CS98100
1.2.6
ROM/NVRAM Interface
Symbol
trc
tcds
tods
tads
taws
tcws
twp
twdo
tdh
Description
Read Cycle Time
CE to Data Setup
OE to Data Setup
Address to Data Setup
Address to WE setup (Write)
CE to WE setup (Write)
WE Pulse Width (Write)
CE to Data Output (Write)
WE to Data Hold (Write)
Min
98
20
5
160
10
Table 7. RAM/NVROM Characteristics
Typ
-5
Max
80
70
90
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
Note:Read timing based on 10.5 ns memory clock and 4 programmed wait states.
A d d re ss
M _ A [11 :0 ],
M _ D [27 :1 6]
NVM_CE_N
NVM_OE_N
(M_AP)
M _D[7:0]
NVM_WE_N
tads
trc
tcds
tods
Figure 10. ROM/NVRAM Reading Timing
15