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8 Mbit Firmware Hub
A Microchip Technology Company
SST49LF008A
Data Sheet
Sector-Erase Operation
The Sector-Erase operation allows the system to erase the device on a sector-by-sector basis. The
sector architecture is based on uniform sector size of 4 KByte. The Sector-Erase operation is initiated
by executing a six-byte command load sequence for Software Data Protection with Sector-Erase com-
mand (30H) and sector address (SA) in the last bus cycle. The internal Erase operation begins after
the sixth WE# pulse. The End-of-Erase can be determined using either Data# Polling or Toggle Bit
methods. See Figure 18 for Sector-Erase timing waveforms. Any commands written during the Sector-
Erase operation will be ignored.
Block-Erase Operation
The Block-Erase Operation allows the system to erase the device in 64 KByte uniform block size for
the SST49LF008A. The Block-Erase operation is initiated by executing a six-byte command load
sequence for Software Data Protection with Block-Erase command (50H) and block address. The
internal Block-Erase operation begins after the sixth WE# pulse. The End-of-Erase can be determined
using either Data# Polling or Toggle Bit methods. See Figure 19 for timing waveforms. Any commands
written during the Block-Erase operation will be ignored.
Chip-Erase
The SST49LF008A device provides a Chip-Erase operation only in PP Mode, which allows the user to
erase the entire memory array to the ‘1’s state. This is useful when the entire device must be quickly
erased.
The Chip-Erase operation is initiated by executing a six- byte Software Data Protection command
sequence with Chip-Erase command (10H) with address 5555H in the last byte sequence. The internal
Erase operation begins with the rising edge of the sixth WE#. During the internal Erase operation, the
only valid read is Toggle Bit or Data# Polling. See Table 9 for the command sequence, Figure 20 for
timing diagram, and Figure 28 for the flowchart. Any commands written during the Chip-Erase opera-
tion will be ignored.
?2011 Silicon Storage Technology, Inc.
18
DS25085A
10/11
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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
SST49LF008A-33-4C-NHE 功能描述:闪存 8M (1Mx8) 33MHz Commercial 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
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: