16 Mbit Concurrent SuperFlash + 2/4/8 Mbit SRAM ComboMemory
SST34HF1602C / SST34HF1622C / SST34HF1642C
SST34HF1642D / SST34HF1682D / SST34HF1622S / SST34HF1642S
Advance Information
TABLE 4: OPERATIONAL MODES SELECTION FOR X16 (P)SRAM
DQ15-8
CIOF = VIL
Mode
BEF#1 BES1#1,2
BES21,2
X
OE#2,3
X
WE#2,3 LBS#2 UBS#2
DQ7-0
CIOF = VIH
Full Standby
VIH
VIH
VIL
VIL
VIL
VIL
VIH
VIH
X
X
X
X
X
X
X
HIGH-Z
HIGH-Z
HIGH-Z
HIGH-Z
HIGH-Z
VIL
VIH
VIH
X
X
Output Disable
VIL
VIL
VIH
X
VIH
X
VIH
X
X
X
HIGH-Z
HIGH-Z
DOUT
DIN
HIGH-Z
HIGH-Z
DOUT
DIN
VIH
X
VIH
X
VIH
VIH
VIL
X
Flash Read
Flash Write
VIH
X
VIL
VIH
VIH
VIL
VIH
VIL
VIL
VIH
X
X
X
X
X
X
DQ14-8 = HIGH-Z
DQ15 = A-1
VIL
X
VIH
X
DQ14-8 = HIGH-Z
DQ15 = A-1
VIL
X
Flash Erase
(P)SRAM Read
VIH
X
X
X
X
VIL
VIH
VIL
VIL
VIH
VIL
VIL
VIH
VIL
X
VIL
VIL
VIH
VIL
VIL
VIH
X
DOUT
HIGH-Z
DOUT
DIN
DOUT
DOUT
HIGH-Z
DIN
DOUT
DOUT
HIGH-Z
DIN
(P)SRAM Write
VIH
VIL
VIH
X
VIL
HIGH-Z
DIN
Manufacturer’s ID5
Device ID5
DIN
DIN
HIGH-Z
HIGH-Z
Product
VIL
VIH
VIL
VIL
VIH
Identification4
T4.0 1256
1. Do not apply BEF# = VIL, BES1# = VIL and BES2 = VIH at the same time
2. X can be VIL or VIH, but no other value.
3. OE# = OEF# and OES#
WE# = WEF# and WES# for LS package only
4. Software mode only
5. With A19-A18 = VIL;SST Manufacturer’s ID = BFH, is read with A0=0,
SST34HF16x2C/D/S Device ID = 734AH, is read with A0=1
©2004 Silicon Storage Technology, Inc.
S71256-00-000
3/04
12
SST [ SILICON STORAGE TECHNOLOGY, INC ]
