GMS81508B HYNIX [Hynix Semiconductor], GMS81508B Datasheet - Page 61

• Manufacturer Part Number: GMS81508B
• Description: HYUNDAI MICRO ELECTRONICS 8-BIT SINGLE-CHIP MICROCONTROLLERS
• Manufacturer: HYNIX [Hynix Semiconductor]

GMS81508B/16B/24B
.
58
Watchdog Timer
Communication
A/D Converter
Timer 0
Timer 1
Timer 2
Timer 3
INT1
INT2
INT3
INT0
Serial
BIT
IENH
IENL
MSB
MSB
INT0E
ADE
R/W
R/W
IRQH
[0F7
IRQL
[0F5
WDTE
H
R/W
INT1E
R/W
H
]
]
INT0IF
INT1IF
INT2IF
INT3IF
WDTIF
SIOIF
BITIF
ADIF
T0IF
T1IF
T2IF
T3IF
INT2E
BITE
R/W
R/W
Internal bus line
Figure 16-2 Block Diagram of Interrupt
INT3E
R/W
SIOE
R/W
[0F4
Figure 16-3 Interrupt Enable Flag
[0F6
H
]
R/W
T0E
H
IENH
]
-
-
IENL
Internal bus line
R/W
T1E
-
-
Interrupt Enable
Register (Higher byte)
R/W
Interrupt Enable
Register (Lower byte)
T2E
-
-
R/W
T3E
-
-
LSB
LSB
Timer/Counter 3 interrupt enable flag
Timer/Counter 2 interrupt enable flag
Timer/Counter 1 interrupt enable flag
Timer/Counter 0 interrupt enable flag
External interrupt 3 enable flag
External interrupt 2 enable flag
External interrupt 1 enable flag
External interrupt 0 enable flag
Serial Communication interrupt enable flag
Basic Interval Timer interrupt enable flag
Watchdog timer interrupt enable flag
A/D Converter interrupt enable flag
ADDRESS: 0F6
INITIAL VALUE: 0000 0000
ADDRESS: 0F4
INITIAL VALUE: 0000 ----
I-flag is in PSW, it is cleared by “DI”, set by
“EI” instruction. When it goes interrupt service,
I-flag is cleared by hardware, thus any other
interrupt are inhibited. When interrupt service is
completed by “RETI” instruction, I-flag is set to
“1” by hardware.
Interrupt Master
Enable Flag
I-flag
H
H
HYUNDAI MicroElectronics
Generator
Interrupt
Address
Vector
B
B
DEC. 1999 Ver 1.04
Release STOP
To CPU
VALUE
0: Disable
1: Enable