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AT25020A-10TI-1.8 PDF预览

AT25020A-10TI-1.8

更新时间： 2024-11-24 03:22:51
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
20页 580K
描述
EEPROM, 256X8, Serial, CMOS, PDSO8, 4.40 MM, PLASTIC, MO-153AA, TSSOP-8

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中文翻译

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AT25020A-10TI-1.8 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  
• Low-voltage and Standard-voltage Operation  
– 2.7 (VCC = 2.7V to 5.5V)  
– 1.8 (VCC = 1.8V to 5.5V)  
• 20 MHz Clock Rate (5V)  
• 8-byte Page Mode  
• 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: One Million Write Cycles  
– Data Retention: 100 Years  
• Automotive Grade, Extended Temperature and Lead-free/Halogen-free Devices  
Available  
SPI Serial  
EEPROMs  
1K (128x8)  
2K (256x8)  
• 8-lead PDIP, 8-lead JEDEC SOIC, 8-lead MAP and 8-lead TSSOP Packages  
4K (512x8)  
Description  
AT25010A  
AT25020A  
AT25040A  
The AT25010A/020A/040A provides 1024/2048/4096 bits of serial electrically eras-  
able programmable read-only memory (EEPROM) organized as 128/256/512 words of  
8 bits each. The device is optimized for use in many industrial and commercial appli-  
cations where low-power and low-voltage operation are essential. The  
AT25010A/020A/040A is available in space saving 8-lead PDIP, 8-lead JEDEC SOIC,  
8-lead MAP, and 8-lead TSSOP packages.  
The AT25010A/020A/040A 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  
separate erase cycle is required before write.  
Block write protection is enabled by programming the status register with one of four  
blocks of write protection. Separate Program Enable and Program disable instructions  
are provided for additional data protection. Hardware data protection is provided via  
the WP pin to protect against inadvertent write attempts. The HOLD pin may be used  
to suspend any serial communication without resetting the serial sequence.  
Table 1. Pin Configuration  
8-lead SOIC  
8-lead PDIP  
Pin Name  
CS  
Function  
Chip Select  
CS  
SO  
1
2
3
4
8
7
6
5
VCC  
HOLD  
SCK  
SI  
CS  
SO  
1
8
7
6
5
VCC  
HOLD  
SCK  
SI  
2
3
4
SCK  
SI  
Serial Data Clock  
Serial Data Input  
Serial Data Output  
Ground  
WP  
WP  
GND  
GND  
SO  
8-lead MAP  
VCC 8 1 CS  
8-lead TSSOP  
GND  
VCC  
WP  
CS  
SO  
1
2
3
4
8
7
6
5
VCC  
HOLD  
SCK  
SI  
Power Supply  
Write Protect  
HOLD 7  
SCK 6  
SI 5  
2 SO  
3 WP  
4 GND  
WP  
GND  
HOLD  
Suspends Serial Input  
Bottom view  
3348H–SEEPR–9/04  
1234567...20

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