Z8018x Family
MPU User Manual
ix
List of Figures
Z80180, Z8S180, Z8L180 MPU Operation . . . . . . . . . . . . . . . . . . . .1
Figure 1. 64-Pin DIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Figure 2. 68-Pin PLCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Figure 3. 80-Pin QFP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Figure 4. Z80180/Z8S180/Z8L180 Block Diagram . . . . . . . . . . . . . . .6
Figure 5. Operation Mode Control Register . . . . . . . . . . . . . . . . . . . .15
Figure 6. M1 Temporary Enable Timing . . . . . . . . . . . . . . . . . . . . . .16
Figure 7. I/O Read and Write Cycles with IOC = 1
Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Figure 8. I/O Read and Write cycles with IOC = 0
Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Figure 9. Op Code Fetch (without Wait State) Timing Diagram . . . .19
Figure 10. Op Code Fetch (with Wait State) Timing Diagram . . . . . .20
Figure 11. Memory Read/Write (without Wait State)
Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Figure 12. Memory Read/Write (with Wait State)
Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Figure 13. I/O Read/Write Timing Diagram . . . . . . . . . . . . . . . . . . . .23
Figure 14. Instruction Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . .24
Figure 15. RESET Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Figure 16. Bus Exchange Timing During Memory Read . . . . . . . . . . .26
Figure 17. Bus Exchange Timing During CPU Internal Operation . . .27
Figure 18. WAIT Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Figure 19. Memory and I/O Wait State Insertion
(DCNTL – DMA/Wait Control Register) . . . . . . . . . . . . . .29
Figure 20. HALT Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . .33
UM005001-ZMP0400
ZILOG [ ZILOG, INC. ]
