SST31LF021-70-4C-WH View Datasheet(PDF) - Silicon Storage Technology
Part Name
Description
MFG CO.
'SST31LF021-70-4C-WH' PDF : 24 Pages View PDF
EOL Data Sheet
2 Mbit Flash + 1 Mbit SRAM ComboMemory
SST31LF021 / SST31LF021E
ADDRESS A17-0
BES#
SIX-BYTE CODE FOR BANK-ERASE
5555 2AAA
5555
5555
2AAA
5555
TSBE
BEF#
OE#
WE#
TWP
DQ7-0
AA
55
80
AA
55
10
SW0
SW1
SW2
SW3
SW4
SW5
Note: The device also supports BEF# controlled Bank-Erase operation. The WE# and BEF# signals are
interchangeable as long as minimum timings are met. (See Table 12)
FIGURE 10: WE# CONTROLLED FLASH BANK-ERASE TIMING DIAGRAM
1137 F17.1
ADDRESS A14-0
THREE-BYTE SEQUENCE FOR
SOFTWARE ID ENTRY
5555
2AAA
5555
BES#
0000
0001
BEF#
OE#
WE#
DQ7-0
TWP
TIDA
AA
SW0
TWPH
55
90
SW1
SW2
TAA
BF DEVICE ID
MFG ID
Device ID = 18H for SST31LF021 and 19H for SST31LF021E.
FIGURE 11: FLASH SOFTWARE ID ENTRY AND READ
©2007 Silicon Storage Technology, Inc.
16
1137 F09.5
S71137-06-EOL
05/07
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