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AT49F4096A-55TC Datasheet(PDF) 1 Page - ATMEL Corporation |
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AT49F4096A-55TC Datasheet(HTML) 1 Page - ATMEL Corporation |
1 / 15 page 1 Features • Single Voltage Operation –5V Read – 5V Programming • Fast Read Access Time - 55 ns • Internal Erase/Program Control • Sector Architecture – One 8K Words (16K bytes) Boot Block with Programming Lockout – Two 4K Words (8K bytes) Parameter Blocks – One 240K Words (480K bytes) Main Memory Array Block • Fast Sector Erase Time - 10 seconds • Byte-by-Byte or Word-By-Word Programming - 10 µs Typical • Hardware Data Protection • DATA Polling For End Of Program Detection • Low-Power Dissipation – 50 mA Active Current – 300 µA CMOS Standby Current • Typical 10,000 Write Cycles Description The AT49F004(T) and AT49F4096A(T) are 5-volt, 4-megabit Flash Memories orga- nized as 524,288 words of 8 bits each or 256K words of 16 bits each. Manufactured with Atmel’s advanced nonvolatile CMOS technology, the devices offer access times to 55 ns with power dissipation of just 275 mW. When deselected, the CMOS standby current is less than 300 µA. The device contains a user-enabled “boot block” protection feature. Two versions of the feature are available: the AT49F004/4096A locates the boot block at lowest order addresses (“bottom boot”); the AT49F004T/4096AT locates it at highest order addresses (“top boot”). To allow for simple in-system reprogrammability, the AT49F004(T)/4096A(T) does not require high input voltages for programming. Reading data out of the device is similar to reading from an EPROM; it has standard CE, OE, and WE inputs to avoid bus con- tention. Reprogramming the AT49F004(T)/4096A(T) is performed by first erasing a 4-Megabit (512K x 8/ 256K x 16) CMOS Flash Memory AT49F004 AT49F004T AT49F4096A AT49F4096AT Preliminary Rev. 1167A–09/98 Pin Configurations Pin Name Function A0 - A18 Addresses CE Chip Enable OE Output Enable WE Write Enable RESET Reset RDY/BUSY Ready/Busy Output I/O0 - I/O14 Data Inputs/Outputs I/O15(A-1) I/O15 (Data Input/Output, Word Mode) A-1 (LSB Address Input, Byte Mode) BYTE Selects Byte or Word Mode NC No Connect (continued) |
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