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AT28C64B PDF预览

AT28C64B

更新时间: 2024-11-23 22:56:39
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
页数 文件大小 规格书
13页 310K
描述
64K (8K x 8) Parallel EEPROM with Page Write and Software Data Protection

AT28C64B 数据手册

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Features  
Fast Read Access Time – 150 ns  
Automatic Page Write Operation  
Internal Address and Data Latches for 64 Bytes  
Fast Write Cycle Times  
Page Write Cycle Time: 10 ms Maximum  
1 to 64-byte Page Write Operation  
Low Power Dissipation  
40 mA Active Current  
100 µA CMOS Standby Current  
Hardware and Software Data Protection  
DATA Polling and Toggle Bit for End of Write Detection  
High Reliability CMOS Technology  
Endurance: 100,000 Cycles  
64K (8K x 8)  
Parallel  
Data Retention: 10 Years  
EEPROM with  
Page Write and  
Software Data  
Protection  
Single 5V 10% Supply  
CMOS and TTL Compatible Inputs and Outputs  
JEDEC Approved Byte-wide Pinout  
Commercial and Industrial Temperature Ranges  
Description  
The AT28C64B is a high-performance electrically-erasable and programmable read  
only memory (EEPROM). Its 64K of memory is organized as 8,192 words by 8 bits.  
Manufactured with Atmels advanced nonvolatile CMOS technology, the device offers  
access times to 150 ns with power dissipation of just 220 mW. When the device is  
AT28C64B  
deselected, the CMOS standby current is less than 100 µA.  
(continued)  
Pin Configurations  
PDIP, SOIC  
Top View  
Pin Name  
A0 - A12  
CE  
Function  
NC  
A12  
A7  
1
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
VCC  
WE  
NC  
Addresses  
2
Chip Enable  
Output Enable  
Write Enable  
Data Inputs/Outputs  
No Connect  
3
A6  
4
A8  
OE  
A5  
5
A9  
A4  
6
A11  
OE  
WE  
A3  
7
A2  
8
A10  
CE  
I/O0 - I/O7  
NC  
A1  
9
A0  
10  
11  
12  
13  
14  
I/O7  
I/O6  
I/O5  
I/O4  
I/O3  
I/O0  
I/O1  
I/O2  
GND  
DC  
Dont Connect  
PLCC  
Top View  
TSOP  
Top View  
OE  
A11  
A9  
1
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
A10  
CE  
A6  
A5  
A4  
A3  
A2  
5
6
7
8
9
29 A8  
28 A9  
27 A11  
26 NC  
25 OE  
24 A10  
23 CE  
22 I/O7  
21 I/O6  
2
3
I/O7  
I/O6  
I/O5  
I/O4  
I/O3  
GND  
I/O2  
I/O1  
I/O0  
A0  
A8  
4
NC  
WE  
VCC  
NC  
A12  
A7  
5
6
A1 10  
A0 11  
7
8
NC 12  
I/O0 13  
9
10  
11  
12  
13  
14  
A6  
A5  
A4  
A1  
Rev. 0270H12/99  
A3  
A2  
Note:  
PLCC package pins 1 and 17 are  
DONT CONNECT.  

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