AT29C040A-90PI

Series: -
Operating Temperature: -40°C ~ 85°C
Voltage - Supply: 4.5 V ~ 5.5 V
Packaging: Tube
Format - Memory: FLASH
Memory Type: FLASH
Memory Size: 4M (512K x 8)
Interface: Parallel
Speed: 90ns
Manufacturer: Atmel
Package / Case: 32-DIP (0.600", 15.24mm)
Supplier Device Package: 32-DIP


Pinout




Description

The AT29C040A-90PI is one member of the AT29C040A series.It has the following features including (1)5-volt only reprogramming;(2)internal program control and timer;(3)hardware and software data protection;(4)two 16K bytes boot blocks with lockout;(5)fast sector program cycle time is 10 ms.

The AT29C040A is a 5-volt only in-system Flash Programmable and Erasable Read Only Memory (PEROM). AT29C040A-90PI 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 A. 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.To allow for simple in-system reprogrammability, the AT29C040A does not require high input voltages for programming. Five-volt-only commands determine the operation of the device. Reading data out of the device is similar to reading from an EPROM. Reprogramming the AT29C040A is performed on a sector basis; 256 bytes of data are loaded into the device and then simultaneously programmed.

The software protection feature may be enabled or disabled by the user; when shipped from Atmel, the software data protection feature is disabled. To enable the software data protection, a series of three program commands to specific addresses with specific data must be performed. After the software data protection of AT29C040A-90PI is enabled the same three program commands must begin each program cycle in order for the programs to occur. All software program commands must obey the sector program timing specifications. The SDP feature protects all sectors, not just a single sector. Once set, the software data protection feature of AT29C040A-90PI remains active unless its disable command is issued. Power transitions will not reset the software data protection feature, however the software feature of AT29C040A-90PI will guard against inadvertent program cycles during power transitions.

Parameters:

Technical/Catalog Information	AT29C040A-90PI
Vendor	Atmel
Category	Integrated Circuits (ICs)
Memory Type	FLASH
Memory Size	4M (512K x 8)
Speed	90ns
Interface	Parallel
Package / Case	32-DIP
Packaging	Tube
Voltage - Supply	4.5 V ~ 5.5 V
Operating Temperature	-40°C ~ 85°C
Format - Memory	FLASH
Drawing Number	*
Lead Free Status	Contains Lead
RoHS Status	RoHS Non-Compliant
Other Names	AT29C040A 90PI AT29C040A90PI