參數(shù)資料
型號(hào): DS3803
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類(lèi): DRAM
英文描述: 1024K Flexible NV SRAM SIMM(1024K靈活的非易失性SRAM SIMM)
中文描述: 32K X 32 NON-VOLATILE SRAM MODULE, 70 ns, SMA72
封裝: SIMM-72
文件頁(yè)數(shù): 8/10頁(yè)
文件大?。?/td> 83K
代理商: DS3803
DS3803
042398 8/10
TIMING DIAGRAM: POWER–DOWN AND POWER–UP
V
CC
2.7V
t
F
t
PD
t
R
t
REC
BACKUP CURRENT
SUPPLIED FROM
LITHIUM BATTERY
CE,
WE
V
TP
SEE NOTE 10
t
DR
SLEWS WITH
V
CC
t
PU
V
IH
POWER–DOWN/POWER–UP TIMING
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
V
CC
Fail Detect to CE and WE
Inactive
t
PD
1.5
μ
s
V
CC
Slew from V
TP
to 0V
t
F
300
μ
s
V
CC
Slew from 0V to V
TP
t
R
300
μ
s
V
CC
Valid to CE and WE Inactive
t
PU
2
ms
V
Valid to End of Write
Protection
t
REC
125
ms
(t
A
= 25
°
C)
NOTES
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
Expected Data Retention Time
t
DR
10
years
9
WARNING
Under no circumstances are negative undershoots, of any amplitude, allowed when device is in battery backup mode.
NOTES:
1. WE is high throughout read cycle.
2. OE = V
IH
or V
IL
. If OE = VIH during write cycle, the output buffers remain in a high impedance state.
3. t
WP
is specified as the logical AND of CE and WE. t
WP
is measured from the latter of CE or WE going low to the
earlier of CE or WE going high.
4. t
DS
is measured from the earlier of CE or WE going high.
5. These parameters are sampled with a 5 pF load and are not 100% tested.
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