gc80c520a CORERIVER Semiconductor, gc80c520a Datasheet - Page 185

• Manufacturer Part Number: gc80c520a
• Description: Midas1.0 Family Mask Rom/eprom/romless 8-bit Turbo Microcontrollers
• Manufacturer: CORERIVER Semiconductor

15.45 Port 3 Pull-up Control Register (P3SEL)
This register enables/disables the internal pull-up resistors in Port 3.
0: The internal pull-up resistors in Port 3 are ON.
1: The internal pull-up resistors in Port 3 are OFF.
15.46 External Interrupt Enable Register (EIE)
Bit No.
Bit No.
E7h
E8h
Symbol
EWDT
EX5
EX4
EX3
EX2
-
MiDAS1.0 Family
P3SEL.7
R/W(0)
7
7
-
-
Function
Reserved.
Watchdog timer interrupt Enable. This bit enables/disables the watchdog timer interrupt.
0: Disable the watchdog timer interrupt.
1: Enable the interrupt requests generated by the watchdog timer.
External Interrupt 5 Enable. This bit enables/disables external interrupt 5.
0: Disable external interrupt 5.
1: Enable the interrupt requests generated by the /INT5 pin.
External Interrupt 4 Enable. This bit enables/disables external interrupt 4.
0: Disable external interrupt 4.
1: Enable the interrupt requests generated by the INT4 pin.
External Interrupt 3 Enable. This bit enables/disables external interrupt 3.
0: Disable external interrupt 3.
1: Enable the interrupt requests generated by the /INT3 pin.
External Interrupt 2 Enable. This bit enables/disables external interrupt 2.
0: Disable external interrupt 2.
1: Enable the interrupt requests generated by the INT2 pin.
P3SEL.6
R/W(0)
6
6
-
-
P3SEL.5
R/W(0)
5
5
-
-
P3SEL.4
R/W(0)
R/W(0)
EWDT
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4
4
P3SEL.3
R/W(0)
R/W(0)
EX5
3
3
P3SEL.2
R/W(0)
R/W(0)
2
EX4
2
P3SEL.1
R/W(0)
R/W(0)
1
EX3
1
P3SEL.0
R/W(0)
R/W(0)
0
EX2
0
P3SEL
EIE