- 您现在的位置：买卖IC网 > PDF目录381453 > AT45DB021D_07 (Atmel Corp.) 2-megabit 2.7-volt DataFlash PDF资料下载
参数资料
| 型号： | AT45DB021D_07 |
| 厂商： | Atmel Corp. |
| 英文描述： | 2-megabit 2.7-volt DataFlash |
| 中文描述： | 2兆位2.7伏的DataFlash |
| 文件页数： | 11/52页 |
| 文件大小： | 1108K |
| 代理商： | AT45DB021D_07 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页当前第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页
11
3638B–DFLASH–02/07
AT45DB021D [Preliminary]
7.8
Main Memory Page Program Through Buffer
This operation is a combination of the Buffer Write and Buffer to Main Memory Page Program
with Built-in Erase operations. Data is first clocked into the buffer from the input pin (SI) and then
programmed into a specified page in the main memory. To perform a main memory page pro-
gram through buffer for the DataFlash standard page size (264 bytes), a 1-byte opcode, 82H,
must first be clocked into the device, followed by three address bytes. The address bytes are
comprised of 5 don’t care bits, 10 page address bits, (PA9 - PA0) that select the page in the
main memory where data is to be written, and 9 buffer address bits (BFA8 - BFA0) that select
the first byte in the buffer to be written. To perform a main memory page program through buffer
for the binary page size (256 bytes), the opcode 82H must be clocked into the device followed
by three address bytes consisting of 6 don’t care bits, 10 page address bits (A17 - A8) that spec-
ify the page in the main memory to be written, and 8 buffer address bits (BFA7 - BFA0) that
selects the first byte in the buffer to be written. After all address bytes are clocked in, the part will
take data from the input pins and store it in the specified data buffer. If the end of the buffer is
reached, the device will wrap around back to the beginning of the buffer. When there is a low-to-
high transition on the CS pin, the part will first erase the selected page in main memory to all 1s
and then program the data stored in the buffer into that memory page. Both the erase and the
programming of the page are internally self-timed and should take place in a maximum time of
t
EP
. During this time, the status register will indicate that the part is busy.
8.
Sector Protection
Two protection methods, hardware and software controlled, are provided for protection against
inadvertent or erroneous program and erase cycles. The software controlled method relies on
the use of software commands to enable and disable sector protection while the hardware con-
trolled method employs the use of the Write Protect (WP) pin. The selection of which sectors
that are to be protected or unprotected against program and erase operations is specified in the
nonvolatile Sector Protection Register. The status of whether or not sector protection has been
enabled or disabled by either the software or the hardware controlled methods can be deter-
mined by checking the Status Register.
相关PDF资料 |
PDF描述 |
|---|---|
| AT45DB021D-MU | 2-megabit 2.7-volt DataFlash |
| AT45DB021D-SSU | 2-megabit 2.7-volt DataFlash |
| AT45DB021D-SU | 2-megabit 2.7-volt DataFlash |
| AT45DB021 | 2-Megabit 2.7-volt Only Serial DataFlash |
| AT45DB021-JC | 2-Megabit 2.7-volt Only Serial DataFlash |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AT45DB021D-MH-SL954 | 制造商:Adesto Technologies Corporation 功能描述:8-UDFN (5X6), IND TEMP, 2.7V, TRAY, 256 BYTE PAGE - Trays |
| AT45DB021D-MH-SL955 | 制造商:Adesto Technologies Corporation 功能描述:8-UDFN (5X6), IND TEMP, 2.7V, T&R, 256 BYTE PAGE - Tape and Reel |
| AT45DB021D-MH-T | 功能描述:闪存 2M 2.7-3.6V, 66Mhz Serial 闪存 RoHS:否 制造商:ON Semiconductor 数据总线宽度:1 bit 存储类型:Flash 存储容量:2 MB 结构:256 K x 8 定时类型: 接口类型:SPI 访问时间: 电源电压-最大:3.6 V 电源电压-最小:2.3 V 最大工作电流:15 mA 工作温度:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体: 封装:Reel |
| AT45DB021D-MH-Y | 功能描述:闪存 2 Megabit 2.7V-3.6V RoHS:否 制造商:ON Semiconductor 数据总线宽度:1 bit 存储类型:Flash 存储容量:2 MB 结构:256 K x 8 定时类型: 接口类型:SPI 访问时间: 电源电压-最大:3.6 V 电源电压-最小:2.3 V 最大工作电流:15 mA 工作温度:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体: 封装:Reel |
| AT45DB021D-MU | 功能描述:闪存 2M SERIAL 2.7V - IND TEMP RoHS:否 制造商:ON Semiconductor 数据总线宽度:1 bit 存储类型:Flash 存储容量:2 MB 结构:256 K x 8 定时类型: 接口类型:SPI 访问时间: 电源电压-最大:3.6 V 电源电压-最小:2.3 V 最大工作电流:15 mA 工作温度:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体: 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。