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AT28HC256F-90TC PDF预览

AT28HC256F-90TC

更新时间: 2024-11-04 23:32:31
品牌 Logo 应用领域
其他 - ETC 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
16页 432K
描述
x8 EEPROM

AT28HC256F-90TC 数据手册

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Features  
Fast Read Access Time – 70 ns  
Automatic Page Write Operation  
Internal Address and Data Latches for 64 Bytes  
Internal Control Timer  
Fast Write Cycle Times  
Page Write Cycle Time: 3 ms or 10 ms Maximum  
1 to 64-byte Page Write Operation  
Low Power Dissipation  
80 mA Active Current  
3 mA Standby Current  
256 (32K x 8)  
High-speed  
Parallel  
Hardware and Software Data Protection  
DATA Polling for End of Write Detection  
High Reliability CMOS Technology  
Endurance: 104 or 105 Cycles  
Data Retention: 10 Years  
Single 5V 10% Supply  
CMOS and TTL Compatible Inputs and Outputs  
JEDEC Approved Byte-wide Pinout  
Full Military, Commercial, and Industrial Temperature Ranges  
EEPROM  
AT28HC256  
Description  
The AT28HC256 is a high-performance electrically erasable and programmable read  
only memory. Its 256K of memory is organized as 32,768 words by 8 bits. Manufac-  
tured with Atmels advanced nonvolatile CMOS technology, the AT28HC256 offers  
(continued)  
Pin Configurations  
TSOP  
Top View  
Pin Name  
A0 - A14  
CE  
Function  
Addresses  
OE  
A11  
A9  
1
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
A10  
CE  
2
Chip Enable  
Output Enable  
Write Enable  
Data Inputs/Outputs  
No Connect  
3
I/O7  
I/O6  
I/O5  
I/O4  
I/O3  
GND  
I/O2  
I/O1  
I/O0  
A0  
A8  
4
OE  
A13  
WE  
VCC  
A14  
A12  
A7  
5
6
WE  
7
8
I/O0 - I/O7  
NC  
9
10  
11  
12  
13  
14  
A6  
A5  
DC  
Dont Connect  
A4  
A1  
A3  
A2  
LCC, PLCC  
Top View  
CERDIP, PDIP, FLATPACK  
Top View  
PGA  
Top View  
A14  
A12  
A7  
1
2
3
4
5
6
7
8
9
28 VCC  
27 WE  
26 A13  
25 A8  
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  
A6  
A5  
24 A9  
A4  
23 A11  
22 OE  
21 A10  
20 CE  
19 I/O7  
18 I/O6  
17 I/O5  
16 I/O4  
15 I/O3  
A3  
A2  
A1 10  
A0 11  
A1  
A0 10  
I/O0 11  
I/O1 12  
I/O2 13  
GND 14  
NC 12  
I/O0 13  
Rev. 0007I12/99  
Note: PLCC package pins 1 and  
17 are DONT CONNECT.  

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