AT49F2048A Datasheet, PDF (1/13 Pages) ATMEL Corporation – 2-megabit 256K x 8/ 128K x 16 5-volt Only CMOS Flash Memory

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
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 Atmel’s
Pin Configurations
(continued)
Pin Name Function
A0 - A16
Addresses
CE
Chip Enable
OE
Output Enable
WE
Write Enable
RESET
Reset
I/O0 - I/O14 Data Inputs/Outputs
I/O15 (A-1)
I/O15 (Data Input/Output, Word Mode)
A-1 (LSB Address Input, Byte Mode)
BYTE
NC
Selects Byte or Word Mode
No Connect
SOIC (SOP)
NC 1
NC 2
NC 3
A7 4
A6 5
A5 6
A4 7
A3 8
A2 9
A1 10
A0 11
CE 12
GND 13
OE 14
I/O0 15
I/O8 16
I/O1 17
I/O9 18
I/O2 19
I/O10 20
I/O3 21
I/O11 22
44 RESET
43 WE
42 A8
41 A9
40 A10
39 A11
38 A12
37 A13
36 A14
35 A15
34 A16
33 BYTE
32 GND
31 I/O15/A-1
30 I/O7
29 I/O14
28 I/O6
27 I/O13
26 I/O5
25 I/O12
24 I/O4
23 VCC
A15
A14
A13
A12
A11
A10
A9
A8
NC
NC
WE
RESET
NC
NC
NC
NC
NC
A7
A6
A5
A4
A3
A2
A1
Note:
TSOP Top View
Type 1
1
48 A16
2
47 BYTE
3
46 GND
4
45 I/O15/A-1
5
44 I/O7
6
43 I/O14
7
42 I/O6
8
41 I/O13
9
40 I/O5
10
39 I/O12
11
38 I/O4
12
37 VCC
13
36 I/O11
14
35 I/O3
15
34 I/O10
16
33 I/O2
17
32 I/O9
18
31 I/O1
19
30 I/O8
20
29 I/O0
21
28 OE
22
27 GND
23
26 CE
24
25 A0
“•” denotes a white dot marked on
the package.
2-megabit
(256K x 8/
128K x 16)
5-volt Only
CMOS Flash
Memory
AT49F2048A
Rev. 1159F–04/01
1