Z86318 Datasheet, PDF (23/26 Pages) Zilog, Inc. – Z8 MCU 8-BIT MICROCONTROLLER

Z86318
Z8^® MCU 8-Bit Microcontroller
R248 P01M
D7 D6 D5 D4 D3 D2 D1 D0
P00-P03 Mode
00 Output
01 Input
Reserved (Must be 0)
Reserved (Must be 0)
Figure 26. Port 0 and 1 Mode Register
(F8_H: Write Only)
R251 IMR
D7 D6 D5 D4 D3 D2 D1 D0
1
1 Enables IRQ5-IRQ0
(D0 = IRQ0)
Reserved (Must be 0)
1=Global Interrupt Enable
0=Global Interrupt Disable
Figure 29. Interrupt Mask Register (FB_H: Read/Write)
R249 IPR
D7 D6 D5 D4 D3 D2 D1 D0
Reserved
(Must be 0.)
0000 Reserved
0001 IRQ1>4>5>2
0010 Reserved
0011 IRQ4>1>5>2
0100 IRQ5>2>1>4
0101 IRQ5>1>4>2
0110 IRQ5>2>4>1
0111 IRQ5>4>1>2
1000 IRQ2>1>4>5
1001 IRQ1>4>2>5
1010 IRQ2>4>1>5
1011 IRQ4>1>2>5
1100 IRQ2>5>1>4
1101 Reserved
1110 IRQ2>5>4>1
1111 Reserved
Figure 27. Interrupt Priority Register (F9_H: Write Only)
R250 IRQ
D7 D6 D5 D4 D3 D2 D1 D0
Reserved (Must be 0)
IRQ1 = P33 Input
IRQ2 = P31 Input
Reserved (Must be 0)
IRQ4 = T0
IRQ5 = T1
Reserved (Must be 0)
Figure 28. Interrupt Request Register
(FA_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 30. Flag Register (FC_H: Read/Write)
R253 RP
D7 D6 D5 D4 D3 D2 D1 D0
Reserved (Must be 0)
Working Register Pointer
Figure 31. Register Pointer (FD_H: Read/Write)
R255 SPL
D7 D6 D5 D4 D3 D2 D1 D0
Stack Pointer Lower
Byte (SP0-SP7)
Figure 32. Stack Pointer (FFH: Read/Write)
PRELIMINARY
23