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AT49LV1024A Datasheet(PDF) 1 Page - ATMEL Corporation |
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AT49LV1024A Datasheet(HTML) 1 Page - ATMEL Corporation |
1 / 14 page ![]() 1 Features • Single-voltage Operation Read/Write Operation: 2.7V to 3.6V (BV). 3.0V to 3.6V(LV) • Fast Read Access Time – 45 ns • Internal Program Control and Timer • 8K Word Boot Block with Lockout • Fast Erase Cycle Time – 1.5 Seconds • Word-by-word Programming – 20 µs/Word Typical • Hardware Data Protection • Data Polling for End of Program Detection • Small 10 x 14 mm VSOP Package • Typical 10,000 Write Cycles Description The AT49BV/LV1024A is a 3-volt only in-system Flash memory. The 1-megabit of memory is organized as 65,536 words by 16 bits. Manufactured with Atmel’s advanced nonvolatile CMOS technology, the devices offer access times to 45 ns with power dissipation of just 72 mW over the industrial temperature range. To allow for simple in-system reprogrammability, the AT49BV/LV1024A does not require high input voltages for programming. Three-volt-only commands determine the read and programming operation of the device. Reading data out of the device is simi- lar to reading from an EPROM. Reprogramming the AT49BV/LV1024A is performed by erasing a block of data (entire chip or main memory block) and then programming on a word by word basis. The typical word programming time is a fast 20 µs. The end of a program cycle can be optionally detected by the Data Polling feature. Once the end of a word program cycle has been detected, a new access for a read or program can begin. 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 write lock out fea- ture 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 erased or reprogrammed. 1-megabit (64K x 16) 3-volt Only Flash Memory AT49BV1024A AT49LV1024A Pin Configurations Pin Name Function A0 - A15 Addresses CE Chip Enable OE Output Enable WE Write Enable I/O0 - I/O15 Data Inputs/Outputs NC No Connect AT49BV/LV1024A VSOP Top View Type 1 10 x 14 mm 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 A9 A10 A11 A12 A13 A14 A15 NC WE VCC NC CE I/O15 I/O14 I/O13 I/O12 I/O11 I/O10 I/O9 I/O8 GND A8 A7 A6 A5 A4 A3 A2 A1 A0 OE I/O0 I/O1 I/O2 I/O3 I/O4 I/O5 I/O6 I/O7 GND Rev. 3332B–FLASH–12/03 |
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