- 您現(xiàn)在的位置：買賣IC網 > PDF目錄381453 > AT45DB021B-SU (ATMEL CORP) 2-megabit 2.7-volt Only DataFlash PDF資料下載
參數資料
| 型號： | AT45DB021B-SU |
| 廠商： | ATMEL CORP |
| 元件分類： | DRAM |
| 英文描述： | 2-megabit 2.7-volt Only DataFlash |
| 中文描述： | 2M X 1 FLASH 2.7V PROM, PDSO8 |
| 封裝： | 0.209 INCH, GREEN, PLASTIC, EIAJ, SOIC-8 |
| 文件頁數： | 1/32頁 |
| 文件大?。?/td> | 304K |
| 代理商： | AT45DB021B-SU |
當前第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁
Features
Single 2.7V - 3.6V Supply
Serial Peripheral Interface (SPI) Compatible
20 MHz Max Clock Frequency
Page Program Operation
– Single Cycle Reprogram (Erase and Program)
– 1024 Pages (264 Bytes/Page) Main Memory
Supports Page and Block Erase Operations
Two 264-byte SRAM Data Buffers – Allows Receiving of Data
while Reprogramming of Nonvolatile Memory
Continuous Read Capability through Entire Array
– Ideal for Code Shadowing Applications
Low Power Dissipation
– 4 mA Active Read Current Typical
– 2 μA CMOS Standby Current Typical
Hardware Data Protection Feature
100% Compatible to AT45DB021 and AT45DB021A
5.0V-tolerant Inputs: SI, SCK, CS, RESET and WP Pins
Commercial and Industrial Temperature Ranges
Green (Pb/Halide-free/RoHS Compliant) Packaging Options
1.
The AT45DB021B is a 2.7-volt only, serial interface Flash memory ideally suited for
a wide variety of digital voice-, image-, program code- and data-storage applications.
Its 2,162,688 bits of memory are organized as 1024 pages of 264 bytes each. In addi-
tion to the main memory, the AT45DB021B also contains two SRAM data buffers
of 264 bytes each. The buffers allow receiving of data while a page in the main mem-
ory is being reprogrammed, as well as reading or writing a continuous data stream.
Description
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 inter-
face, the DataFlash uses a SPI serial interface to sequentially access its data.
DataFlash supports SPI mode 0 and mode 3. The simple serial interface facilitates
hardware layout, increases system reliability, minimizes switching noise, and reduces
package size and active pin count. The device is optimized for use in many commer-
cial and industrial applications where high density, low pin count, low voltage, and low
power are essential. The device operates at clock frequencies up to 20 MHz with a
typical active read current consumption of 4 mA.
To allow for simple in-system reprogrammability, the AT45DB021B 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 AT45DB021B 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 cycles are self-timed, and no separate erase cycle is required before
programming.
When the device is shipped from Atmel, the most significant page of the memory
array may not be erased. In other words, the contents of the last page may not be
filled with FFH.
2-megabit
2.7-volt Only
DataFlash
AT45DB021B
1937J–DFLSH–9/05
相關PDF資料 |
PDF描述 |
|---|---|
| AT45DB021B-TU | 2-megabit 2.7-volt Only DataFlash |
| AT45DB021B-SC | 2-megabit 2.7-volt Only DataFlash?? |
| AT45DB021B-CC | 2-megabit 2.7-volt Only DataFlash?? |
| AT45DB021B-CI | 2-megabit 2.7-volt Only DataFlash?? |
| AT45DB021B-RC | 2-megabit 2.7-volt Only DataFlash?? |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AT45DB021B-TC | 功能描述:閃存 2M bit RoHS:否 制造商:ON Semiconductor 數據總線寬度:1 bit 存儲類型:Flash 存儲容量:2 MB 結構:256 K x 8 定時類型: 接口類型:SPI 訪問時間: 電源電壓-最大:3.6 V 電源電壓-最小:2.3 V 最大工作電流:15 mA 工作溫度:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體: 封裝:Reel |
| AT45DB021BTI | 制造商:Atmel Corporation 功能描述: |
| AT45DB021B-TI | 功能描述:閃存 2M 2.7V RoHS:否 制造商:ON Semiconductor 數據總線寬度:1 bit 存儲類型:Flash 存儲容量:2 MB 結構:256 K x 8 定時類型: 接口類型:SPI 訪問時間: 電源電壓-最大:3.6 V 電源電壓-最小:2.3 V 最大工作電流:15 mA 工作溫度:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體: 封裝:Reel |
| AT45DB021BTU | 制造商:Atmel Corporation 功能描述: |
| AT45DB021B-TU | 功能描述:閃存 DATAFLASH 2M SERIAL 2.7V IND TEMP GREEN RoHS:否 制造商:ON Semiconductor 數據總線寬度:1 bit 存儲類型:Flash 存儲容量:2 MB 結構:256 K x 8 定時類型: 接口類型:SPI 訪問時間: 電源電壓-最大:3.6 V 電源電壓-最小:2.3 V 最大工作電流:15 mA 工作溫度:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體: 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復。