1
SOIC (SOP)
TSOP Top View
Type 1
Features
• Single Voltage Operation
– 5V Read
– 5V Reprogramming
• Fast Read Access Time - 70 ns
• Internal Erase/Program Control
• Sector Architecture
– One 8K Words (16K bytes) Boot Block with Programming Lockout
– Two 8K Words (16K bytes) Parameter Blocks
– One 104K Words (208K bytes) Main Memory Array Block
• Fast Sector Erase Time - 10 seconds
• Word-By-Word Programming - 50 µs/Word
• Hardware Data Protection
• DATA Polling For End Of Program Detection
• Low Power Dissipation
– 50 mA Active Current
– 300 µA CMOS Standby Current
• Typical 10,000 Write Cycles
Description
The AT49F2048 is a 5-volt-only, 2 megabit Flash Memory organized as 128K words
of 16 bits each. Manufactured with Atmel's advanced nonvolatile CMOS technology,
the device offers access times to 70 ns with power dissipation of just 275 mW. When
deselected, the CMOS standby current is less than 300 µA.
To allow for simple in-system reprogrammability, the AT49F2048 does not require
high input voltages for programming. Five-volt-only commands determine the read
and programming operation of the device. Reading data out of the device is similar to
2-Megabit
(128K x 16)
5-volt Only
CMOS Flash
Memory
AT49F2048
0568D-A–9/97
(continued)
Pin Configurations
Pin Name Function
A0 - A16 Addresses
CE Chip Enable
OE Output Enable
WE Write Enable
RESET Reset
I/O0 - I/O15
Data
Inputs/Outputs
NC No Connect