Preliminary Specifications
Multi-Purpose Flash Plus + SRAM ComboMemory
SST32HF1641 / SST32HF1681 / SST32HF3241 / SST32HF3281
SST32HF1621C / SST32HF1641C / SST32HF3241C
SIX-BYTE CODE FOR SECTOR-ERASE
TSE
ADDRESS AMS-0
5555 2AAA
5555
5555
2AAA
SAX
BEF#
OE#
WE#
TWP
DQ15-0
XXAA XX55
XX80
XXAA
XX55
XX30
SW0
SW1
SW2
SW3
SW4
SW5
Note: AMSF = Most Significant Flash Address
AMSF = A19 for SST32HF16x1x and A20 for SST32HF32x1x
This device also supports BEF# controlled Sector-Erase operation.
The WE# and BEF# signals are interchangeable as long as minimum timings are meet. (See Table 13.)
SAX = Sector Address
WP# must be held in proper logic state (VIL or VIH) 1 µs prior to and 1 µs after the command sequence
X can be VIL or VIH, but no other value.
1236 F12.2
FIGURE 13: WE# CONTROLLED FLASH SECTOR-ERASE TIMING DIAGRAM
©2005 Silicon Storage Technology, Inc.
22
S71236-04-000
5/05