参数资料
| 型号： | AT45DB041B-RC |
| 厂商： | Atmel |
| 文件页数： | 11/35页 |
| 文件大小： | 0K |
| 描述： | IC FLASH 4MBIT 20MHZ 28SOIC |
| 标准包装： | 26 |
| 格式 - 存储器： | 闪存 |
| 存储器类型： | DataFLASH |
| 存储容量： | 4M（2048 页 x 264 字节） |
| 速度： | 20MHz |
| 接口： | SPI 3 线串行 |
| 电源电压： | 2.7 V ~ 3.6 V |
| 工作温度： | 0°C ~ 70°C |
| 封装/外壳： | 28-SOIC（0.342"，8.69mm 宽） |
| 供应商设备封装： | 28-SOIC W |
| 包装： | 管件 |
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AT45DB041B
5.5
5.5.1
5.5.2
5.5.3
5.5.4
5.5.5
5.5.6
5.5.7
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 t he 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.
Write Protect (WP)
If the WP pin is held low, the first 256 pages of the main memory cannot be reprogrammed. The
only way to reprogram the first 256 pages is to first drive the protect pin high and then use the
program commands previously mentioned. If this pin and feature are not utilized it is recom-
mended that the WP pin be driven high externally.
RESET
A low state on the reset pin (RESET) will terminate the operation in progress and reset the inter-
nal state machine to an idle state. The device will remain in the reset condition as long as a low
level is present on the RESET pin. Normal operation can resume once the RESET pin is brought
back to a high level.
The device incorporates an internal power-on reset circuit, so there are no restrictions on the
RESET pin during power-on sequences. If this pin and feature are not utilized it is recommended
that the RESET pin be driven high externally.
READY/BUSY
This open drain output pin will be driven low when the device is busy in an internally self-timed
operation. This pin, which is normally in a high state (through a 1 k ? external pull-up resistor),
will be pulled low during programming operations, compare operations, and during page-to-
buffer transfers.
The busy status indicates that the Flash memory array and one of the buffers cannot be
accessed; read and write operations to the other buffer can still be performed.
11
3443D–DFLSH–2/08
相关PDF资料 |
PDF描述 |
|---|---|
| AT45DB041B-CI | IC FLASH 4MBIT 20MHZ 14CBGA |
| AT45DB041B-CC | IC FLASH 4MBIT 20MHZ 14CBGA |
| AT45DB021B-TC | IC FLASH 2MBIT 20MHZ 28TSOP |
| AT45DB021B-SI | IC FLASH 2MBIT 20MHZ 8SOIC |
| AT45DB021B-SC | IC FLASH 2MBIT 20MHZ 8SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AT45DB041B-RC-2.5 | 功能描述:IC FLASH 4MBIT 20MHZ 28SOIC RoHS:否 类别:集成电路 (IC) >> 存储器 系列:- 标准包装:378 系列:- 格式 - 存储器:闪存 存储器类型:FLASH 存储容量:8M（1M x 8，512K x 16） 速度:110ns 接口:并联 电源电压:2.7 V ~ 3.6 V 工作温度:-40°C ~ 85°C 封装/外壳:48-CBGA 供应商设备封装:48-CBGA（7x7） 包装:托盘 |
| AT45DB041B-RI | 功能描述:闪存 4M bit 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 |
| AT45DB041B-RI-2.5 | 功能描述:IC FLASH 4MBIT 20MHZ 28SOIC RoHS:否 类别:集成电路 (IC) >> 存储器 系列:- 标准包装:378 系列:- 格式 - 存储器:闪存 存储器类型:FLASH 存储容量:8M（1M x 8，512K x 16） 速度:110ns 接口:并联 电源电压:2.7 V ~ 3.6 V 工作温度:-40°C ~ 85°C 封装/外壳:48-CBGA 供应商设备封装:48-CBGA（7x7） 包装:托盘 |
| AT45DB041B-RU | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:4-megabit 2.5-volt or 2.7-volt DataFlash |
| AT45DB041B-SC | 功能描述:闪存 4MBIT WAFER 7 MIL - 2.7V COM 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 |
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