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AT49F8192
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Part Number: AT49F8192

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Description: The AT49F8192 is a 5-volt-only, 8 megabit Flash Memory organized as 512K words of 16 bits each. Manufactured with Atmel...

AT49F8192 General Description

The AT49F8192 is a 5-volt-only, 8 megabit Flash Memory organized as 512K words of 16 bits each. Manufactured with Atmel's advanced nonvolatile CMOS technology, the device offers access times to 90 ns with power dissipation of just 275 mW. When deselected, the CMOS standby current is less than 300 A.

The device contains a user-enabled "boot block" protection feature. Two versions of the feature are available: the AT49F8192 locates the boot block at lowest order addresses ("bottom boot"); the AT49F8192T locates it at highest order addresses ("top boot").

To allow for simple in-system reprogrammability, the AT49F8192 does not require high input voltages for programming. Five-volt-only commands determine the read and programming operation of the device. Reading data out of the device is similar to reading from an EPROM; it has standard CE, OE, and WE inputs to avoid bus contention. Reprogramming the AT49F8192 is performed by first erasing a block of data and then programming on a wordby- word basis.

The device is erased by executing the erase command sequence; the device internally controls the erase operation. The memory is divided into three blocks for erase operations. There are two 8K word parameter block sections and one sector consisting of the boot block and the main memory array block. The AT49F8192 is programmed on a word-by-word basis. The device has the capability to protect the data in the boot block; this feature is enabled by a command sequence. Once the boot block programming lockout feature is enabled, the data in the boot block cannot be changed when input levels of 5.5 volts or less are used. 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 lock out feature 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 reprogrammed.

AT49F8192 Maximum Ratings

Temperature Under Bias................................ -55°C to +125°C
Storage Temperature ..................................... -65°C to +150°C
All Input Voltages (including NC pins)
with Respect to Ground ...................................-0.6V to +6.25V
All Output Voltages
with Respect to Ground ......................... -0.6V to V_CC to +0.6V
Voltage on OE
with Respect to Ground ...................................-0.6V to +13.5V

*NOTICE: Stresses beyong those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

AT49F8192 Features

• Single Voltage Operation
5V Read
5V Reprogramming
• Fast Read Access Time - 90 ns
• Internal Erase/Program Control
• Sector Architecture
One 8K Words (16K bytes) Boot Block with Programming Lockout
Two 8K Words (16K bytes) Parameter Blocks
One 488K Words (976K bytes) Main Memory Array Block
• Fast Sector Erase Time - 10 seconds
• Word-By-Word Programming - 50 ms/Word
• Hardware Data Protection
• DATA Polling For End Of Program Detection
• Low Power Dissipation
50 mA Active Current
300 A CMOS Standby Current
• Typical 10,000 Write Cycles

AT49F8192 Connection Diagram

AT49F8192 datasheet

AT49F8192
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Datasheet: AT49F8192
File Size: 247406 KB
Manufacturer: ATMEL [ATMEL Corporation]
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