Switching Characteristics for EPROM mode
Value
Characteristic
Symbol
Units
Conditions
Min. Max.
tPCD
tWH
tPCH
tWW
tAD
Delay from
Delay from
Delay from
low to Master
50
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
DS
PC1
low to
high
5
50
250
30
20
10
0
DS
PC0
high to
high
DS
PC1
high time
high to new EPROM address
DS
DS
tDS
EPROM data setup time
tRW
tCSU
tCH
tDA
tDEL
tEXP
low time
setup time
hold time
Single device
DS
CE
CE
0
EPROM data access time
Expansion in to data out
to
PC0 PC1
200
30
50
delay
Greater than tDEL at all temperatures
tRW
tWW
tWH
DS FROM MASTER
PC1 FROM MASTER
tPCD
tEXP
PC1 FROM NEXT DEVICE
tPCH
PC1 FROM LAST DEVICE
(PC0 TO MASTER)
tAD
VALID
VALID
EPROM ADDRESS
EPROM DATA
tDA
tDS
VALID
tCSU
CE
tDEL
VALID
tDEL
VALID
tCH
DATA OUTPUT FROM FIRST DEVICE
DATA OUTPUT FROM SECOND DEVICE
Fig. 11 EPROM timing
19
MITEL [ MITEL NETWORKS CORPORATION ]
