am49dl640bg Meet Spansion Inc., am49dl640bg Datasheet - Page 59

• Manufacturer Part Number: am49dl640bg
• Description: 64 Mbit 8 M ? 8-bit/4 M ? 16-bit Cmos And 32 Mbit 512k ? 16-bit Pseudo Static Ram Preliminary
• Manufacturer: Meet Spansion Inc.

pSRAM DATA RETENTION
Notes:
1. CE1#s
2. Typical values are not 100% tested.
pSRAM POWER ON AND DEEP POWER DOWN
Note: Data cannot be retained during deep power-down standby mode.
58
CE#1
CE#2
CE#1
CE#2
V
DD
Parameter
Symbol
t
t
t
V
I
t
t
DPD
CHC
CHP
DR
CS
CH
DR
V
CC
– 0.2 V, CE2s
Parameter Description
V
Data Retention Current
CE2 Setup Time
CE2 Hold Time
CE2 Pulse Width
CE2 Hold from CE#1
CE2 Hold from Power On
V
DD min
CC
for Data Retention
V
t
CHP
CC
– 0.2 V (CE1#s controlled) or CE2s
Figure 33. Deep Power-down Timing
Figure 34. Power-on Timing
t
P R E L I M I N A R Y
CHC
Test Setup
CS1#s
V
(Note 1)
Am49DL640BG
CC
= 3.0 V, CE1#s
t
DPD
V
CC
– 0.2 V (Note 1)
t
CH
V
0.2 V (CE2s controlled).
CC
– 0.2 V
Min
300
2.7
10
30
0
0
t
CH
(Note 2)
Typ
1.0
March 8, 2002
Max
3.3
70
Unit
ms
µA
ns
µs
ns
µs
V