AT29C040A90PI ATMEL Corporation, AT29C040A90PI Datasheet
AT29C040A90PI
Manufacturer Part Number
AT29C040A90PI
Description
DIP32
Manufacturer
ATMEL Corporation
Datasheet
1.AT29C040A10PC.pdf
(17 pages)
Specifications of AT29C040A90PI
Date_code
05+
Features
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Description
The AT29C040A is a 5-volt only in-system Flash Programmable and Erasable Read
Only Memory (PEROM). Its 4 megabits of memory is organized as 524,288 words by
8 bits. Manufactured with Atmel’s advanced nonvolatile CMOS EEPROM technology,
the device offers access times up to 90 ns, and a low 220 mW power dissipation.
When the device is deselected, the CMOS standby current is less than 100 µA. The
device endurance is such that any sector can typically be written to in excess of
10,000 times. The programming algorithm is compatible with other devices in Atmel’s
5-volt only Flash family.
Pin Configurations
Pin Name
A0 - A18
CE
OE
WE
I/O0 - I/O7
NC
Fast Read Access Time – 90 ns
5-volt Only Reprogramming
Sector Program Operation
Internal Program Control and Timer
Hardware and Software Data Protection
Two 16K Bytes Boot Blocks with Lockout
Fast Sector Program Cycle Time – 10 ms
DATA Polling for End of Program Detection
Low Power Dissipation
Typical Endurance > 10,000 Cycles
Single 5V ± 10% Supply
CMOS and TTL Compatible Inputs and Outputs
– Single Cycle Reprogram (Erase and Program)
– 2048 Sectors (256 Bytes/Sector)
– Internal Address and Data Latches for 256 Bytes
– 40 mA Active Current
– 100 µA CMOS Standby Current
GND
I/O0
I/O1
I/O2
A18
A16
A15
A12
DIP Top View
A7
A6
A5
A4
A3
A2
A1
A0
Function
Addresses
Chip Enable
Output Enable
Write Enable
Data Inputs/Outputs
No Connect
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
VCC
WE
A17
A14
A13
A8
A9
A11
OE
A10
CE
I/O7
I/O6
I/O5
I/O4
I/O3
VCC
A11
A13
A14
A17
A18
A16
A15
A12
WE
A9
A8
A7
A6
A5
A4
TSOP Top View – Type 1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
I/O0
A7
A6
A5
A4
A3
A2
A1
A0
PLCC Top View
5
6
7
8
9
10
11
12
13
29
28
27
26
25
24
23
22
21
A14
A13
A8
A9
A11
OE
A10
CE
I/O7
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
OE
A10
CE
I/O7
I/O6
I/O5
I/O4
I/O3
GND
I/O2
I/O1
I/O0
A0
A1
A2
A3
4-megabit
(512K x 8)
5-volt Only
256-byte Sector
Flash Memory
AT29C040A
Rev. 0333I–FLASH–05/02
1
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