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參數(shù)資料
| 型號： | AT45BR3214B-C1 |
| 廠商： | ATMEL CORP |
| 元件分類： | 存儲器 |
| 英文描述： | 32-MEGABIT DATAFLASH + 4-MEGABIT SRAM STACK MEMORY |
| 中文描述： | SPECIALTY MEMORY CIRCUIT, PBGA62 |
| 封裝： | 12 X 8 MM, 1.20 MM HEIGHT, 0.80 MM PITCH, PLASTIC, CBGA-62 |
| 文件頁數(shù)： | 4/40頁 |
| 文件大?。?/td> | 488K |
| 代理商： | AT45BR3214B-C1 |
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AT45BR3214B
3356B–DFLASH–10/04
32-Mbit DataFlash
Description
The 32-Mbit DataFlash 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 34,603,008 bits of memory are organized as 8192 pages of 528 bytes each. In addi-
tion to the main memory, the 32-Mbit DataFlash also contains two SRAM data buffers of
528 bytes each. The buffers allow receiving of data while a page in the main memory is
being reprogrammed, as well as reading or 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 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 reli-
ability, minimizes switching noise, and reduces package size and active pin count. 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. 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 32-Mbit DataFlash does not
require high input voltages for programming. The device operates from a single power
supply, 2.7V to 3.3V, for both the program and read operations. The 32-Mbit DataFlash
is enabled through the chip select pin (CS) and accessed via a three-wire interface con-
sisting 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.
DataFlash
Block Diagram
Memory Array
To provide optimal flexibility, the memory array of the 32-Mbit DataFlash is divided into
three levels of granularity comprising of sectors, blocks, and pages. The Memory Archi-
tecture Diagram illustrates the breakdown of each level and details the number of pages
per sector and block. All program operations to the DataFlash occur on a page-by-page
basis; however, the optional erase operations can be performed at the block or page
level.
FLASH MEMORY ARRAY
PAGE (528 BYTES)
BUFFER 2 (528 BYTES)
BUFFER 1 (528 BYTES)
I/O INTERFACE
SCK
CS
RESET
VCC
GND
RDY/BUSY
WP
SO
SI
相關PDF資料 |
PDF描述 |
|---|---|
| AT45CS1282 | 128-megabit 2.7-volt Dual-interface Code Shadow DataFlash |
| AT45D011 | 1-Megabit 5.0-volt Only Serial DataFlash |
| AT45D011-JC | 1-Megabit 5.0-volt Only Serial DataFlash |
| AT45D011-JI | 1-Megabit 5.0-volt Only Serial DataFlash |
| AT45D011-SC | 1-Megabit 5.0-volt Only Serial DataFlash |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AT45CS1282 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:128-megabit 2.7-volt Dual-interface Code Shadow DataFlash |
| AT45CS1282-TC | 功能描述:閃存 128M bit RoHS:否 制造商:ON Semiconductor 數(shù)據(jù)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 |
| AT45CS1282-TI | 功能描述:IC FLASH 128MBIT 50MHZ 40TSOP RoHS:否 類別:集成電路 (IC) >> 存儲器 系列:- 標準包裝:96 系列:- 格式 - 存儲器:閃存 存儲器類型:FLASH 存儲容量:16M（2M x 8，1M x 16） 速度:70ns 接口:并聯(lián) 電源電壓:2.65 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 封裝/外殼:48-TFSOP（0.724"，18.40mm 寬） 供應商設備封裝:48-TSOP 包裝:托盤 |
| AT45D011 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:1-Megabit 5.0-volt Only Serial DataFlash |
| AT45D011-JC | 功能描述:閃存 1M bit RoHS:否 制造商:ON Semiconductor 數(shù)據(jù)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 |
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