GMS84512 Datasheet, PDF (27/123 Pages) Hynix Semiconductor – 8-BIT SINGLE CHIP MICROCOMPUTER

GMS 84512 / 84524
3.1.2 R1 PORT
You can use the R17 port as input mode only, but others as input or output mode.
0
1
2
R1
3
PORT ₄
5
6
7
Pin Name
R10
R11
R12
R13
R14
R15/ Cin1
R16/ Cin2
R17/ Cin0/ INT3
Selection Mode
Port Selection 2nd Function
R10 ( I/O )
R10 ( I/O )
R11 ( I/O )
R11 ( I/O )
R12 ( I/O )
R12 ( I/O )
R13 ( I/O )
R13 ( I/O )
R14 ( I/O )
R14 ( I/O )
R15 ( I/O )
Cin1 ( I )
R16 ( I/O )
Cin2 ( I )
R17 ( I )
Cin0/ INT3 ( I )
Type
IOA
IOA
IOA
IOA
IOA
IOC
IOC
IC
l Register Structure and Description
Register Name
R1 I/O Directin Register
R1 Port Data Register
A/D COMP. Input CH. Selection Register
Port Function Selection Register
Symbol R/W
R1DD W
R1 R/W
CIS
w
FUNC W
Address
00C3_H
00C2_H
00D7_H
00CA_H
Initial Value
0000 0000
Not initialized
---- --00
---0 0000
R1 PORT I/O DIRECTION REGISTER
R1DD
<00C3_H>
-
W
W
W
W
W
W
W
7
6
5
4
3
2
1
0
- R1DD6 R1DD5 R1DD4 R1DD3 R1DD2 R1DD1 R1DD0
Initial Value when Reset
[ -000 0000 ]
Not used
Assign the direction of R1 port
(R1DD0) is assigned to R10 port)
0 : Input
1 : Output
3-2