SN8P1602B
8-Bit Micro-Controller
INTERRUPT OPERATION DESCRIPTION
GIE GLOBAL INTERRUPT OPERATION
GIE is the global interrupt control bit. All interrupts start work after the GIE = 1. It is necessary for interrupt service
request. One of the interrupt requests occurs, and the program counter (PC) points to the interrupt vector (ORG 8) and
the stack add 1 level.
ꢀ
SN8P1602B
0DFH
STKP
Bit 7
GIE
R/W
0
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
STKPB2
R/W
Bit 1
STKPB1
R/W
Bit 0
STKPB0
R/W
-
-
-
-
-
-
-
-
-
-
-
-
Read/Write
After reset
1
1
1
GIE: Global interrupt control bit. 0 = disable, 1 = enable.
ꢁ
Example: Set global interrupt control bit (GIE).
B0BSET FGIE
; Enable GIE
ꢀ
Note: The GIE bit must enable during all interrupt operation.
SONiX TECHNOLOGY CO., LTD
Page 56
Version 1.1