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GMS81604 View Datasheet(PDF) - Hyundai Micro Electronics

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GMS81604 Datasheet PDF : 79 Pages
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LG Semicon
R6 and R6DD registers: R6 is an 8-bit port (address
CCH). Pins R64~R67 are individually configurable as
input and output through the R6DD register (address
CDH), but pins R60~R63 are input only.
Port Pin
R60
R61
R62
R63
R64
R65
R66
R67
Alternate Function
AN0 (ADC input 0)
AN1 (ADC input 1)
AN2 (ADC input 2)
AN3 (ADC input 3)
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.
On the initial RESET, R60 can not be used digital
input port, because this port is selected as an ana-
log input port by ADCM register. To use this port as
a digital I/O port, change the value of lower 4 bits of
ADCM (address 0E8H).
On the other hand, R6 port, all eight pins can not be
used as digital I/O port simultaneousely. At least
one pin is used as an analog input.
GMS81604/08
Port 6 Data Register
ADDRESS: CCH
RESET VALUE: Undefined
R6 R67 R66 R65 R64 R63 R62 R61 R60
Input/ Output data
Port 6 Direction Register
ADDRESS: CDH
RESET VALUE: 0000----
R6DD R67 R66 R65 R64 R63 R62 R61 R60
Fixed as Input.
Can not write.
Direction select
0: Input
1: Output
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