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AT25256-10CC-2.7 PDF预览

AT25256-10CC-2.7

更新时间: 2024-11-10 22:07:11
品牌 Logo 应用领域
爱特美尔 - ATMEL 可编程只读存储器电动程控只读存储器电可擦编程只读存储器
页数 文件大小 规格书
17页 233K
描述
SPI Serial EEPROMs

AT25256-10CC-2.7 数据手册

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Features  
Serial Peripheral Interface (SPI) Compatible  
Supports SPI Modes 0 (0,0) and 3 (1,1)  
Low Voltage and Standard Voltage Operation  
– 5.0 (VCC = 4.5V to 5.5V)  
– 2.7 (VCC = 2.7V to 5.5V)  
– 1.8 (VCC = 1.8V to 3.6V)  
3 MHz Clock Rate  
64-Byte Page Mode and Byte Write Operation  
Block Write Protection  
– Protect 1/4, 1/2, or Entire Array  
SPI Serial  
EEPROMs  
128K (16,384 x 8)  
256K (32,768 x 8)  
Write Protect (WP) Pin and Write Disable Instructions for  
Both Hardware and Software Data Protection  
Self-Timed Write Cycle (5 ms Typical)  
High Reliability  
– Endurance: 100,000 Write Cycles  
– Data Retention: >200 Years  
– ESD Protection: >4000V  
Automotive Grade and Extended Temperature Devices Available  
8-Pin PDIP, 8-Pin EIAJ SOIC, 8-Pin and 16-Pin JEDEC SOIC, 14-Pin and 20-Pin TSSOP,  
and 8-Pin Leadless Array Packages  
AT25128  
AT25256  
Description  
The AT25128/256 provides 131,072/262,144 bits of serial electrically erasable pro-  
grammable read only memory (EEPROM) organized as 16,384/32,768 words of 8 bits  
each. The device is optimized for use in many industrial and commercial applications  
where low power and low voltage operation are essential. The devices are available in  
(continued)  
Pin Configurations  
14-Lead TSSOP  
Pin Name  
Function  
CS  
Chip Select  
CS  
SO  
1
2
3
4
5
6
7
14  
13  
12  
11  
10  
9
VCC  
HOLD  
NC  
SCK  
SI  
Serial Data Clock  
Serial Data Input  
Serial Data Output  
Ground  
NC  
NC  
NC  
NC  
NC  
WP  
GND  
SCK  
SI  
SO  
8
20-Lead TSSOP*  
GND  
VCC  
WP  
16-Pin SOIC  
Power Supply  
Write Protect  
Suspends Serial Input  
No Connect  
NC  
CS  
1
2
3
4
5
6
7
8
9
10  
20  
19  
18  
17  
16  
15  
14  
13  
12  
11  
NC  
VCC  
HOLD  
HOLD  
NC  
CS  
SO  
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
11  
10  
9
VCC  
HOLD  
NC  
SO  
SO  
HOLD  
NC  
NC  
NC  
NC  
NC  
NC  
NC  
NC  
NC  
WP  
GND  
DC  
SCK  
SI  
NC  
NC  
DC  
Don't Connect  
WP  
GND  
SCK  
SI  
DC  
NC  
NC  
8-Pin PDIP  
8-Pin SOIC  
8-Pin Leadless Array  
VCC  
HOLD  
SCK  
SI  
8
7
6
5
1
2
3
4
CS  
1
2
8
7
1
2
8
7
VCC  
VCC  
CS  
SO  
CS  
SO  
SO  
HOLD  
SCK  
SI  
HOLD  
SCK  
SI  
WP  
GND  
3
4
6
5
3
4
6
5
WP  
WP  
GND  
GND  
Bottom View  
Rev. 0872E–08/98  
*Note: Pins 3, 4 and 17, 18 are internally connected for 14-lead TSSOP socket compatibility.  

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