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AT93C56B-MAHM-T

更新时间： 2024-11-24 12:33:15
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爱特美尔 - ATMEL 存储内存集成电路光电二极管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时钟
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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AT93C56B-MAHM-T 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  
1234567...21

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AT93C56B-MAHM-T 替代型号

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