Z86L04 Datasheet, PDF (23/26 Pages) Zilog, Inc. – Z8 8-Bit Cost-Effective Microcontrollers

Zilog
R250 IRQ
D7 D6 D5 D4 D3 D2 D1 D0
IRQ0 = P32 Input ↓
IRQ1 = P33 Input ↓
IRQ2 = P31 Input ↓
IRQ3 = P32 Input ↑
IRQ4 = Reserved
IRQ5 = T1
Reserved (Must be 0.)
Figure 25. Interrupt Request Register
(FA_H: Read/Write)
R251 IMR
D7 D6 D5 D4 D3 D2 D1 D0
1 Enables IRQ5-IRQ0
(D ₀ = IRQ0)
Reserved (Must be 0.)
1 Enables Interrupts
Figure 26. Interrupt Mask Register (FB_H: Read/Write)
R252 Flags
D7 D6 D5 D4 D3 D2 D1 D0
User Flag F1
User Flag F2
Half Carry Flag
Decimal Adjust Flag
Overflow Flag
Sign Flag
Zero Flag
Carry Flag
Figure 27. Flag Register (FC_H: Read/Write)
Z86L04/L08
Z8 8-Bit Cost-Effective Microcontrollers
R253 RP
D7 D6 D5 D4 D3 D2 D1 D0
1
Reserved (Must be 0.)
Register Pointer
Figure 28. Register Pointer FD_H: Read/Write)
R255 SPL
D7 D6 D5 D4 D3 D2 D1 D0
Stack Pointer Lower
Byte (SP ₀ - SP ₇ )
Figure 29. Stack Pointer (FF_H: Read/Write)
DS97LVO0901
PRELIMINARY
23