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8 Mbit LPC Flash
A Microchip Technology Company
SST49LF080A
Data Sheet
CE#
The CE# pin, enables and disables the SST49LF080A, controlling read and write access of the device.
To enable the SST49LF080A, the CE# pin must be driven low one clock cycle prior to LFRAME# being
driven low. The device will enter standby mode when internal Write operations are completed and CE#
is high.
LFRAME#
The LFRAME# signifies the start of a (frame) bus cycle or the termination of an undesired cycle.
Asserting LFRAME# for two or more clock cycle and driving a valid START value on LAD[3:0] will initi-
ate device operation. The device will enter standby mode when internal operations are completed and
LFRAME# is high.
TBL#, WP#
The Top Boot Lock (TBL#) and Write Protect (WP#) pins are provided for hardware write protection of
device memory. The TBL# pin is used to Write-Protect 16 boot sectors (64 KByte) at the highest mem-
ory address range for the SST49LF080A. The WP# pin write protects the remaining sectors in the
flash memory.
An active low signal at the TBL# pin prevents Program and Erase operations of the top boot sectors.
When TBL# pin is held high, the write protection of the top boot sectors is disabled. The WP# pin
serves the same function for the remaining sectors of the device memory. The TBL# and WP# pins
write protection functions operate independently of one another.
Both TBL# and WP# pins must be set to their required protection states prior to starting a Program or
Erase operation. A logic level change occurring at the TBL# or WP# pin during a Program or Erase
operation could cause unpredictable results.
?2011 Silicon Storage Technology, Inc.
9
DS25086A
11/11
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SST4H-D0 功能描述:电缆束带 14.8" BLK CABLE TIE RELEAS WEATHER RES RoHS:否 制造商:Phoenix Contact 产品:Cable Tie Mounts 类型:Adhesive 颜色:Black 材料:Acrylonitrile Butadiene Styrene (ABS) 长度:19 mm 宽度:19 mm 抗拉强度:
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SST4HH-D 制造商:Panduit Corp 功能描述: