IS42S16800E-7BL ISSI, Integrated Silicon Solution Inc, IS42S16800E-7BL Datasheet - Page 18

• Manufacturer Part Number: IS42S16800E-7BL
• Description: IC SDRAM 128MBIT 143MHZ 54BGA
• Manufacturer: ISSI, Integrated Silicon Solution Inc
• Type: SDRAMr

Specifications of IS42S16800E-7BL

• Format - Memory: RAM
• Memory Type: SDRAM
• Memory Size: 128M (8Mx16)
• Speed: 143MHz
• Interface: Parallel
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 54-BGA
• Organization: 16Mx8
• Density: 128Mb
• Address Bus: 14b
• Access Time (max): 6.5/5.4ns
• Maximum Clock Rate: 143MHz
• Operating Supply Voltage (typ): 3.3V
• Package Type: TFBGA
• 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

IS42S81600E, IS42S16800E
OPERATING FREQUENCY / LATENCY RELATIONSHIPS
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—
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
* for -75E, CAS Latency = 2
18
SYMBOL PARAMETER
cac
rcd
rac
rc
ras
rp
rrd
ccd
dpl
dal
rbd
wbd
rql
wdl
pql
qmd
dmd
mrd
Clock Cycle Time
Operating Frequency (CAS Latency = 3)
CAS Latency
Active Command To Read/Write Command Delay Time
RAS Latency (t
Command Period (REF to REF / ACT to ACT)
Command Period (ACT to PRE)
Command Period (PRE to ACT)
Command Period (ACT[0] to ACT [1])
Column Command Delay Time
(READ, READA, WRIT, WRITA)
Input Data To Precharge Command Delay Time
Input Data To Active/Refresh Command Delay Time
(During Auto-Precharge)
Burst Stop Command To Output in HIGH-Z Delay Time
(Read)
Burst Stop Command To Input in Invalid Delay Time
(Write)
Precharge Command To Output in HIGH-Z Delay Time
(Read)
Precharge Command To Input in Invalid Delay Time
(Write)
Last Output To Auto-Precharge Start Time (Read)
DQM To Output Delay Time (Read)
DQM To Input Delay Time (Write)
Mode Register Set To Command Delay Time
rcd
+ t
cac
)
CAS Latency = 3
CAS Latency = 3
CAS Latency = 3
CAS Latency = 3
CAS Latency = 2
CAS Latency = 2
CAS Latency = 2
CAS Latency = 2
Integrated Silicon Solution, Inc. — www.issi.com
200
-5
10
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—
—
—
-2
5
3
3
6
7
3
2
1
2
5
3
0
3
0
2
0
2
166
-6
10
—
—
—
-2
—
6
3
3
6
7
3
2
1
2
5
3
0
3
0
2
0
2
143
10
–2
-7
—
—
—
—
7
3
3
6
7
3
2
1
2
5
3
0
3
0
2
0
2
-75E
133*
7.5
—
—
—
—
2*
2*
-1
4
9
6
2
2
1
2
4
2
0
2
0
2
0
2
UNITS
cycle
cycle
cycle
cycle
cycle
cycle
cycle
cycle
cycle
cycle
cycle
cycle
cycle
cycle
cycle
cycle
cycle
cycle
MHz
03/16/2011
ns
Rev. D