gc80c590ae CORERIVER Semiconductor, gc80c590ae Datasheet - Page 31

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

P3 (B0h) : PORT 3 Register
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 : PORT3[7:0]
P3.7
An 8-bit 5V tolerant input quasi-bidirectional port (Intel 8052 compatible).
Read-Modify-Write instructions do not read port pin but read SFR register.
The available alternative input function when the corresponding SFR bit is “1”.
PORT 3 Description
ANL
P3.0 = RXD
P3.6
/
OPL
P3.5
/
/
P3.1 = TXD
XRL
Semiconductor Co., Ltd.
P3.4
/
JBC
P3.3
/
P3.2 = INT0
/
CPL
P3.2
/
INC
P3.1
/
P3.3 = INT1
/
P3.0
DEC
/
DJNZ
/
P3.4 = T0
CPU BUS
Alternative Function Output
/
MOV PX.Y, C
/
P3.5 = T1
P3.0
SFR
Digital Input
QB
Q
/
/
P3.6 = WR
CLR PX.Y
2 OSC
Pulse
MiDAS2.0 Family
/
P3.7 = RD
/
SETB PX.Y
Pull-
up
[31]
P3.0