SST49LF020A-33-4C-NHE SST [Silicon Storage Technology, Inc], SST49LF020A-33-4C-NHE Datasheet - Page 19

• Manufacturer Part Number: SST49LF020A-33-4C-NHE
• Description: 2 Mbit LPC Flash
• Manufacturer: SST [Silicon Storage Technology, Inc]

2 Mbit LPC Flash
SST49LF020A
Data Protection (PP Mode)
The SST49LF020A devices provide both hardware and
software features to protect nonvolatile data from inadvert-
ent writes.
Hardware Data Protection
Noise/Glitch Protection: A WE# pulse of less than 5 ns will
not initiate a Write cycle.
V
inhibited when V
Write Inhibit Mode: Forcing OE# low, WE# high will inhibit
the Write operation. This prevents inadvertent writes during
power-up or power-down.
©2006 Silicon Storage Technology, Inc.
DD
Power Up/Down Detection: The Write operation is
DD
is less than 1.5V.
19
Software Data Protection (SDP)
The SST49LF020A provide the JEDEC approved Software
Data Protection scheme for all data alteration operation,
i.e., Program and Erase. Any Program operation requires
the inclusion of a series of three-byte sequence. The three-
byte load sequence is used to initiate the Program opera-
tion, providing optimal protection from inadvertent Write
operations, e.g., during the system power-up or power-
down. Any Erase operation requires the inclusion of a six-
byte load sequence.
S71206-08-000
Data Sheet
5/06