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參數(shù)資料
| 型號： | AT45BR3214B |
| 廠商： | Atmel Corp. |
| 英文描述： | 32-MEGABIT DATAFLASH + 4-MEGABIT SRAM STACK MEMORY |
| 中文描述： | 32-MEGABIT的DataFlash 4兆位的SRAM堆棧內(nèi)存 |
| 文件頁數(shù)： | 10/40頁 |
| 文件大?。?/td> | 488K |
| 代理商： | AT45BR3214B |
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10
AT45BR3214B
3356B–DFLASH–10/04
If a sector is programmed or reprogrammed sequentially page-by-page, then the pro-
gramming algorithm shown in Figure 1 on page 28 is recommended. Otherwise, if
multiple bytes in a page or several pages are programmed randomly in a sector, then
the programming algorithm shown in Figure 2 on page 29 is recommended. Each page
within a sector must be updated/rewritten at least once within every 10,000 cumulative
page erase/program operations in that sector.
Operation Mode
Summary
The modes described can be separated into two groups – modes which make use of the
Flash memory array (Group A) and modes which do not make use of the Flash memory
array (Group B).
Group A modes consist of:
1.
Main Memory Page Read
2.
Main Memory Page to Buffer 1 (or 2) Transfer
3.
Main Memory Page to Buffer 1 (or 2) Compare
4.
Buffer 1 (or 2) to Main Memory Page Program with Built-in Erase
5.
Buffer 1 (or 2) to Main Memory Page Program without Built-in Erase
6.
Page Erase
7.
Block Erase
8.
Main Memory Page Program through Buffer
9.
Auto Page Rewrite
Group B modes consist of:
1.
Buffer 1 (or 2) Read
2.
Buffer 1 (or 2) Write
3.
Status Register Read
If a Group A mode is in progress (not fully completed) then another mode in Group A
should not be started. However, during this time in which a Group A mode is in
progress, modes in Group B can be started.
This gives the Serial DataFlash the ability to virtually accommodate a continuous data-
stream. While data is being programmed into main memory from buffer 1, data can be
loaded into buffer 2 (or vice versa). See application note AN-4 (“Using Atmel’s Serial
DataFlash”) for more details.
Pin Descriptions
SERIAL INPUT (SI):
The SI pin is an input-only pin and is used to shift data into the
device. The SI pin is used for all data input including opcodes and address sequences.
SERIAL OUTPUT (SO):
The SO pin is an output-only pin and is used to shift data out
from the device.
SERIAL CLOCK (SCK):
The SCK pin is an input-only pin and is used to control the flow
of data to and from the DataFlash. Data is always clocked into the device on the rising
edge of SCK and clocked out of the device on the falling edge of SCK.
CHIP SELECT (CS):
The DataFlash is selected when the CS pin is low. When the
device is not selected, data will not be accepted on the SI pin, and the SO pin will
remain in a high-impedance state. A high-to-low transition on the CS pin is required to
start an operation, and a low-to-high transition on the CS pin is required to end an
operation.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AT45BR3214B-C1 | 32-MEGABIT DATAFLASH + 4-MEGABIT SRAM STACK MEMORY |
| 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 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AT45BR3214B-C1 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:32-MEGABIT DATAFLASH + 4-MEGABIT SRAM STACK MEMORY |
| 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(jié)構(gòu):256 K x 8 定時(shí)類型: 接口類型:SPI 訪問時(shí)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(fēng)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(biāo)準(zhǔn)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(yīng)商設(shè)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 |
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