gc80c590ae CORERIVER Semiconductor, gc80c590ae Datasheet - Page 32

• Manufacturer Part Number: gc80c590ae
• Description: Flash / Isp / Iap 8-bit Turbo Microcontrollers
• Manufacturer: CORERIVER Semiconductor

ADCHEN (ECh) : ADC Input Channel Enable
ADCHEN.7 ADCHEN.6 ADCHEN.5 ADCHEN.4 ADCHEN.3 ADCHEN.2 ADCHEN.1 ADCHEN.0
P4 (C0h) : PORT 4 Register
R/W(0) R/W(0) R/W(0) R/W(0) R/W(0) R/W(0) R/W(0) R/W(0)
R/W(1) R/W(1) R/W(1) R/W(1) R/W(1) R/W(1) R/W(1) R/W(1)
6.5. I/O Ports : PORT4[7:0]
P4.7
An 8-bit 3.3V operation quasi-bidirectional port (Intel 8052 compatible).
Used as ADC input channel or Digital Input/Output.
Read-Modify-Write instructions do not read port pin but read SFR register.
Available alternative input functions when the corresponding SFR bit is “1” (ADC input pins).
PORT 4 Description
ADCHEN.X
ANL
ADC0(P4.0), ADC1(P4.1), ADC2(P4.2), ADC3(P4.3), ADC4(P4.4), ADC5(P4.5), ADC6(P4.6), ADC7(P4.7)
For each ADC input channel, the corresponding channel enable bit (ADCHEN.n) must be set to "1".
P4.6
/
OPL
: ADC Input Channel Enable
0 = ADC input disable / Pull-up Resistor ON (Default)
1 = ADC input enable / Pull-up Resistor OFF
P4.5
/
XRL
Semiconductor Co., Ltd.
P4.4
/
JBC
P4.3
/
CPL
P4.2
/
INC
P4.1
/
P4.0
DEC
/
DJNZ
CPU BUS
Alternative Function Output
/
MOV PX.Y, C
ADC Block Input
P4.0
SFR
Digital Input
QB
Q
/
CLR PX.Y
2 OSC
Pulse
MiDAS2.0 Family
ADCHEN.0
/
SETB PX.Y
Pull-
up
ADCHEN.0
[32]
P4.0