IS41LV16257B-35K-TR ISSI, Integrated Silicon Solution Inc, IS41LV16257B-35K-TR Datasheet - Page 3

• Manufacturer Part Number: IS41LV16257B-35K-TR
• Manufacturer: ISSI, Integrated Silicon Solution Inc
• Type: FPMr

Specifications of IS41LV16257B-35K-TR

• Organization: 256Kx16
• Density: 4Mb
• Address Bus: 9b
• Access Time (max): 35ns
• Maximum Clock Rate: Not RequiredMHz
• Operating Supply Voltage (typ): 3.3V
• Package Type: SOJ
• Operating Temp Range: 0C to 70C
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 3V
• Supply Current: 220mA
• Pin Count: 40
• Mounting: Surface Mount
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Not Compliant

IS41LV16257B
TRUTH TABLE
Integrated Silicon Solution, Inc.
Rev. C
06/18/07
Function
Standby
Read: Word
Read: Lower Byte
Read: Upper Byte
Write: Word (Early Write)
Write: Lower Byte (Early Write)
Write: Upper Byte (Early Write)
Read-Write
Hidden Refresh
RAS-Only Refresh
CBR Refresh
Notes:
1. These WRITE cycles may also be BYTE WRITE cycles (either LCAS or UCAS active).
2. These READ cycles may also be BYTE READ cycles (either LCAS or UCAS active).
3. At least one of the two CAS signals must be active (LCAS or UCAS).
(1,2)
(3)
2)
Read L H L
Write L H L
H L
RAS
RAS
RAS
RAS
RAS
H
L
L
L
L
L
L
L
L
LCAS
LCAS
LCAS
LCAS
LCAS
H
H
H
H
L
L
L
L
L
L
L
L
UCAS
UCAS
UCAS
UCAS
UCAS
H
H
H
H
L
L
L
L
L
L
L
L
H L
WE
WE
WE
WE
WE
X
H
H
H
H
X
X
L
L
L
L
L H
OE
OE
OE
OE
OE
X
X
X
X
X
X
X
L
L
L
L
Address t
ROW/COL
ROW/COL
ROW/COL
ROW/COL
ROW/COL
ROW/COL
ROW/COL
ROW/COL
ROW/COL
ROW/NA
X
X
R
/t
C
I/O
High-Z
D
Lower Byte, D
Upper Byte, High-Z
Lower Byte, High-Z
Upper Byte, D
D
Lower Byte, D
Upper Byte, High-Z
Lower Byte, High-Z
Upper Byte, D
D
D
D
High-Z
High-Z
OUT
IN
OUT
OUT
OUT
, D
IN
OUT
OUT
IN
IN
3