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STK25C48-W45I Datasheet

  • STK25C48-W45I

  • 2K X 8 AUTOSTORE NVSRAM

  • 86.46KB

  • 8頁

  • ETC

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STK25C48
2K x 8
AutoStore鈩?/div>
nvSRAM
QuantumTrap鈩?/div>
CMOS
Nonvolatile Static RAM
FEATURES
鈥?Nonvolatile Storage without Battery Problems
鈥?Directly Replaces 2K x 8 Static RAM, Battery-
Backed RAM or EEPROM
鈥?20ns, 25ns, 35ns and 45ns Access Times
鈥?/div>
STORE
to EEPROM Initiated by
AutoStore鈩?/div>
on Power Down
鈥?/div>
RECALL
to SRAM Initiated by Software or
Power Restore
鈥?10mA Typical I
CC
at 200ns Cycle Time
鈥?Unlimited READ, WRITE and
RECALL
Cycles
鈥?1,000,000
STORE
Cycles to EEPROM
鈥?100-Year Data Retention over Full Industrial
Temperature Range
鈥?Commercial and Industrial Temperatures
鈥?24-Pin 600 PDIP Package
DESCRIPTION
The STK25C48 is a fast
SRAM
with a nonvolatile
EEPROM
element incorporated in each static memory
cell. The
SRAM
can be read and written an unlimited
number of times, while independent nonvolatile data
resides in the
EEPROM.
Data transfers from the
SRAM
to
the
EEPROM
(the
STORE
operation) can take place auto-
matically on power down using charge stored in system
capacitance. Transfers from the
EEPROM
to the
SRAM
(the
RECALL
operation) take place automatically on res-
toration of power. The nvSRAM can be used in place of
existing 2K x 8
SRAMs
and also matches the pinout of
2K x 8 battery-backed
SRAMs, EPROMs
and
EEPROMs,
allowing direct substitution while enhancing performance.
There is no limit on the number of read or write cycles that
can be executed, and no support circuitry is required for
microprocessor interfacing.
BLOCK DIAGRAM
EEPROM ARRAY
32 x 512
ROW DECODER
V
CC
STORE/
RECALL
CONTROL
PIN CONFIGURATIONS
A
6
A
5
A
6
A
7
A
8
A
9
STORE
STATIC RAM
ARRAY
32 x 512
RECALL
POWER
CONTROL
A
5
A
4
A
3
A
2
A
1
A
0
DQ
0
DQ
1
DQ
2
V
SS
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
V
CC
A
8
A
9
W
G
A
10
E
DQ
7
DQ
6
DQ
5
DQ
4
DQ
3
24 - 600 PDIP
DQ
0
DQ
1
DQ
2
DQ
3
DQ
4
DQ
5
DQ
6
DQ
7
INPUT BUFFERS
COLUMN I/O
COLUMN DEC
PIN NAMES
A
0
- A
10
W
Address Inputs
Write Enable
Data In/Out
Chip Enable
Output Enable
Power (+ 5V)
Ground
A
0
A
1
A
2
A
3
A
4
A
10
DQ
0
- DQ
7
G
E
W
E
G
V
CC
V
SS
July 1999
3-31

STK25C48-W45I相關(guān)型號PDF文件下載

  • 型號
    版本
    描述
    廠商
    下載
  • 英文版
    2CH PURE COMPLEMENTARY D.P.P. SERIES
    ETC
  • 英文版
    2CH PURE COMPLEMENTARY D.P.P. SERIES
    ETC
  • 英文版
    2CH PURE COMPLEMENTARY D.P.P. SERIES
    ETC
  • 英文版
    2CH PURE COMPLEMENTARY D.P.P. SERIES
    ETC [ETC]
  • 英文版
    STEREO POWER AMPLIFIER
    ETC
  • 英文版
    OUTPUT STAGE OF AF POWER AMP
    ETC
  • 英文版
    OUTPUT STAGE OF AF POWER AMP
    ETC
  • 英文版
    OUTPUT STAGE OF AF POWER AMP
    ETC
  • 英文版
    2 CHANNEL 50W MIN AF POWER AMPLIFIER OUTPUT STAGE
    ETC
  • 英文版
    2CH PURE COMPLEMENTARY D.P.P. SERIES
    ETC
  • 英文版
    2CH PURE COMPLEMENTARY D.P.P. SERIES
    ETC
  • 英文版
    2CH PURE COMPLEMENTARY D.P.P. SERIES
    ETC
  • 英文版
    2CH PURE COMPLEMENTARY D.P.P. SERIES
    ETC [ ETC ]
  • 英文版
    TRANSISTOR | MOSFET | N-CHANNEL | 500V V(BR)DSS | 2A I(D) | ...
    ETC
  • 英文版
    TRANSISTOR | MOSFET | N-CHANNEL | 600V V(BR)DSS | 1.7A I(D) ...
    ETC
  • 英文版
    N - CHANNEL ENHANCEMENT MODE POWER MOS TRANSISTOR
    STMICROELECTRONICS
  • 英文版
    N - CHANNEL ENHANCEMENT MODE POWER MOS TRANSISTOR
    STMICROELECTRON...
  • 英文版
    CMOS nvSRAM High Performance 512 x 8 Nonvolatile Static RAM
    ETC
  • 英文版
    512 x 8 nvSRAM QuantumTrap⑩ CMOS Nonvolatile Static RAM
    SIMTEK
  • 英文版
    CMOS nvSRAM High Performance 512 x 8 Nonvolatile Static RAM
    ETC [ETC]

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