2 Mbit Flash + 1 Mbit SRAM ComboMemory
SST31LF021 / SST31LF021E
Data Sheet
ADDRESS A14-0
BES#
BEF#
OE#
WE#
DQ7-0
THREE-BYTE SEQUENCE FOR
SOFTWARE ID EXIT AND RESET
5555
2AAA 5555
TWP
SW0
AA
T WHP
SW1
SW2
55
F0
FIGURE 12: FLASH SOFTWARE ID EXIT AND RESET
TIDA
392 ILL F10.0
ADDRESS A17-0
BEj#
TBS
BEj1#
WE#
OE#
DQ7-0
Note: j = F or S
j1 = S or F
FIGURE 13: TIMING DIAGRAM FOR ALTERNATING BETWEEN FLASH/SRAM AND SRAM/FLASH
392 ILL F20.0
©2001 Silicon Storage Technology, Inc.
16
S71137-03-000 10/01 392