C&T Solution CT-MCL01 Series - Page 70

CT-MCL01 l User’s Manual
70
Registers Description
GPIO Input / Output Select:
Location: Address ECh
Attribute: Read/Write
Reset by: GP3X_MRST
Default: FFh
Size: 8 bits
GPIO Output Data Select:
Location: Address EDh
Attribute: Read/Write
Reset by: GP3X_MRST
Default: 00h
Size: 8 bits
Note.
Bit X = 0 outputs low when in output mode
Bit X = 1 outputs high when in output mode
Appendix – WDT & GPIO
BIT
READ/WRIT
Description
7-0 R/W
GPIO3 I/O register
0: The respective GPIO3 PIN is programmed as an output port
1: The respective GPIO3 PIN is programmed as an input port.
BIT
READ/WRIT
Description
7-0
R/W
GPIO3 Data register
For output ports, the respective bits can be read/written and
produced to pins.
Read Only
For input ports, the respective bits can be read only from pins.
Write accesses will be ignored.