IS42S16160D-7TL ISSI, Integrated Silicon Solution Inc, IS42S16160D-7TL Datasheet - Page 50

• Manufacturer Part Number: IS42S16160D-7TL
• Description: IC SDRAM 256MBIT 143MHZ 54TSOP
• Manufacturer: ISSI, Integrated Silicon Solution Inc
• Type: SDRAMr

Specifications of IS42S16160D-7TL

• Package / Case: 54-TSOP II
• Memory Size: 256M (16Mx16)
• Format - Memory: RAM
• Memory Type: SDRAM
• Speed: 143MHz
• Interface: Parallel
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: 0°C ~ 70°C
• Data Bus Width: 16 bit
• Maximum Clock Frequency: 143 MHz
• Access Time: 6.5 ns, 5.4 ns
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 3 V
• Maximum Operating Current: 130 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Organization: 16Mx16
• Density: 256Mb
• Address Bus: 15b
• Access Time (max): 6.5/5.4ns
• Maximum Clock Rate: 143MHz
• Operating Supply Voltage (typ): 3.3V
• Package Type: TSOP-II
• Operating Temp Range: 0C to 70C
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 3V
• Supply Current: 130mA
• Pin Count: 54
• Mounting: Surface Mount
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 706-1074; IS42S16160D-7TL

WRITE With Auto Precharge interrupted by a WRITE
IS42S83200D, IS42S16160D
WRITE With Auto Precharge interrupted by a READ
50
WRITE with Auto Precharge
3. Interrupted by a READ (with or without auto precharge):
A READ to bank m will interrupt a WRITE on bank n when
registered, with the data-out appearing (CAS latency)
later. The PRECHARGE to bank n will begin after t
is met, where t
registered.The last valid WRITE to bank n will be data-in
registered one clock prior to the READ to bank m.
Internal States
Internal States
COMMAND
COMMAND
ADDRESS
ADDRESS
BANK m
BANK m
BANK n
BANK n
CLK
CLK
DQ
DQ
dpl
begins when the READ to bank m is
Page Active
Page Active
T0
T0
NOP
NOP
WRITE - AP
WRITE - AP
BANK n,
BANK n,
T1
BANK n
T1
BANK n
COL a
COL a
D
D
Page Active
IN
IN
WRITE with Burst of 4
a
a
Page Active
WRITE with Burst of 4
T2
D
T2
D
NOP
NOP
IN
IN
a+1
a+1
dpl
READ - AP
BANK m,
BANK m
T3
T3
D
NOP
COL b
IN
Interrupt Burst, Write-Back
a+2
4.Interrupted by a WRITE (with or without auto precharge):
t
CAS Latency - 3 (BANK m)
DPL
AWRITE to bank m will interrupt a WRITE on bank n when
registered.The PRECHARGE to bank n will begin after
t
m is registered. The last valid data WRITE to bank n
will be data registered one clock prior to a WRITE to
bank m.
dpl
- BANK n
Integrated Silicon Solution, Inc. — www.issi.com
WRITE - AP
BANK m,
BANK m
T4
T4
NOP
COL b
D
is met, where t
Interrupt Burst, Write-Back
IN
READ with Burst of 4
b
t
DPL
WRITE with Burst of 4
- BANK n
T5
T5
D
NOP
NOP
IN
b+1
dpl
begins when the WRITE to bank
T6
T6
D
NOP
NOP
IN
D
Precharge
t
OUT
b+2
RP - BANK n
b
t
Precharge
RP - BANK n
DON'T CARE
DON'T CARE
T7
T7
D
NOP
NOP
D
Write-Back
IN
Precharge
OUT
b+3
t
t
RP - BANK m
DPL - BANK m
b+1
Rev. 00D
12/12/07