- 您现在的位置：买卖IC网 > Datasheet目录368 > W25Q64BVSFIG (Winbond Electronics)IC SPI FLASH 64MBIT 16SOIC Datasheet资料下载
参数资料
| 型号： | W25Q64BVSFIG |
| 厂商： | Winbond Electronics |
| 文件页数： | 11/61页 |
| 文件大小： | 0K |
| 描述： | IC SPI FLASH 64MBIT 16SOIC |
| 标准包装： | 44 |
| 系列： | SpiFlash® |
| 格式 - 存储器： | 闪存 |
| 存储器类型： | FLASH |
| 存储容量： | 64M（8M x 8） |
| 速度： | 80MHz |
| 接口： | SPI 串行 |
| 电源电压： | 2.7 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 管件 |
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页第53页第54页第55页第56页第57页第58页第59页第60页第61页
W25Q64BV
10. FUNCTIONAL DESCRIPTION
10.1 SPI OPERATIONS
10.1.1 Standard SPI Instructions
The W25Q64BV is accessed through an SPI compatible bus consisting of four signals: Serial Clock
(CLK), Chip Select (/CS), Serial Data Input (DI) and Serial Data Output (DO). Standard SPI instructions
use the DI input pin to serially write instructions, addresses or data to the device on the rising edge of
CLK. The DO output pin is used to read data or status from the device on the falling edge CLK.
SPI bus operation Modes 0 (0,0) and 3 (1,1) are supported. The primary difference between Mode 0 and
Mode 3 concerns the normal state of the CLK signal when the SPI bus master is in standby and data is
not being transferred to the Serial Flash. For Mode 0 the CLK signal is normally low on the falling and
rising edges of /CS. For Mode 3 the CLK signal is normally high on the falling and rising edges of /CS.
10.1.2 Dual SPI Instructions
The W25Q64BV supports Dual SPI operation when using the “Fast Read Dual Output and Dual I/O” (3B
and BB hex) instructions. These instructions allow data to be transferred to or from the device at two to
three times the rate of ordinary Serial Flash devices. The Dual Read instructions are ideal for quickly
downloading code to RAM upon power-up (code-shadowing) or for executing non-speed-critical code
directly from the SPI bus (XIP). When using Dual SPI instructions the DI and DO pins become
bidirectional I/O pins: IO0 and IO1.
10.1.3 Quad SPI Instructions
The W25Q64BV supports Quad SPI operation when using the “Fast Read Quad Output”, “Fast Read
Quad I/O” and “Octal Word Read Quad I/O” (6B, EB and E3 hex respectively). These instructions allow
data to be transferred to or from the device four to six times the rate of ordinary Serial Flash. The Quad
Read instructions offer a significant improvement in continuous and random access transfer rates
allowing fast code-shadowing to RAM or execution directly from the SPI bus (XIP). When using Quad SPI
instructions the DI and DO pins become bidirectional IO0 and IO1, and the /WP and /HOLD pins become
IO2 and IO3 respectively. Quad SPI instructions require the non-volatile Quad Enable bit (QE) in Status
Register-2 to be set.
10.1.4 Hold Function
The /HOLD signal allows the W25Q64BV operation to be paused while it is actively selected (when /CS is
low). The /HOLD function may be useful in cases where the SPI data and clock signals are shared with
other devices. For example, consider if the page buffer was only partially written when a priority interrupt
requires use of the SPI bus. In this case the /HOLD function can save the state of the instruction and the
data in the buffer so programming can resume where it left off once the bus is available again. The
/HOLD function is only available for standard SPI and Dual SPI operation, not during Quad SPI.
To initiate a /HOLD condition, the device must be selected with /CS low. A /HOLD condition will activate
on the falling edge of the /HOLD signal if the CLK signal is already low. If the CLK is not already low the
/HOLD condition will activate after the next falling edge of CLK. The /HOLD condition will terminate on the
rising edge of the /HOLD signal if the CLK signal is already low. If the CLK is not already low the /HOLD
condition will terminate after the next falling edge of CLK. During a /HOLD condition, the Serial Data
Output (DO) is high impedance, and Serial Data Input (DI) and Serial Clock (CLK) are ignored. The Chip
Select (/CS) signal should be kept active (low) for the full duration of the /HOLD operation to avoid
resetting the internal logic state of the device.
Publication Release Date: July 08, 2010
- 11 -
Revision E
相关PDF资料 |
PDF描述 |
|---|---|
| W25Q64CVZEIG | IC SPI FLASH 64MBIT 8WSON |
| W25Q64DWZEIG | IC FLASH SPI 64MBIT 8WSON |
| W25Q64FVSFIG | IC SPI FLASH 64MBIT 16SOIC |
| W25Q80BVSNIG | IC SPI FLASH 8MBIT 8SOIC |
| W25Q80BWSSIG | IC FLASH SPI 8MBIT 8SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| W25Q64BVSFIP | 制造商:WINBOND 制造商全称:Winbond 功能描述:64M-BIT SERIAL FLASH MEMORY WITH DUAL AND QUAD SPI |
| W25Q64BVSSIG | 功能描述:SPI FLASH 64MBIT 8-SOIC RoHS:是 类别:集成电路 (IC) >> 存储器 系列:SpiFlash® 标准包装:150 系列:- 格式 - 存储器:EEPROMs - 串行 存储器类型:EEPROM 存储容量:4K (2 x 256 x 8) 速度:400kHz 接口:I²C，2 线串口 电源电压:2.5 V ~ 5.5 V 工作温度:-40°C ~ 85°C 封装/外壳:8-VFDFN 裸露焊盘 供应商设备封装:8-DFN（2x3） 包装:管件 产品目录页面:1445 (CN2011-ZH PDF) |
| W25Q64BVSSIGTR | 制造商:Winbond Electronics Corp 功能描述:SPIFLASH, 64M-BIT, 4KB UNIFORM |
| W25Q64BVSSIP | 制造商:WINBOND 制造商全称:Winbond 功能描述:64M-BIT SERIAL FLASH MEMORY WITH DUAL AND QUAD SPI |
| W25Q64BVZEIG | 功能描述:IC SPI FLASH 64MBIT 8WSON RoHS:是 类别:集成电路 (IC) >> 存储器 系列:SpiFlash® 标准包装:1,000 系列:- 格式 - 存储器:EEPROMs - 串行 存储器类型:EEPROM 存储容量:4K (512 x 8) 速度:400kHz 接口:I²C，2 线串口 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 85°C 封装/外壳:8-SOIC（0.173"，4.40mm 宽） 供应商设备封装:8-MFP 包装:带卷 (TR) |
发布紧急采购，3分钟左右您将得到回复。