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CAT25256
256-Kb SPI Serial CMOS
EEPROM
Description
The CAT25256 is a 256 ? Kb Serial CMOS EEPROM device
internally organized as 32Kx8 bits. This features a 64 ? byte page write
buffer and supports the Serial Peripheral Interface (SPI) protocol. The
device is enabled through a Chip Select (CS) input. In addition, the
required bus signals are clock input (SCK), data input (SI) and data
output (SO) lines. The HOLD input may be used to pause any serial
http://onsemi.com
communication with the CAT25256 device. The device features
software and hardware write protection, including partial as well as
full array protection.
SOIC ? 8
V SUFFIX
CASE 751BD
UDFN ? 8
HU4 SUFFIX
CASE 517AZ
SOIC ? 8
X SUFFIX
CASE 751BE
On ? Chip ECC (Error Correction Code) makes the device suitable
for high reliability applications.*
Features
V CC
CS
?
?
?
?
?
?
?
?
?
?
?
?
?
?
20 MHz (5 V) SPI Compatible
1.8 V to 5.5 V Supply Voltage Range
SPI Modes (0,0) & (1,1)
64 ? byte Page Write Buffer
Additional Identification Page with Permanent Write Protection
(New Product)
Self ? timed Write Cycle
Hardware and Software Protection
Block Write Protection
? Protect 1/4, 1/2 or Entire EEPROM Array
Low Power CMOS Technology
1,000,000 Program/Erase Cycles
100 Year Data Retention
Industrial and Extended Temperature Range
8 ? lead PDIP, SOIC, TSSOP and 8 ? pad UDFN and TDFN Packages
This Device is Pb ? Free, Halogen Free/BFR Free, and RoHS
Compliant
PDIP ? 8 TSSOP ? 8 TDFN ? 8**
L SUFFIX Y SUFFIX ZD2 SUFFIX
CASE 646AA CASE 948AL CASE 511AM
PIN CONFIGURATIONS
1
SO HOLD
WP SCK
V SS SI
PDIP (L), SOIC (V, X), TSSOP (Y),
UDFN (HU4), TDFN** (ZD2)
(Top View)
** Not recommended for new designs.
PIN FUNCTION
Pin Name ? Function
CS Chip Select
SO Serial Data Output
SI
V CC
WP
V SS
SI
Write Protect
Ground
Serial Data Input
CS
WP
CAT25256
SO
SCK
HOLD
Serial Clock
Hold Transmission Input
HOLD
SCK
V SS
V CC Power Supply
?The exposed pad for the TDFN/UDFN packages can
be left floating or connected to Ground.
Figure 1. Functional Symbol
* Available for New Product (Rev. E)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 20 of this data sheet.
? Semiconductor Components Industries, LLC, 2012
September, 2012 ? Rev. 7
1
Publication Order Number:
CAT25256/D
发布紧急采购，3分钟左右您将得到回复。
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功能描述:电可擦除可编程只读存储器 256K SPI Serial CMOS 电可擦除可编程只读存储器 RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8
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功能描述:电阻器网络与阵列 27ohm 5% Concave 8resistors RoHS:否 制造商:Vishay/Thin Film 产品类型:Networks 电路类型:Divider 电阻器数量: 电阻数值:10 kOhms 容差:0.1 % 温度系数: 管脚数量:3 工作温度范围:- 55 C to + 155 C 尺寸:1.02 mm W x 3.05 mm L x 1.4 mm H 引线间隔: 端接类型:SMD/SMT 封装:Reel
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