2 Mbit SPI Serial Flash
A Microchip Technology Company
SST25VF020
Not Recommended for New Designs
Memory Organization
The SST25VF020 SuperFlash memory array is organized in 4 KByte sectors with 32 KByte overlay
blocks.
Device Operation
The SST25VF020 is accessed through the SPI (Serial Peripheral Interface) bus compatible protocol.
The SPI bus consist of four control lines; Chip Enable (CE#) is used to select the device, and data is
accessed through the Serial Data Input (SI), Serial Data Output (SO), and Serial Clock (SCK).
The SST25VF020 supports both Mode 0 (0,0) and Mode 3 (1,1) of SPI bus operations. The difference
between the two modes, as shown in Figure 3, is the state of the SCK signal when the bus master is in
Stand-by mode and no data is being transferred. The SCK signal is low for Mode 0 and SCK signal is
high for Mode 3. For both modes, the Serial Data In (SI) is sampled at the rising edge of the SCK clock
signal and the Serial Data Output (SO) is driven after the falling edge of the SCK clock signal.
CE#
MODE 3
MODE 3
SCK
SI
SO
MODE 0
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
MSB
HIGH IMPEDANCE
MODE 0
DON T CAR E
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
MSB
1231 F02.1
Figure 3: SPI Protocol
?2011 Silicon Storage Technology, Inc.
5
DS25078A
11/11
相关PDF资料
SST25VF020B-80-4C-QAE-T IC FLASH SER 2MB 80MHZ SPI 8WSON
SST25VF032B-66-4I-S2AF IC FLASH SER 32M 66MHZ SPI 8SOIC
SST25VF040B-50-4C-ZAE IC FLASH SER 4MB 80MHZ SPI 8CSP
SST25VF040B-80-4I-QAE IC FLASH SER 4MB 80MHZ SPI 8WSON
SST25VF064C-80-4I-Q2AE-T IC FLASH SER 64M DUAL I/O 8WSON
SST25VF080B-80-4I-QAE-T IC FLASH SER 8MB 50MHZ SPI 8WSON
SST25VF512-20-4C-SAE-T IC FLASH SER 512K 20MHZ 8SOIC
SST25VF512A-33-4I-QAE-T IC FLASH SER 512KB 33MHZ 8WSON
相关代理商/技术参数
SST25VF020-20-4C-S2AE 制造商:SST 制造商全称:Silicon Storage Technology, Inc 功能描述:2 Mbit / 4 Mbit SPI Serial Flash
SST25VF020204CSA 制造商:Silicon Storage Technology (SST) 功能描述: 制造商:SST 功能描述:
SST25VF020-20-4C-SA 功能描述:闪存 256K X 8 14 us 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
SST25VF020-20-4C-SAE 功能描述:闪存 256K X 8 14 us 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
SST25VF020-20-4C-SAE-T 功能描述:闪存 2M (256Kx8) 20MHz 2.7-3.6V Commercial 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
SST25VF020-20-4E-QA 功能描述:闪存 256K X 8 14 us 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
SST25VF020-20-4E-QAE 功能描述:闪存 256K X 8 14 us 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
SST25VF020-20-4E-S2AE 制造商:SST 制造商全称:Silicon Storage Technology, Inc 功能描述:2 Mbit / 4 Mbit SPI Serial Flash