GMS81504 Datasheet, PDF (24/54 Pages) List of Unclassifed Manufacturers – CMOS SINGLE-CHIP 8-BIT MICROCONTROLLER

GMS81504
R6 and R6DD registers: R6 is a 4-bit port (address
CCH). Pins R64~R67 are individually configurable as
input and output through the R6DD register (address
CDH).
Port Pin
R64
R65
R66
R67
Alternate Function
AN4 (ADC input 4)
AN5 (ADC input 5)
AN6 (ADC input 6)
AN7 (ADC input 7)
R6DD (address CDH) controls the direction of the R6
pins, even when they are being used as analog inputs.
The user must make sure to keep the pins configured
as inputs when using them as analog inputs.
HYUNDAI MicroElectronics
Port 6 Data Register
ADDRESS: CCH
RESET VALUE: Undefined
R6 R67 R66 R65 R64 - - - -
Input/ Output data
Port 6 Direction Register
ADDRESS: CDH
RESET VALUE: 0000----
R6DD R67 R66 R65 R64 - - - -
Direction select
0: Input
1: Output
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