- 您现在的位置：买卖IC网 > PDF目录4390 > SST25WF040-40-5I-SAF (Microchip Technology)IC FLASH SER 4MB 40MHZ SPI 8SOIC PDF资料下载
参数资料
| 型号： | SST25WF040-40-5I-SAF |
| 厂商： | Microchip Technology |
| 文件页数： | 7/36页 |
| 文件大小： | 0K |
| 描述： | IC FLASH SER 4MB 40MHZ SPI 8SOIC |
| 特色产品： | SST Serial and Parallel Flash Memory |
| 标准包装： | 100 |
| 系列： | SST25 |
| 格式 - 存储器： | 闪存 |
| 存储器类型： | FLASH |
| 存储容量： | 4M (512K x 8) |
| 速度： | 40MHz |
| 接口： | SPI 串行 |
| 电源电压： | 1.65 V ~ 1.95 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 管件 |
| 产品目录页面： | 1452 (CN2011-ZH PDF) |
第1页第2页第3页第4页第5页第6页当前第7页第8页第9页第10页第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
512 Kbit / 1 Mbit / 2 Mbit / 4 Mbit 1.8V SPI Serial Flash
A Microchip Technology Company
SST25WF512 / SST25WF010 / SST25WF020 / SST25WF040
Data Sheet
Hold
The Hold operation enables the hold pin functionality of the RST#/HOLD# pin. Once set to hold pin
mode, the RST#/HOLD# pin continues functioning as a hold pin until the device is powered off and
then powered on. After a power-off and power-on, the pin functionality returns to a reset pin (RST#)
mode. See “Enable-Hold (EHLD)” on page 22 for detailed timing of the Hold instruction.
In the hold mode, serial sequences underway with the SPI Flash memory are paused without resetting
the clocking sequence. To activate the HOLD# mode, CE# must be in active low state. The HOLD#
mode begins when the SCK active low state coincides with the falling edge of the HOLD# signal. The
Hold mode ends when the rising edge of the HOLD# signal coincides with the SCK active low state. If
the falling edge of the HOLD# signal does not coincide with the SCK active low state, then the device
enters Hold mode when the SCK next reaches the active low state. Similarly, if the rising edge of the
HOLD# signal does not coincide with the SCK active low state, then the device exits Hold mode when
the SCK next reaches the active low state. See Figure 5 for Hold Condition waveform.
Once the device enters Hold mode, SO will be in high-impedance state while SI and SCK can be V IL or V IH.
If CE# is driven active high during a Hold condition, the device returns to standby mode. The device
can then be re-initiated with the command sequences listed in Tables 9 and 10. As long as HOLD# sig-
nal is low, the memory remains in the Hold condition. To resume communication with the device,
HOLD# must be driven active high, and CE# must be driven active low. See Figure 5 for Hold timing.
SCK
HOLD#
Active
Hold
Active
Hold
Active
1328 Fx5.0
Figure 5: Hold Condition Waveform
Write Protection
SST25WF512/010/020/040 provide software Write protection. The Write Protect pin (WP#) enables or
disables the lock-down function of the status register. The Block-Protection bits (BP2, BP1, BP0, and
BPL) in the status register provide Write protection to the memory array and the status register. See
Table 5 for the Block-Protection description.
Write Protect Pin (WP#)
The Write Protect (WP#) pin enables the lock-down function of the BPL bit (bit 7) in the status register.
When WP# is driven low, the execution of the Write-Status-Register (WRSR) instruction is determined by
the value of the BPL bit (see Table 3). When WP# is high, the lock-down function of the BPL bit is disabled.
Table 3: Conditions to execute Write-Status-Register (WRSR) Instruction
WP#
L
L
H
BPL
1
0
X
Execute WRSR Instruction
Not Allowed
Allowed
Allowed
T3.0 25016
?2011 Silicon Storage Technology, Inc.
7
DS25016A
06/11
相关PDF资料 |
PDF描述 |
|---|---|
| SST39VF020-70-4I-NHE | IC FLASH MPF 2MBIT 70NS 32PLCC |
| SST39VF020-70-4C-NHE | IC FLASH MPF 2MBIT 70NS 32PLCC |
| SST39SF010A-70-4C-WHE | IC FLASH MPF 1MBIT 70NS 32TSOP |
| 23A256-I/ST | IC SRAM 256KBIT 20MHZ 8TSSOP |
| A3PE1500-2FG484I | IC FPGA 1KB FLASH 1.5M 484-FBGA |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SST25WF040-40-5I-SAF-T | 功能描述:闪存 1.65 to 1.95V 4Mbit SPI 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 |
| SST25WF080 | 制造商:SST 制造商全称:Silicon Storage Technology, Inc 功能描述:8Mbit 1.8V SPI Serial Flash |
| SST25WF080_12 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8 Mbit 1.8V SPI Serial Flash |
| SST25WF080-75-4I-SAE | 制造商:SST 制造商全称:Silicon Storage Technology, Inc 功能描述:8Mbit 1.8V SPI Serial Flash |
| SST25WF080-75-4I-SAF | 功能描述:闪存 8M (1Mx8) 75MHz Industrial 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。