Pin Setup (2 channels, at transmission)
Data output pin Data input pin
Internal clock External clock
Pin P51 P50
Serial data output Input "1" Serial clock I/O Serial clock I/O
SC3MD1(SC3SBOS) SC3MD1(SC3SBIS)
Push-pull/ Push-pull/ Push-pull/
N-ch open-drain N-ch open-drain N-ch open-drain
SC3ODC(SC3ODC0)
Output mode Output mode Input mode
P5DIR(P5DIR1)
added/not added added/not added added/not added
P5PLU(P5PLU1)
SC3ODC(SC3ODC1)
P5DIR(P5DIR2)
P5PLU(P5PLU2)
SBO3 pin SBI3 pin
-
SC3MD1(SC3SBTS)
Pull-up
Clock I/O pin
SBT3 pin
P52
SBI3/SBO3 independent
SC3MD1(SC3IOM)
-
Item
-
SBI3/SBO3 pin
Function
Type
I/O -