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IS42S16128 View Datasheet(PDF) - Integrated Silicon Solution

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IS42S16128 Datasheet PDF : 75 Pages
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IS42S16128
ISSI ®
128K Words x 16 Bits x 2 Banks (4-MBIT)
SYNCHRONOUS DYNAMIC RAM
FEBRUARY 2000
FEATURES
• Clock frequency: 125 MHz, 100 MHz, 83 MHz
• Two banks can be operated simultaneously and
independently
• Single 3.3V power supply
• LVTTL interface
• Programmable burst length
– (1, 2, 4, 8, full page)
• Programmable burst sequence:
Sequential/Interleave
• Auto refresh, self refresh
• 1K refresh cycles every 16 ms
• Random column address every clock cycle
• Programmable CAS latency (2, 3 clocks)
• Burst read/write and burst read/single write
operations capability
• Byte controlled by LDQM and UDQM
• Package 400-mil 50-pin TSOP II
PIN CONFIGURATIONS
50-Pin TSOP (Type II)
DESCRIPTION
ISSI's 4Mb Synchronous DRAM IS42S16128 is organized as
a 131072-word x 16-bit x 2-bank for improved performance.
The synchronous DRAMs achieve high-speed data transfer
using pipeline architecture. All inputs and outputs signals refer
to the rising edge of the clock input.
PIN DESCRIPTIONS
A0-A9
A0-A8
A9
A0-A7
I/O0 to I/O15
CLK
CKE
CS
RAS
CAS
WE
LDQM
UDQM
Address Input
Row Address Input
Bank Select Address
Column Address Input
Data I/O
System Clock Input
Clock Enable
Chip Select
Row Address Strobe Command
Column Address Strobe Command
Write Enable
Lower Bye, Input/Output Mask
Upper Bye, Input/Output Mask
VCC 1
I/O0 2
I/O1 3
GNDQ 4
I/O2 5
I/O3 6
VCCQ 7
I/O4 8
I/O5 9
GNDQ 10
I/O6 11
I/O7 12
VCCQ 13
LDQM 14
WE 15
CAS 16
RAS 17
CS 18
A9 19
A8 20
A0 21
A1 22
A2 23
A3 24
VCC 25
50 GND
49 I/O15
48 I/O14
47 GNDQ
46 I/O13
45 I/O12
44 VCCQ
43 I/O11
42 I/O10
41 GNDQ
40 I/O9
39 I/O8
38 VCCQ
37 NC
36 UDQM
35 CLK
34 CKE
33 NC
32 NC
31 NC
30 A7
29 A6
28 A5
27 A4
26 GND
Vcc
GND
VccQ
GNDQ
NC
Power
Ground
Power Supply for I/O Pin
Ground for I/O Pin
No Connection
ORDERING INFORMATION
Commercial Range: 0C to 70C
Frequency
125 MHz
100 MHz
83 MHz
Speed (ns)
8
10
12
Order Part No.
IS42S16128-8T
IS42S16128-10T
IS42S16128-12T
Package
400-mil TSOP II
400-mil TSOP II
400-mil TSOP II
ISSI reserves the right to make changes to its products at any time without notice in order to improve design and supply the best possible product. We assume no responsibility for any
errors which may appear in this publication. © Copyright 2000, Integrated Silicon Solution, Inc.
Integrated Silicon Solution, Inc. — 1-800-379-4774
1
Rev. A
03/13/00
 

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