Z86D99 ZILOG [Zilog, Inc.], Z86D99 Datasheet - Page 72

• Manufacturer Part Number: Z86D99
• Description: Low-Voltage Micro controllers with ADC
• Manufacturer: ZILOG [Zilog, Inc.]

PS003807-1002
Bit
Bit/Field
R/W
Reset
R = Read, W = Write, X = Indeterminate
Bit
Position
76______
__5_____
___4____
____3___
_____2__
______1_
_______0
Interrupt Request Register
The IRQ, as described in Table 23, is a read/write register that stores the interrupt
requests for both vectored and polled interrupts. When an interrupt request is
made by any of the six interrupts, the corresponding bit in the IRQ is set to 1.
Table 23. IRQ (Group/Bank 0Fh, Register A)
7
Interrupt Edge
R/W
0
Bit/Field
Interrupt Edge
Trigger
Set IRQ
Set IRQ
Set IRQ
Set IRQ
Set IRQ
Set IRQ
P
5
4
3
2
1
0
6
R/W
0
R
E
L
5
Set
IRQ5
R/W
0
R/W
R/W
R
R
W
W
R
R
W
W
R
R
W
W
R
R
W
W
R
R
W
W
R
R
W
W
I
M
Z86D990/Z86D991 OTP and Z86L99X ROM
4
Set
IRQ4
R/W
0
Value
11
10
01
00
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
I
Low-Voltage Microcontrollers with ADC
N
A
3
Set
IRQ3
R/W
0
Description
P51 Rise/FallingP52 Rise/Falling
P51 Rising P52 Falling
P51 FallingP52 Rising
P51 FallingP52 Falling
IRQ
IRQ
Set IRQ
Reset IRQ
IRQ
IRQ
Set IRQ
Reset IRQ
IRQ
IRQ
Set IRQ
Reset IRQ
IRQ
IRQ
Set IRQ
Reset IRQ
IRQ
IRQ
Set IRQ
Reset IRQ
IRQ
IRQ
Set IRQ
Reset IRQ
R
5
5
4
4
3
3
2
2
1
1
0
0
Inactive
Active
Inactive
Active
Inactive
Active
Inactive
Active
Inactive
Active
Inactive
Active
Y
5
4
3
2
1
0
2
Set
IRQ2
R/W
0
5
4
3
2
1
0
1
Set
IRQ1
R/W
0
0
Set
IRQ0
R/W
0
65