AT49LV1024A Datasheet, PDF (1/14 Pages) ATMEL Corporation – 1-megabit (64K x 16) 3-volt Only Flash Memory

Features
• Single-voltage Operation Read/Write Operation: 2.7V to 3.6V (BV). 3.0V to 3.6V(LV)
• Fast Read Access Time – 45 ns
• Internal Program Control and Timer
• 8K Word Boot Block with Lockout
• Fast Erase Cycle Time – 1.5 Seconds
• Word-by-word Programming – 20 µs/Word Typical
• Hardware Data Protection
• Data Polling for End of Program Detection
• Small 10 x 14 mm VSOP Package
• Typical 10,000 Write Cycles
Description
The AT49BV/LV1024A is a 3-volt only in-system Flash memory. The 1-megabit of
memory is organized as 65,536 words by 16 bits. Manufactured with Atmel’s
advanced nonvolatile CMOS technology, the devices offer access times to 45 ns with
power dissipation of just 72 mW over the industrial temperature range.
To allow for simple in-system reprogrammability, the AT49BV/LV1024A does not
require high input voltages for programming. Three-volt-only commands determine the
read and programming operation of the device. Reading data out of the device is simi-
lar to reading from an EPROM. Reprogramming the AT49BV/LV1024A is performed
by erasing a block of data (entire chip or main memory block) and then programming
on a word by word basis. The typical word programming time is a fast 20 µs. The end
of a program cycle can be optionally detected by the Data Polling feature. Once the
end of a word program cycle has been detected, a new access for a read or program
can begin. The typical number of program and erase cycles is in excess of 10,000
cycles.
The optional 8K word boot block section includes a reprogramming write lock out fea-
ture to provide data integrity. The boot sector is designed to contain user secure code,
and when the feature is enabled, the boot sector is permanently protected from being
erased or reprogrammed.
1-megabit
(64K x 16)
3-volt Only
Flash Memory
AT49BV1024A
AT49LV1024A
Pin Configurations
Pin Name
A0 - A15
CE
OE
WE
I/O0 - I/O15
NC
Function
Addresses
Chip Enable
Output Enable
Write Enable
Data Inputs/Outputs
No Connect
AT49BV/LV1024A VSOP Top View
Type 1
10 x 14 mm
A9 1
A10 2
A11 3
A12 4
A13 5
A14 6
A15 7
NC 8
WE 9
VCC 10
NC 11
CE 12
I/O15 13
I/O14 14
I/O13 15
I/O12 16
I/O11 17
I/O10 18
I/O9 19
I/O8 20
40 GND
39 A8
38 A7
37 A6
36 A5
35 A4
34 A3
33 A2
32 A1
31 A0
30 OE
29 I/O0
28 I/O1
27 I/O2
26 I/O3
25 I/O4
24 I/O5
23 I/O6
22 I/O7
21 GND
Rev. 3332B–FLASH–12/03
1