AT45DB321D-MWU-SL955 32Mbit,SPI接口DateFlash存储器VDFN-8封装

Density 32M
I/O Pins 8, 28
Interface Type SPI, RapidS
Page Size (Bytes) 528
Vcc (V) 2.7
Pb-Free Packages TSOP 28
MLF (VDFN) 8
SOIC (208mil) 8
MLF (VDFN) 8

32M bit, 2.7-Volt Only Serial Interface Flash

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-storage 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 alterability) 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 sequentially access its data. The simple sequential access dramatically reduces active pin count, facilitates hardware layout, increases system reliability, minimizes switching noise, and reduces package size. The device is optimized for use in many commercial and industrial applications where high-density, low-pin count, low-voltage and low-power are essential. To allow for simple in-system reprogrammability, the AT45DB321D does not require high input voltages for programming. The device operates from a single power supply, 2.7V to 3.6V, for both the program and read operations. The AT45DB321D is enabled through the chip select pin (CS) and accessed via a three-wire interface consisting of the Serial Input (SI), Serial Output (SO), and the Serial Clock (SCK).All programming and erase cycles are self-timed.

AT45DB321D-MWU-SL955 特性
AT45DB321D-MWU-SL955 订购型号
Ordering Code Package Lead Finish Operating Voltage Max. Freq.
(MHz)
Operation Range
AT45DB321D-MU
AT45DB321D-MU-SL954
AT45DB321D-MU-SL955
8M1-A Matte Sn 2.7V to 3.6V 66 Industrial (-40°C to +85°C)
AT45DB321D-MWU
AT45DB321D-MWU-SL954
AT45DB321D-MWU-SL955
8MW
AT45DB321D-SU
AT45DB321D-SU-SL954
AT45DB321D-SU-SL955
8S2
AT45DB321D-TU 28T
AT45DB321D-MWU-SL955 应用技术支持与电子电路设计开发资源下载
  1. ATMEL 爱特梅尔Flash 存储器AT45DB321D 数据手册DataSheet 下载. PDF(PDF 文件格式完整版)
  2. 串行Flash 产品选型指南(Excel 文档格式)
  3. ATMEL 爱特梅尔公司全线产品目录. pdf
  4. Programmer Support for Serial Flash Devices. pdf (Other, 8 pages, revision C, updated 4/08)
  5. MicroLeadFrame Packages Pad Landing Recommendations (15 pages, revision B, updated 09/06). pdf
    This application note provides PCB designers with a set of guidelines for successful board mounting of Atmel's DataFlash memories housed in the MicroLeadFrame (MLF) package.
  6. AN-4: Using Atmel's DataFlash (30 pages, updated 11/02) . pdf
    Atmel's DataFlash is a new Flash family designed specifically for data storage applications. This Application Note describes this family.
  7. DataFlash Binary Page Size (2 pages, revision A, updated 5/08) . pdf
    Factory Configured DataFlash Binary Page Size options