512 Kbit SPI Serial Flash
A Microchip Technology Company
SST25VF512
Data Sheet
Memory Organization
The SST25VF512 SuperFlash memory array is organized in 4 KByte sectors with 32 KByte overlay
blocks.
Device Operation
The SST25VF512 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 SST25VF512 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 2, 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
MODE 0
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
DON T CARE
MODE 0
SO
MSB
HIGH IMPEDANCE
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
MSB
1192 F34.6
Figure 2: SPI Protocol
?2011 Silicon Storage Technology, Inc.
5
DS25076A
10/11
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相关代理商/技术参数
SST25VF512A 制造商:SST 制造商全称:Silicon Storage Technology, Inc 功能描述:512 Kbit SPI Serial Flash
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SST25VF512A-33-4C-SAE 制造商:Microchip Technology Inc 功能描述:MEMORY FLASH 512K SPI 8SOIC
SST25VF512A-33-4C-SAE 制造商:Microchip Technology Inc 功能描述:2.7V to 3.6V 512Kbit SPI Seria
SST25VF512A-33-4C-SAE-T 功能描述:闪存 2.7V to 3.6V 512Kbit 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
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