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AT45DB321D Scheda tecnica(PDF) 1 Page - ATMEL Corporation |
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AT45DB321D Scheda tecnica(HTML) 1 Page - ATMEL Corporation |
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1 / 57 page  Features • Single 2.7V - 3.6V Supply • RapidS Serial Interface: 66 MHz Maximum Clock Frequency – SPI Compatible Modes 0 and 3 • User Configurable Page Size – 512 Bytes per Page – 528 Bytes per Page – Page Size Can Be Factory Pre-configured for 512 Bytes • Page Program Operation – Intelligent Programming Operation – 8,192 Pages (512/528 Bytes/Page) Main Memory • Flexible Erase Options – Page Erase (512 Bytes) – Block Erase (4 Kbytes) – Sector Erase (64 Kbytes) – Chip Erase (32 Mbits) • Two SRAM Data Buffers (512/528 Bytes) – Allows Receiving of Data while Reprogramming the Flash Array • Continuous Read Capability through Entire Array – Ideal for Code Shadowing Applications • Low-power Dissipation – 7 mA Active Read Current Typical – 25 µA Standby Current Typical – 15 µA Deep Power Down Typical • Hardware and Software Data Protection Features – Individual Sector • Sector Lockdown for Secure Code and Data Storage – Individual Sector • Security: 128-byte Security Register – 64-byte User Programmable Space – Unique 64-byte Device Identifier • JEDEC Standard Manufacturer and Device ID Read • 100,000 Program/Erase Cycles Per Page Minimum • Data Retention – 20 Years • Industrial Temperature Range • Green (Pb/Halide-free/RoHS Compliant) Packaging Options 1. Description The AT45DB321D is a 2.7-volt, serial-interface sequential access Flash memory ideally suited for a wide variety of digital voice-, image-, program code- and data-stor- age applications. The AT45DB321D supports RapidS serial interface for applications requiring very high speed operations. RapidS serial interface is SPI compatible for frequencies up to 66 MHz. Its 34,603,008 bits of memory are organized as 8,192 pages of 512 bytes or 528 bytes each. In addition to the main memory, the AT45DB321D also contains two SRAM buffers of 512/528 bytes each. The buffers allow the receiving of data while a page in the main Memory is being reprogrammed, as well as writing a continuous data stream. EEPROM emulation (bit or byte alterabil- ity) is easily handled with a self-contained three step read-modify-write operation. Unlike conventional Flash memories that are accessed randomly with multiple address lines and a parallel interface, the DataFlash uses a RapidS serial interface to 32-megabit 2.7-volt DataFlash® AT45DB321D 3597N–DFLASH–04/09 |
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