Z87C33 Datasheet, PDF (45/72 Pages) Zilog, Inc. – CMOS Z8® MCU Consumer Controller Processor

Z87C33
CMOS Z8“ MCU Consumer Controller Processor
39
Bit
Position
D7–D6
Bit
Field
Interrupt
Edge
D5
IRQ5
D4
IRQ4
D3
IRQ3
D2
IRQ2
D1
IRQ1
D0
IRQ0
Reset
R/W State Description
R/W 00 Interrupt Edge
00: P31 ↓ P32 ↓
01: P31 ↓ P32 ↑
10: P31 ↑ P32 ↓
11: P31 ↑↓ P32 ↑↓
R/W
0 Interrupt
IRQ5 = T1
0: No Interrupt pending
1: Interrupt pending
R/W
0 Interrupt
IRQ4 = T0
0: No Interrupt pending
1: Interrupt pending
R/W
0 Interrupt
IRQ3 = P30 Input
0: No Interrupt pending
1: Interrupt pending
R/W
0 Interrupt
IRQ2 = P31 Input
0: No Interrupt pending
1: Interrupt pending
R/W
0 Interrupt
IRQ1 = P33 Input
0: No Interrupt pending
1: Interrupt pending
R/W
0 Interrupt
IRQ0 = P32 Input
0: No Interrupt pending
1: Interrupt pending
Interrupt Mask Register
The Interrupt Mask Register, IMR, controls interrupt functions. READ/WRITE and
reset states for bits D7–D0 are listed in Table 26.
Table 26. Interrupt Mask Register—IMR FBh/R251 Bank 0h: READ/WRITE
Bit
R/W
D7
D6 D5
D4
D3
D2
D1
D0
R/W R/W R/W R/W R/W R/W R/W R/W
PS015601-1003