Datasheet

DS3112
114 of 133
Figure 13-
Table 13-4. AC Characteristics—CPU Bus (Multiplexed and Nonmultiplexed)
(V
DD
= 3.3V ±5%, T
A
= 0°C to +70°C for DS3112; T
A
= -40°C to +85°C for DS3112N.)
(See 4, Figure 13-5, Figure 13-6, Figure 13-7, Figure 13-8, Figure 13-9, Figure 13-10,
and
Figure 13-11.)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Setup Time for CA[7:0] Valid to CCS
Active
t1 0 ns
Setup Time for CCS Active to CRD,
CWR, or CDS Active
t2 0 ns
Delay Time from CRD or CDS Active
to CD[15:0] Valid
t3 65 ns
Hold Time from CRD or CWR or CDS
Inactive to CCS Inactive
t4 0 ns
Hold Time from CCS or CRD or CDS
Inactive to CD[15:0] Tri-State
t5 5 20 ns
Wait Time from CWR or CDS Active
to Latch CD[15:0]
t6 65 ns
CD[15:0] Setup Time to CWR or CDS
Inactive
t7 10 ns
CD[15:0] Hold Time from CWR or
CDS Inactive
t8 2 ns
CA[7:0] Hold Time from CWR or
CRD or CDS Inactive
t9 5 ns
CRD, CWR, or CDS Inactive Time t10 75 ns
Muxed Address Valid to CALE Falling t11 10 ns 2
Muxed Address Hold Time t12 10 ns 2
CALE Pulse Width t13 30 ns 2
Setup Time for CALE High or Muxed
Address Valid to CCS Active
t14 0 ns 2
NOTES:
1) Figure 13-4In nonmultiplexed bus applications ( ), CALE should be tied high.
2) Figure 13-5In multiplexed bus applications ( ), CA[7:0] should be tied to CD[7:0] and the falling edge of CALE
will latch the address.