MT90220
.
AC Electrical Characteristics - External Memory Interface Timing - Read Access
Item
Description
Min
Typ
Max
t
t
t
t
t
t
t
t
t
t
MT90220 System Clock Period
Read Cycle Time
38 ns
40 ns
30 ns
46 ns
CLK
1 t
-10 ns
CLK
RC
Address Setup Time
Address Hold Time
9 ns
AVRS
AVRH
CSRS
CSRH
WERS
WERH
RDS
3 ns
Chip Select Setup Time
Chip Select Hold Time
Write Enable* Setup Time
Write Enable* Hold Time
Data Setup Time
9 ns
3 ns
9 ns
3 ns
0
Data Hold Time
3
RDH
tclk
System Clock
tavrh
tavrs
SR_A[18:0]
SR_CS
Address Valid
trc
tcsrs
tcsrh
twerh
SR_WE
twers
trdh
Data Valid
SR_D[7:0]
trds
Figure 30 - External Memory Interface Timing - Read Cycle
92
MITEL [ MITEL NETWORKS CORPORATION ]
