Preliminary Information
MT8924
AC Electrical Characteristics - Read Timing (TOP=0 to 70°C; VDD=5V 5%)
Characteristics
Read Pulse low width
Read Pulse high width
Sym
Min
Typ
Max
Units
Test Conditions
1
2
3
tWLRD
tWHRD
180
200
500
ns
ns
ns
Repetition Interval between active Read tREPRD
Pulses
4
5
Write high setup time to active Read
Pulse
tSHWR
0
ns
ns
Write high hold time from active Read
Pulse
tHHWR
20
6
7
8
9
Read Pulse rise time
tRRD
tFRD
60
60
ns
ns
ns
ns
ns
ns
ns
ns
ns
Read Pulse fall time
Low setup time to RD falling edge
Low hold time from RD falling edge
tSLCSRD
tHLCSRD
tSHCSRD
tHHCSRD
tSCDRD
tHCDRD
tPDD
0
0
Active case
Active case
Active case
Active case
10 High setup time to RD falling edge
11 High hold time from RD rising edge
12 C/D setup time to RD Pulse start
13 Hold time from Read Pulse end
0
0
20
25
14 Propagation delay from falling edge of
Read Pulse
120
80
Read; CL=200pF
Write; CL=200pF
15 Propagation delay from rising edge of
Read Pulse to high impedance state
tHZ
ns
t
t
WHRD
WLRD
RD
t
t
RRD
FRD
REPRD
t
t
t
HHWR
SHWR
WR
CS
t
SHCSRD
t
t
SLCSRD
HLCSRD
t
HHCSRD
t
t
SCDRD
HCDRD
C/D
t
HZ
t
PDD
DOUT
Figure 9 - Read Timing Characteristics
8-15
MITEL [ MITEL NETWORKS CORPORATION ]
