
HYUNDAI MicroElectronics
6
Classification No. Symbol I/O Description
49
:
56
R00
:
R07
I/O
R0 Port
( Can be determined I/O by R0DD )
In MP mode, This port functions as 8-bit data bus for
the CPU. (D0~D7)
41
:
48
R10
:
R17
I/O
R1 Port
( Can be determined I/O by R1DD )
In MP mode, This functions as 8-bit lower address
output pins. (A0~A7)
33
:
40
R20
:
R27
I/O
R2 Port
( Can be determined I/O by R2DD )
In MP mode, This functions as 8-bit higher address
output pins.(A8~A15)
I/O Port 57
:
64
R30
:
R37
I/O
R3 Port
( Can be determined I/O by R3DD )
In MP mode, This port functions as 8-bit control bus
for the CPU.
28
:
21
R40
:
R47
I/O
R4 Port
( Can be determined I/O by R4DD )
20
:
13
R50
:
R57
I/O
R5 Port
( Can be determined I/O by R5DD )
12
:
9
R60
:
R63
I
R6 Port
Input Only
8
:
5
R64
:
R65
I/O R6 Port
( Can be determined I/O by R6DD )