MB95710M Series
MB95770M Series
Document Number: 002-09307 Rev. *D
Page 114 of 172
• Block diagram of PC0/SEG02, PC1/SEG03, PC2/SEG04 and PC3/SEG05
19.8.3 Port C registers
• Port C register functions
• Correspondence between registers and pins for port C
Register
abbreviation
Data
Read
Read by read-modify-write
(RMW) instruction
Write
PDRC
0
Pin state is “L” level.
PDRC value is “0”.
As output port, outputs “L” level.
1
Pin state is “H” level.
PDRC value is “1”.
As output port, outputs “H” level.
DDRC
0
Port input enabled
1
Port output enabled
Correspondence between related register bits and pins
Pin name
-
-
-
-
PC3
PC2
PC1
PC0
PDRC
-
-
-
-
bit3
bit2
bit1
bit0
DDRC
PDRC
Pin
PDRC read
PDRC write
Executing bit manipulation instruction
DDRC read
DDRC write
DDRC
0
1
Stop mode, watch mode (SPL = 1)
LCD output
Inter
nal b
u
s
LCD output enable