1

SOIC (SOP)
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NC
NC
NC
A7
A6
A5
A4
A3
A2
A1
A0
CE
GND
OE
I/O0
I/O8
I/O1
I/O9
I/O2
I/O10
I/O3
I/O11
RESET
WE
A8
A9
A10
A11
A12
A13
A14
A15
A16
BYTE
GND
I/O15/A-1
I/O7
I/O14
I/O6
I/O13
I/O5
I/O12
I/O4
VCC
TSOP Top View
Type 1
Note: “ ” denotes a white dot marked on
the package.
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A15
A14
A13
A12
A11
A10
A9
A8
NC
NC
WE
RESET
NC
NC
NC
NC
NC
A7
A6
A5
A4
A3
A2
A1
A16
BYTE
GND
I/O15/A-1
I/O7
I/O14
I/O6
I/O13
I/O5
I/O12
I/O4
VCC
I/O11
I/O3
I/O10
I/O2
I/O9
I/O1
I/O8
I/O0
OE
GND
CE
A0
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
2-megabit
(256K x 8/
128K x 16)
5-volt Only
CMOS Flash
Memory
AT49F2048A
Rev. 1159F–04/01
(continued)
Pin Configurations
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 Selects Byte or Word Mode
NC No Connect