z86e54 ZiLOG Semiconductor, z86e54 Datasheet - Page 51

• Manufacturer Part Number: z86e54
• Description: Z8 512 Byte Otp Mcu
• Manufacturer: ZiLOG Semiconductor

PS020102-1003
Bit
Position
7
6
5-0
Note: *Must use EI/DI instruction to set/reset this bit.
Bit
Position
2
1
0
Table 26. Interrupt Mask Register, R251 IMR FBh Bank 0h: READ/WRITE
Bit
R/W
Reset
Note: R = Read, W = Write, X = Indeterminate
Bit
R/W
Reset
Note: R = Read, W = Write, X = Indeterminate
Table 27. Flag Register, R252 Flags FCh Bank 0h: READ/WRITE
Master
Interrupt
Enable
Reserved
IRQO-IRQ5
Bit Field
Bit Field
IRQ2
IRQ1
IRQO
R/W
R/W
7
0
7
0
R/W
R/W
X
X
6
6
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
X
X
5
5
Reset
Value
X
X
0
Reset
Value
R/W
R/W
0
0
0
X
X
4
4
Description
1: Enables global interrupts*
0: Disables global interrupts*
Reserved-must be 0
1: Enables IRQO-IRQ5 (DO = IRQO)
Description
Interrupt
IRQ2 = P31 Input
1: Interrupt pending
0: No interrupt pending
Interrupt
IRQ1 = P33 Input
1: Interrupt pending
0: No interrupt pending
Interrupt
IRQO = P32 Input (falling edge)
1: Interrupt pending
0: No interrupt pending
R/W
R/W
X
X
3
3
R/W
R/W
X
X
2
2
R/W
R/W
X
X
1
1
Z8
®
R/W
R/W
512 Byte OTP MCU
X
X
0
0
Z86E54
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