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| 型号： | AT45DB321B-RC |
| 厂商： | Atmel |
| 文件页数： | 8/32页 |
| 文件大小： | 0K |
| 描述： | IC FLASH 32MBIT 20MHZ 28SOIC |
| 标准包装： | 26 |
| 格式 - 存储器： | 闪存 |
| 存储器类型： | DataFLASH |
| 存储容量： | 32M（8192 页 x 528 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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If a sector is programmed or reprogrammed sequentially page-by-page, then the pro-
gramming algorithm shown in Figure 1 on page 26 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 27 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
Pin Descriptions
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.
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.
8
AT45DB321B
2223E–DFLASH–11//03
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| AT45DB321B-RI | 功能描述:IC FLASH 32MBIT 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 |
| AT45DB321B-TC | 功能描述:闪存 32M 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 |
| AT45DB321B-TI | 功能描述:IC FLASH 32MBIT 20MHZ 32TSOP RoHS:否 类别:集成电路 (IC) >> 存储器 系列:- 标准包装:32 系列:- 格式 - 存储器:闪存 存储器类型:FLASH 存储容量:1M (128K x 8) 速度:120ns 接口:并联 电源电压:2.7 V ~ 3.6 V 工作温度:0°C ~ 70°C 封装/外壳:32-LCC（J 形引线） 供应商设备封装:32-PLCC 包装:管件 其它名称:AT49BV00112JC |
| AT45DB321C | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:32 MEGABIT 2.7 VOLT DATAFLASH |
| AT45DB321C_06 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:32-megabit 2.7 volt DataFlash |
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