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AD621ARZ

更新时间： 2024-11-19 12:53:47
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
21页 1438K
描述
Three-wire Serial Electrically Erasable Programmable Read-only Memory

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中文翻译

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AD621ARZ 数据手册

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Features  
• Low-voltage and standard-voltage operation  
– VCC = 1.7V to 5.5V  
• User-selectable internal organization  
– 2K: 256 x 8 or 128 x 16  
– 4K: 512 x 8 or 256 x 16  
• Three-wire serial interface  
• Sequential read operation  
• 2MHz clock rate (5V)  
• Self-timed write cycle (5ms max)  
• High reliability  
Three-wire  
Serial Electrically  
Erasable  
– Endurance: One million write cycles  
– Data retention: 100 years  
Programmable  
Read-only Memory  
2K (256 x 8 or 128 x 16)  
4K (512 x 8 or 256 x 16)  
• 8-lead JEDEC SOIC, 8-lead TSSOP, 8-lead UDFN, 8-lead XDFN, and 8-ball VFBGA  
packages  
Description  
The Atmel® AT93C56B/66B provides 2048/4096 bits of serial electrically erasable pro-  
grammable read-only memory (EEPROM) organized as 128/256 words of 16 bits each  
(when the ORG pin is connected to VCC) and 256/512 words of 8 bits each (when the  
ORG pin is tied to ground). The device is optimized for use in many industrial and commer-  
cial applications where low-power and low-voltage operations are essential. The  
AT93C56B/66B is available in space-saving 8-lead JEDEC SOIC, 8-lead TSSOP, 8-lead  
UDFN, 8-lead XDFN, and 8-ball VFBGA packages.  
Atmel AT93C56B  
Atmel AT93C66B  
The AT93C56B/66B is enabled through the chip select pin (CS) and accessed via a  
three-wire serial interface consisting of data input (DI), data output (DO), and shift clock  
(SK). Upon receiving a read instruction at DI, the address is decoded and the data is clocked  
out serially on the data output pin, DO. The write cycle is completely self-timed, and no sep-  
arate erase cycle is required before write. The write cycle is only enabled when the part is in  
the erase/write enable state. When CS is brought high following the initiation of a write  
cycle, the DO pin outputs the ready/busy status of the part.  
The AT93C56B/66B operates from 1.7V to 5.5V.  
8-lead SOIC  
8-lead TSSOP  
Figure 0-1.  
Pin Configurations  
CS  
SK  
DI  
1
2
3
4
8
7
6
5
VCC  
NC  
CS  
SK  
DI  
1
8
7
6
5
VCC  
NC  
2
3
4
ORG  
GND  
ORG  
GND  
Pin Name  
CS  
Function  
DO  
DO  
Chip Select  
8-lead UDFN  
8-lead XDFN  
SK  
Serial Data Clock  
Serial Data Input  
Serial Data Output  
Ground  
8
7
6
5
1
2
3
4
8
7
6
5
1
2
3
4
VCC  
CS  
SK  
DI  
VCC  
CS  
DI  
NC  
ORG  
GND  
NC  
ORG  
GND  
SK  
DI  
DO  
DO  
DO  
GND  
VCC  
ORG  
NC  
8-ball VFBGA  
Bottom view  
Bottom view  
Power Supply  
Internal Organization  
No Connect  
8
7
6
5
1
2
3
4
CS  
SK  
DI  
VCC  
NC  
ORG  
GND  
DO  
8735A–SEEPR–1/11  
Bottom view  
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AD621BNZ ADI

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AD621BR ADI

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AD621BR-REEL ADI

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 		Low Drift, Low Power Instrumentation Amp with fixed gains of 10 and 100
AD621BRZ ADI

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AD621BRZ-REEL ADI

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