
Application Note
The Z180™ Interfaced with the SCC at MHZ
7-7
(Extends Opcode Fetch Cycle Only; Not Working in Z
Mode of Operation)
Figure 5. Physical Memory Address Map
S-RAM Image
EP-ROM Image
S-RAM Image
/EP-ROM Image
S-RAM Image
EP-ROM Image
256K SRAM
EP-ROM
27C256
FFFFFH
F8000H
F0000H
28000H
20000H
18000H
10000H
08000H
00000H
Image can be
killed trhrough
/USRRAM and
/USRROM
Figure 6. Wait State Generator Logic
D
CK
Q
CL
PR
D
CK
Q
CL
PR
'74 '74
/M1
Ø
/M1 /WAIT
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