8 Mbit Firmware Hub
A Microchip Technology Company
SST49LF008A
Data Sheet
Parallel Programming Mode
Device Operation
Commands are used to initiate the memory operation functions of the device. The data portion of the
software command sequence is latched on the rising edge of WE#. During the software command
sequence the row address is latched on the falling edge of R/C# and the column address is latched on
the rising edge of R/C#.
Reset
A V IL on RST# pin initiates a device reset.
Read
The Read operation of the SST49LF008A device is controlled by OE#. OE# is the output control and is
used to gate data from the output pins. Refer to the Read cycle timing diagram, Figure 13, for further
details.
Byte-Program Operation
The SST49LF008A device is programmed on a byte-by-byte basis. Before programming, one must
ensure that the sector, in which the byte which is being programmed exists, is fully erased. The Byte-
Program operation is initiated by executing a four-byte command load sequence for Software Data
Protection with address (BA) and data in the last byte sequence. During the Byte-Program operation,
the row address (A 10 -A 0 ) is latched on the falling edge of R/C# and the column Address (A 21 -A 11 ) is
latched on the rising edge of R/C#. The data bus is latched in the rising edge of WE#. The Program
operation, once initiated, will be completed, within 20 μs. See Figure 14 for Program operation timing
diagram, Figure 17 for timing waveforms, and Figure 25 for its flowchart. During the Program opera-
tion, the only valid reads are Data# Polling and Toggle Bit. During the internal Program operation, the
host is free to perform additional tasks. Any commands written during the internal Program operation
will be ignored.
?2011 Silicon Storage Technology, Inc.
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相关代理商/技术参数
SST49LF008A-33-4C-NH 制造商:SST 制造商全称:Silicon Storage Technology, Inc 功能描述:2 Mbit / 3 Mbit / 4 Mbit / 8 Mbit Firmware Hub
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SST49LF008A-33-4C-NHE_ 制造商:Microchip Technology Inc 功能描述:
SST49LF008A-33-4C-NHE-T 功能描述:闪存 8M (1Mx8) 33MHz 3.0-3.6V 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
SST49LF008A-33-4C-NHE-T-CUT TAPE 制造商:Microchip 功能描述:SST49LF Series 8 Mbit 1024 K x 8 3.3 V Firmware Hub - PLCC-32
SST49LF008A-33-4C-WH 制造商:SST 制造商全称:Silicon Storage Technology, Inc 功能描述:2 Mbit / 3 Mbit / 4 Mbit / 8 Mbit Firmware Hub
SST49LF008A-33-4C-WHE 功能描述:闪存 8 MBIT FIRMWARE HUB 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
SST49LF008A-33-4C-WHE_ 制造商:Microchip Technology Inc 功能描述: