AT45DB321D-SU-SL954 ATMEL [ATMEL Corporation], AT45DB321D-SU-SL954 Datasheet

AT45DB321D-SU-SL954

Manufacturer Part Number

AT45DB321D-SU-SL954

Description

32-megabit 2.7-volt DataFlash

Manufacturer

ATMEL [ATMEL Corporation]

Datasheet

1.AT45DB321D-SU-SL954.pdf (57 pages)

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Features

•

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

Single 2.7V - 3.6V Supply

RapidS Serial Interface: 66 MHz Maximum Clock Frequency

User Configurable Page Size

Page Program Operation

Flexible Erase Options

Two SRAM Data Buffers (512/528 Bytes)

Continuous Read Capability through Entire Array

Low-power Dissipation

Hardware and Software Data Protection Features

Sector Lockdown for Secure Code and Data Storage

Security: 128-byte Security Register

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

– SPI Compatible Modes 0 and 3

– 512 Bytes per Page

– 528 Bytes per Page

– Page Size Can Be Factory Pre-configured for 512 Bytes

– Intelligent Programming Operation

– 8,192 Pages (512/528 Bytes/Page) Main Memory

– Page Erase (512 Bytes)

– Block Erase (4 Kbytes)

– Sector Erase (64 Kbytes)

– Chip Erase (32 Mbits)

– Allows Receiving of Data while Reprogramming the Flash Array

– Ideal for Code Shadowing Applications

– 7 mA Active Read Current Typical

– 25 µA Standby Current Typical

– 15 µA Deep Power Down Typical

– Individual Sector

– 64-byte User Programmable Space

– Unique 64-byte Device Identifier

32-megabit

2.7-volt

DataFlash

AT45DB321D

3597N–DFLASH–04/09

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