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AT25320B_10

更新时间： 2024-01-28 15:19:20
品牌 Logo 应用领域
爱特美尔 - ATMEL 存储可编程只读存储器
页数 文件大小 规格书
26页 1248K
描述
serial electrically-erasable programmable read-only memory

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中文翻译

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AT25320B_10 数据手册

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Features  
• Serial Peripheral Interface (SPI) Compatible  
• Supports SPI Modes 0 (0,0) and 3 (1,1)  
– Datasheet Describes Mode 0 Operation  
• Low-voltage and Standard-voltage Operation  
– 1.8 (VCC = 1.8V to 5.5V)  
• 20MHz Clock Rate (5V)  
• 32-byte Page Mode  
• Block Write Protection  
SPI Serial  
EEPROMs  
32K (4096 x 8)  
64K (8192 x 8)  
– 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 (5ms max)  
• High Reliability  
– Endurance: One Million Write Cycles  
– Data Retention: 100 Years  
• Green (Pb/Halide-free/RoHS Compliant) Packaging Options  
• Die Sales: Wafer Form, Tape and Reel, and Bumped Wafers  
Atmel  
Description  
AT25320B  
AT25640B  
The Atmel® AT25320B/640B provides 32768-/65536-bits of serial electrically-erasable  
programmable read-only memory (EEPROM) organized as 4096/8192 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 AT25320B/640B is  
available in space-saving 8-lead JEDEC SOIC, 8-lead UDFN, 8-lead XDFN, 8-lead  
TSSOP, and 8-ball VFBGA packages.  
The AT25320B/640B 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 0-1.  
Pin Configuration  
8-lead SOIC  
8-lead TSSOP  
Pin Name Function  
CS  
SO  
VCC  
CS  
SO  
1
2
3
4
8
7
6
5
VCC  
1
2
3
4
8
7
6
5
HOLD  
SCK  
SI  
HOLD  
SCK  
SI  
CS  
Chip Select  
WP  
WP  
SCK  
SI  
Serial Data Clock  
Serial Data Input  
Serial Data Output  
Ground  
GND  
GND  
8-lead UDFN  
8-lead XDFN  
SO  
8
7
6
5
1
2
3
4
8
7
6
5
1
2
3
4
VCC  
CS  
SO  
VCC  
CS  
GND  
VCC  
WP  
HOLD  
SCK  
SI  
HOLD  
SCK  
SI  
SO  
Power Supply  
Write Protect  
WP  
WP  
GND  
GND  
Bottom View  
Bottom View  
HOLD  
Suspends Serial Input  
8-ball VFBGA  
VCC  
8
7
6
5
1
2
3
4
CS  
SO  
HOLD  
SCK  
SI  
WP  
GND  
8535F–SEEPR–6/10  
Bottom View  
1234567...26

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