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Atmel Electronic Components Datasheet

AT29LV020 Datasheet

2-megabit (256K x 8) 3-volt Only Flash Memory

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Features
Single Voltage, Range 3V to 3.6V Supply
3-volt Only Read and Write Operation
Software Protected Programming
Fast Read Access Time – 100 ns
Low Power Dissipation
– 15 mA Active Current
– 50 µA CMOS Standby Current
Sector Program Operation
– Single Cycle Reprogram (Erase and Program)
– 1024 Sectors (256 Bytes/Sector)
– Internal Address and Data Latches for 256 Bytes
Two 8K Bytes Boot Blocks with Lockout
Fast Sector Program Cycle Time – 20 ms
Internal Program Control and Timer
DATA Polling for End of Program Detection
Typical Endurance > 10,000 Cycles
CMOS and TTL Compatible Inputs and Outputs
Green (Pb/Halide-free) Packaging Option
2-megabit
(256K x 8)
3-volt Only
Flash Memory
AT29LV020
1. Description
The AT29LV020 is a 3-volt-only in-system Flash programmable and erasable read
only memory (PEROM). Its 2 megabits of memory is organized as 262,144 bytes by
8 bits. Manufactured with Atmel’s advanced nonvolatile CMOS technology, the device
offers access times to 100 ns with power dissipation of just 54 mW over the industrial
temperature range. When the device is deselected, the CMOS standby current is less
than 50 µA. The device endurance is such that any sector can typically be written to in
excess of 10,000 times.
To allow for simple in-system reprogrammability, the AT29LV020 does not require
high input voltages for programming. Five-volt-only commands determine the opera-
tion of the device. Reading data out of the device is similar to reading from an
EPROM. Reprogramming the AT29LV020 is performed on a sector basis; 256 bytes
of data are loaded into the device and then simultaneously programmed.
During a reprogram cycle, the address locations and 256 bytes of data are captured at
microprocessor speed and internally latched, freeing the address and data bus for
other operations. Following the initiation of a program cycle, the device will automati-
cally erase the sector and then program the latched data using an internal control
timer. The end of a program cycle can be detected by DATA polling of I/O7. Once the
end of a program cycle has been detected, a new access for a read or program can
begin.
0565E–FLASH–9/08
Datasheet pdf - http://www.DataSheet4U.net/


Atmel Electronic Components Datasheet

AT29LV020 Datasheet

2-megabit (256K x 8) 3-volt Only Flash Memory

No Preview Available !

www.DataSheet.co.kr
2. Pin Configurations
Pin Name
A0 - A17
CE
OE
WE
I/O0 - I/O7
NC
2.1 32-lead PLCC Top View
Function
Addresses
Chip Enable
Output Enable
Write Enable
Data Inputs/Outputs
No Connect
A7 5
A6 6
A5 7
A4 8
A3 9
A2 10
A1 11
A0 12
I/O0 13
2.2 32-lead TSOP (Type 1) Top View
A11
A9
A8
A13
A14
A17
WE
VCC
NC
A16
A15
A12
A7
A6
A5
A4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
29 A14
28 A13
27 A8
26 A9
25 A11
24 OE
23 A10
22 CE
21 I/O7
32 OE
31 A10
30 CE
29 I/O7
28 I/O6
27 I/O5
26 I/O4
25 I/O3
24 GND
23 I/O2
22 I/O1
21 I/O0
20 A0
19 A1
18 A2
17 A3
2 AT29LV020
0565E–FLASH–9/08
Datasheet pdf - http://www.DataSheet4U.net/


Part Number AT29LV020
Description 2-megabit (256K x 8) 3-volt Only Flash Memory
Maker ATMEL Corporation
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AT29LV020 Datasheet PDF






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1 AT29LV020 2-megabit (256K x 8) 3-volt Only Flash Memory
ATMEL Corporation





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