Z86E61 Zilog., Z86E61 Datasheet - Page 33

• Manufacturer Part Number: Z86E61
• Description: CMOS Z8 16K/32K EPROM MICROCONTROLLER
• Manufacturer: Zilog.

R251 IMR
R252 FLAGS
R250 IRQ
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
Figure 38. Interrupt Request Register
Figure 39. Interrupt Mask Register
Figure 40. Flag Register
(FA
(FB
(FC
H
H
H
: Read/Write)
: Read/Write)
: Read/Write)
1
1
1
User Flag F1
User Flag F2
Half Carry Flag
Decimal Adjust Flag
Overflow Flag
Sign Flag
Zero Flag
Carry Flag
IRQ0 = P32 Input (D0 = IRQ0)
IRQ1 = P33 Input
IRQ2 = P31 Input
IRQ3 = P30 Input, Serial Input
IRQ4 = T0
IRQ5 = T1
Reserved (Must be 0)
Enables IRQ5-IRQ0
(D
Enables RAM Protect
Enables Interrupts
0
= IRQ0)
Serial Output
P R E L I M I N A R Y
R254 SPH
R255 SPL
R253 RP
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
Figure 41. Register Pointer Register
Figure 42. Stack Pointer Register
Figure 43. Stack Pointer Register
(FD
(FE
(FF
H
H
H
: Read/Write)
: Read/Write)
: Read/Write)
Stack Pointer Upper
Byte (SP
Stack Pointer Lower
Byte (SP
0 Reserved (Must be 0)
r4
r5
r6
r7
Register Pointer
15
7
WITH
Z86E61/E63 Z8
- SP
- SP
0
16K/32K EPROM
8
)
)
®
MCU
33