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X24C45SM Datasheet

  • X24C45SM

  • Serial AUTOSTORE NOVRAM

  • 192.25KB

  • 12頁(yè)

  • INTERSIL   INTERSIL

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X24C45
256 Bit, 16 x 16 Bit
Data Sheet
June 1, 2005
FN8104.0
Serial AUTOSTORE鈩?NOVRAM
FEATURES
鈥?AUTOSTORE NOVRAM
鈥擜utomatically performs a store operation
upon loss of V
CC
鈥?Single 5V supply
鈥?Ideal for use with single chip microcomputers
鈥擬inimum I/O interface
鈥擲erial port compatible (COPS
鈩?/div>
, 8051)
鈥擡asily interfaced to microcontroller ports
鈥?Software and hardware control of nonvolatile
functions
鈥?Auto recall on power-up
鈥?TTL and CMOS compatible
鈥?Low power dissipation
鈥擜ctive current: 10mA
鈥擲tandby current: 50碌A(chǔ)
鈥?8-lead PDIP and 8-lead SOIC packages
鈥?High reliability
鈥擲tore cycles: 1,000,000
鈥攄ata retention: 100 years
IBLOCK DIAGRAM
DESCRIPTION
The Intersil X24C45 is a serial 256-bit NOVRAM featur-
ing a static RAM configured 16 x 16, overlaid bit-by-bit
with a nonvolatile EEPROM array. The X24C45 is fabri-
cated with Intersil鈥檚 Advanced CMOS Floating Gate
technology.
The Intersil NOVRAM design allows data to be trans-
ferred between the two memory arrays by means of
software commands or external hardware inputs. A
store operation (RAM data to EEPROM) is completed
in 5ms or less and a recall operation (EEPROM data to
RAM) is completed in 2碌s or less.
The X24C45 also includes the AUTOSTORE feature, a
user selectable feature that automatically performs a
store operation when V
CC
falls below a preset threshold.
Intersil NOVRAMs are designed for unlimited write
operations to RAM, either from the host or recalls from
EEPROM and a minimum 1,000,000 store operations.
Inherent data retention is specified to be greater than
100 years.
Nonvolatile
EEPROM
E
ST
Row
Decode
Static
RAM
256-Bit
AL
L
O
R
Control
Logic
RECALL (6)
AS (7)
CE (1)
DI (3)
SK (2)
Instruction
Register
Column
Decode
R
EC
DO (4)
Instruction
Decode
4-Bit
Counter
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.

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