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AT49F2048A PDF预览

AT49F2048A

更新时间: 2024-11-07 22:56:39
品牌 Logo 应用领域
爱特美尔 - ATMEL 闪存
页数 文件大小 规格书
13页 266K
描述
2-megabit 256K x 8/ 128K x 16 5-volt Only CMOS Flash Memory

AT49F2048A 数据手册

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Features  
Single-voltage Operation  
– 5V Read  
– 5V Reprogramming  
Fast Read Access Time – 70 ns  
Internal Erase/Program Control  
Sector Architecture  
– One 8K Word (16K Bytes) Boot Block with Programming Lockout  
– Two 4K Word (8K Bytes) Parameter Blocks  
– One 112K Word (224K bytes) Main Memory Array Block  
Fast Sector Erase Time – 10 seconds  
Byte-by-byte or Word-by-word Programming – 50 µs  
Hardware Data Protection  
Data Polling for End of Program Detection  
Low Power Dissipation  
– 50 mA Active Current  
– 100 µA CMOS Standby Current  
Typical 10,000 Write Cycles  
2-megabit  
(256K x 8/  
128K x 16)  
5-volt Only  
CMOS Flash  
Memory  
Description  
The AT49F2048A is a 5-volt-only, 2-megabit Flash memory organized as 262,144  
words of 8 bits each or 128K words of 16 bits each. Manufactured with Atmels  
(continued)  
Pin Configurations  
AT49F2048A  
Pin Name  
A0 - A16  
CE  
Function  
Addresses  
Chip Enable  
Output Enable  
Write Enable  
Reset  
OE  
WE  
RESET  
I/O0 - I/O14 Data Inputs/Outputs  
I/O15 (Data Input/Output, Word Mode)  
TSOP Top View  
I/O15 (A-1)  
A-1 (LSB Address Input, Byte Mode)  
Selects Byte or Word Mode  
No Connect  
Type 1  
BYTE  
NC  
A15  
A14  
A13  
A12  
A11  
A10  
A9  
1
48  
47  
46  
45  
44  
43  
42  
41  
40  
39  
38  
37  
36  
35  
34  
33  
32  
31  
30  
29  
28  
27  
26  
25  
A16  
2
BYTE  
GND  
I/O15/A-1  
I/O7  
3
SOIC (SOP)  
4
5
6
I/O14  
I/O6  
NC  
NC  
1
44  
43  
42  
41  
40  
39  
38  
37  
36  
35  
34  
33  
32  
31  
30  
29  
28  
27  
26  
25  
24  
23  
RESET  
WE  
7
2
A8  
8
I/O13  
I/O5  
NC  
3
A8  
NC  
9
A7  
4
A9  
NC  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
I/O12  
I/O4  
A6  
5
A10  
WE  
RESET  
NC  
A5  
6
A11  
VCC  
I/O11  
I/O3  
A4  
7
A12  
NC  
A3  
8
A13  
NC  
I/O10  
I/O2  
A2  
9
A14  
NC  
A1  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
A15  
NC  
I/O9  
A0  
A16  
A7  
I/O1  
CE  
BYTE  
GND  
I/O15/A-1  
I/O7  
A6  
I/O8  
GND  
OE  
A5  
I/O0  
A4  
OE  
I/O0  
I/O8  
I/O1  
I/O9  
I/O2  
I/O10  
I/O3  
I/O11  
A3  
GND  
CE  
I/O14  
I/O6  
A2  
A1  
A0  
I/O13  
I/O5  
Rev. 1159F04/01  
I/O12  
I/O4  
Note:  
“•” denotes a white dot marked on  
the package.  
VCC  

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