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AT25256A-10PE-2.7 PDF预览

AT25256A-10PE-2.7

更新时间: 2024-11-12 03:28:03
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光电二极管
页数 文件大小 规格书
18页 413K
描述
EEPROM, 32KX8, Serial, CMOS, PDIP8, 0.300 INCH, PLASTIC, MS-001BA, DIP-8

AT25256A-10PE-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)  
– Data Sheet Describes Mode 0 Operation  
Medium-voltage and Standard-voltage Operation  
– 5.0 (VCC = 4.5V to 5.5V)  
– 2.7 (VCC = 2.7V to 5.5V)  
Automotive Temperature Range 40°C to +125°C  
5 MHz Clock Rate  
64-byte Page Mode and Byte Write Operation  
Block Write Protection  
– Protect 1/4, 1/2, or Entire Array  
Write Protect (WP) Pin and Write Disable Instructions for both Hardware and Software  
Data Protection  
Self-timed Write Cycle (5 ms max)  
High Reliability  
– Endurance: 1 Million Write Cycles  
– Data Retention: >100 Years  
8-lead PDIP, 8-lead JEDEC SOIC, and 8-lead TSSOP Packages  
SPI Serial  
Automotive  
Temperature  
EEPROMs  
128K (16,384 x 8)  
256K (32,768 x 8)  
Description  
The AT25128A/256A 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 automotive applications  
where low-power and low-voltage operation are essential. The devices are available in  
space-saving 8-lead PDIP, 8-lead JEDEC SOIC, and 8-lead TSSOP packages.  
AT25128A  
AT25256A  
The AT25128A/256A is enabled through the Chip Select pin (CS) and accessed via a  
three-wire interface consisting of Serial Data Input (SI), Serial Data Output (SO), and  
Serial Clock (SCK). All programming cycles are completely self-timed, and no sepa-  
rate erase cycle is required before write.  
Table 1. Pin Configurations  
8-Lead PDIP  
Pin Name  
CS  
Function  
1
2
3
4
8
7
6
5
CS  
SO  
WP  
VCC  
HOLD  
SCK  
SI  
Chip Select  
SCK  
SI  
Serial Data Clock  
Serial Data Input  
Serial Data Output  
Ground  
GND  
SO  
8-lead SOIC  
GND  
VCC  
WP  
CS  
SO  
WP  
VCC  
1
2
3
4
8
7
6
5
Power Supply  
Write Protect  
Suspends Serial Input  
No Connect  
HOLD  
SCK  
SI  
GND  
HOLD  
NC  
8-lead TSSOP  
DC  
Don't Connect  
1
2
3
4
8
7
6
5
CS  
SO  
WP  
VCC  
HOLD  
SCK  
SI  
GND  
5088E–SEEPR–10/05  

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