AT49LV4096A Datasheet, PDF (1/16 Pages) ATMEL Corporation – 4-megabit (512K x 8/256K x 16) Single 2.7-volt Battery-Voltage Flash Memory

Features
• Single-voltage Read/Write Operation: 2.7V to 3.6V (BV), 3.0V to 3.6V (LV)
• 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 240K Word (480K Bytes) Main Memory Array Block
• Fast Sector Erase Time – 10 Seconds
• Byte-by-byte or Word-by-word Programming – 30 µs Typical
• Hardware Data Protection
• Data Polling for End of Program Detection
• Low Power Dissipation
– 25 mA Active Current
– 50 µA CMOS Standby Current
• Typical 10,000 Write Cycles
Description
The AT49BV/LV4096A is a 3-volt, 4-megabit Flash memory organized as 524,288
words of 8 bits each or 256K 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 67 mV at 2.7V read. When deselected, the CMOS standby
current is less than 50 µA.
The device contains a user-enabled “boot block” protection feature. The
AT49BV/LV4096A locates the boot block at lowest order addresses (“bottom boot”).
To allow for simple in-system reprogrammability, the AT49BV/LV4096A does not
require high input voltages for programming. Reading data out of the device is similar
to reading from an EPROM; it has standard CE, OE and WE inputs to avoid bus con-
tention. Reprogramming the AT49BV/LV4096A is performed by first erasing a block of
data and then programming on a byte-by-byte or word-by-word basis.
Pin Configurations
Pin Name
Function
A0 - A17
Addresses
CE
Chip Enable
OE
Output Enable
WE
Write Enable
RESET
Reset
VPP
VPP can be left unconnected or connected to VCC, GND, 5V or
12V. The input has no effect on the operation of the device.
I/O0 - I/O15
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
4-megabit
(512K x 8/
256K x 16)
Single 2.7-volt
Battery-Voltage^™
Flash Memory
AT49BV4096A
AT49LV4096A
Not Recommended
for New Design
Contact Atmel to discuss
the latest design in trends
and options
Rev. 1618H–FLASH–4/04
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