SST34WA3283 Silicon Storage Technology, Inc., SST34WA3283 Datasheet - Page 29

• Manufacturer Part Number: SST34WA3283
• Description: 32 Mbit Burst Mode Concurrent Superflash Combomemory 32 Mbit Burst Mode Concurrent Superflash Combomemory
• Manufacturer: Silicon Storage Technology, Inc.

32 Mbit Burst Mode Concurrent SuperFlash ComboMemory
SST34WA32A3 / SST34WA32A4 / SST34WA3283 / SST34WA3284
TABLE 18: PSRAM Operation Mode Selection - Asynchronous
TABLE 19: PSRAM Bus Operation - Burst Mode
©2007 Silicon Storage Technology, Inc.
Mode
Word Read
Lower Byte Read
Upper Byte Read
Word Write
Lower Byte Write
Upper Byte Write
Output Disable/
No Operation
Deep Power-Down
Standby
Mode
Initial Burst Read
Subsequent Burst
Read
Initial Burst Write
Subsequent Burst
Write
No Operation
Standby
Deep Power-Down
1. The clock signal (CLK) must remain low in asynchronous operating mode.
2. BEF# and BES# cannot be low at the same time.
3. The device enters Deep Power-Down mode by driving the chip Enable Signal, BES#, from Low to High with bit 4 of the RCR set to
1. The Configuration Register is output during the initial burst operation (read or write). The following read or write operations are similar
2. BEF# and BES# cannot be low at the same time.
‘0’. The device remains in Deep Power-Down mode until BES# goes Low again and is held Low for TCW. The Device is reading and
programming the registers use CRES controlled method or the software method.
to subsequent burst operations. BES# must be held Low for the equivalent of a single-word burst operation
1
3
BES#
CLK
rising
rising
rising
rising
rising
V
V
V
V
V
V
IH
IH
IL
IL
IL
IL
2
1
Assert
AVD#
going
low
BES#
X
X
V
V
V
V
V
V
V
IH
IH
IL
IL
IL
IL
IL
2
WE#
V
V
V
X
X
AVD#
IH
IH
IL
V
V
V
V
X
X
X
IH
IH
IL
IL
OE#
V
V
V
V
V
V
V
X
X
IH
IH
IH
IH
IL
IL
IL
WE#
V
V
V
X
X
X
X
IH
IH
IL
UBS#
V
V
V
V
V
V
29
X
X
X
IH
IH
IL
IL
IL
IL
OE#
V
V
V
V
X
X
X
IH
IH
IH
IH
LBS#
V
V
V
V
V
V
X
X
X
IH
IH
UBS#/
IL
IL
IL
IL
LBS#
V
V
V
X
X
X
X
IL
IL
IL
CRES
V
V
V
V
V
V
V
X
X
IL
IL
IL
IL
IL
IL
IL
High-Z
Low-Z
WAIT
Amax -16
Address in
Address in
Address in
Address in
Address in
Address in
Valid
Valid
Valid
Valid
Valid
Valid
X
X
X
CRES
V
V
V
X
IL
IL
IL
Data in Valid
Address in/
Address in/
A/DQ7-0
Address in/Data out Valid
Address in/Data out Valid
Amax -16
Address in
Address in
Data out
Data out
High-Z
Valid
Valid
Advance Information
Valid
Valid
X
X
X
X
X
S71358-01-000
High-Z
High-Z
High-Z
Data in Valid
Data in Valid
Data in Valid
A/DQ15-8
Address in/
Address in/
A/DQ10-0
Address in
Address in
Data out
Data out
High-Z
High-Z
High-Z
High-Z
Valid
Valid
Valid
Valid
T18.0 1358
T19.0 1358
11/07