MT8924
Preliminary Information
AC Electrical Characteristics - Write Timing (TOP=0 to 70°C; VDD=5V 5%)
Characteristics
Write Pulse low width
Write Pulse high width
Sym
Min
Typ
Max
Units
Test Conditions
1
2
3
tWLWR
tWHWR
150
200
500
ns
ns
ns
Repetition Interval between active Write tREPWR
Pulses
4
5
Read high setup time to active Write
Pulse
tSHRD
0
ns
ns
Read high hold time from active Write
Pulse
tHHRD
20
6
7
8
9
Write Pulse rise time
tRWR
tFWR
60
60
0
ns
ns
Write Pulse fall time
CS low setup time to WR falling edge
tSLCSWR
ns Active case
CS low hold time from WR falling edge tHLCSWR
tSHCSWR
11 CS high hold time from WR rising edge tHHCSWR
0
ns Active case
10 CS high setup time to WR rising edge
0
ns
ns
ns
ns
ns
ns
0
12 C/D setup time to Write Pulse end
13 C/D hold time from Write Pulse end
14 Input setup time to Write Pulse end
tSC/DWR
tHCDWR
tSDWR
130
25
130
25
15 Input hold time from Bus Write Pulse
end
tHDWR
t
t
WHWR
WLWR
WR
t
t
RWR
FWR
REPWR
t
t
t
SHRD
HHRD
RD
CS
t
SHCSWR
t
HLCSWR
t
t
HHCSWR
SLCSWR
t
t
HCDWR
SCDWR
C/D
DIN
t
t
HDWR
SDWR
Figure 8 - Write Timing Characteristics
8-14
MITEL [ MITEL NETWORKS CORPORATION ]
