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AT24C256W-10SC-1.8
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AT24C256W-10SC-1.8数据手册
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© Semiconductor Components Industries, LLC, 2014
January, 2014 Rev. 14
1 Publication Order Number:
CAT24C256/D
CAT24C256
256 kb I
2
C CMOS Serial
EEPROM
Description
The CAT24C256 is a 256 kb Serial CMOS EEPROM, internally
organized as 32,768 words of 8 bits each.
It features a 64byte page write buffer and supports the Standard
(100 kHz), Fast (400 kHz) and FastPlus (1 MHz) I
2
C protocol.
Write operations can be inhibited by taking the WP pin High (this
protects the entire memory).
External address pins make it possible to address up to eight
CAT24C256 devices on the same bus.
OnChip ECC (Error Correction Code) makes the device suitable
for high reliability applications.*
Features
Supports Standard, Fast and FastPlus I
2
C Protocol
1.8 V to 5.5 V Supply Voltage Range
64Byte Page Write Buffer
Hardware Write Protection for Entire Memory
Schmitt Triggers and Noise Suppression Filters on I
2
C Bus Inputs
(SCL and SDA)
Low Power CMOS Technology
1,000,000 Program/Erase Cycles
100 Year Data Retention
Industrial and Extended Temperature Range
PDIP, SOIC, TSSOP, MSOP 8Lead and
TDFN, UDFN 8Pad Packages
This Device is PbFree, Halogen Free/BFR Free, and RoHS
Compliant
Figure 1. Functional Symbol
SDA
SCL
WP
CAT24C256
V
CC
V
SS
A
2
, A
1
, A
0
* Available for New Product (Rev. E)
http://onsemi.com
PIN CONFIGURATION
SDA
WP
V
CC
V
SS
A
2
A
1
A
0
1
See detailed ordering and shipping information in the package
dimensions section on page 18 of this data sheet.
ORDERING INFORMATION
SOIC8
W SUFFIX
CASE 751BD
SOIC8
X SUFFIX
CASE 751BE
SCL
PDIP (L), SOIC (W, X), TSSOP (Y),
TDFN (ZD2)**, UDFN (HU4), MSOP (Z)
PDIP8
L SUFFIX
CASE 646AA
TSSOP8
Y SUFFIX
CASE 948AL
Device AddressA
0
, A
1
, A
2
Serial DataSDA
Serial ClockSCL
Write ProtectWP
Power SupplyV
CC
GroundV
SS
FunctionPin Name
PIN FUNCTION
For the location of Pin 1, please consult the
corresponding package drawing.
TDFN8**
ZD2 SUFFIX
CASE 511AM
UDFN8
HU4 SUFFIX
CASE 517AZ
** Not recommended for new designs
MSOP8
Z SUFFIX
CASE 846AD
The exposed pad for the TDFN/UDFN packages can
be left floating or connected to Ground.

AT24C256W-10SC-1.8 数据手册

Microchip(微芯)
18 页 / 0.28 MByte
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19 页 / 0.2 MByte
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21 页 / 0.46 MByte

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