
CHAPTER 4 PORT FUNCTIONS
User’s Manual U15905EJ2V1UD
143
4.3.8
Port CD
Port CD can be set to the input or output mode in 1-bit units.
The number of I/O port bits differs depending on the product.
Commercial Name
Number of I/O Port Bits
V850ES/SA2
V850ES/SA3
3-bit I/O port
(1) Functions of port CD (V850ES/SA3)
Input/output data can be specified in 1-bit units by using port register CD (PCD).
Can be set to the input or output mode in 1-bit units by using port mode register CD (PMCD).
Port CD has no alternate-function pins.
Table 4-12. Alternate-Function Pins of Port CD (V850ES/SA3)
Pin Name
Alternate-Function Pin
I/O
PULL
Note
Remark
PCD1
PCD2
Port CD
PCD3
I/O
None
Note
Software pull-up function