Mosel MS62256H-15RC 32k x 8 high speed cmos static ram Datasheet

MOSEL-VITELIC
MS62256H
32K x 8 HIGH SPEED
CMOS STATIC RAM
MS62256H
ADVANCED
INFORMATION
Features
Description
■ High-speed – 15/20/25/35 ns
■ Low Power dissipation:
MS62256HL
1.1W (Max.) Operating
1mW (Max.) Power down
■ Fully static operation
■ All inputs and outputs directly TTL compatible
■ Three state outputs
■ Ultra low data retention supply current at
VCC = 2V
The MS62256H is a 262,144-bit static random
access memory organized as 32,768 words by 8
bits and operates from a single 5 volt supply. It is
built with MOSEL-VITELIC’s high performance twin
tub CMOS process. Inputs and three-state outputs
are TTL compatible and allow for direct interfacing
with common system bus structures. The
MS62256H is available in the following standard
28-pin packages:
600 MIL Plastic DIP
300 MIL Plastic DIP
300 MIL Small Outline J-Bend (SOJ)
Pin Configurations
Functional Block Diagram
MS62256H
MOSEL-VITELIC
Pin Descriptions
A0 - A14
Address Inputs
These 15 address inputs select one of the 32768
8-bit words in the RAM.
E
Chip Enable Input
E is active LOW. The chip enable must be active
to read from or write to the device. If it is not active,
the device is deselected and is in a standby power
mode. The DQ pins will be in the high-impedance
state when deselected.
Output Enable Input
The output enable input is active LOW. If the
output enable is active while the chip is selected
and the write enable is inactive, data will be present
on the DQ pins and they will be enabled. The DQ
pins will be in the high impedance state when G is
inactive.
W
Write Enable Input
The write enable input is active LOW and controls
read and write operations. With the chip enabled,
when W is HIGH and G is LOW, output data will be
present at the DQ pins; when W is LOW, the data
present on the DQ pins will be written into the
selected memory location.
DQ0 - DQ7
Data Input/Output Ports
These 8 bidirectional ports are used to read data
from or write data into the RAM.
G
Mode
E
G
W
I/O Operation
Standby
H
X
X
High Z
Read
L
L
H
DOUT
Output
Disabled
L
H
H
High Z
Write
L
X
L
D IN
Absolute Maximum Ratings (1)
1.
Power Supply
VSS
Ground
Operating Range
Truth Table
Symbol
VCC
Parameter
Rating
Units
VCC
Supply Voltage
-0.3 to 7
VIN
Input Voltage
-0.3 to 7
VDQ
Input/Output Voltage Applied
-0.3 to 6
TBIAS
Temperature Under
Bias
Plastic
-10 to +125
°C
TSTG
Storage
Temperature
Plastic
-40 to +150
°C
V
PD
Power Dissipation
1.2
W
IOUT
DC Output Current
50
mA
Stresses greater than those listed under ABSOLUTE
MAXIMUM RATINGS may cause permanent damage to
the device. This is a stress rating only and functional
operation of the device at these or any other conditions
above those indicated in the operational sections of this
specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may
affect reliability and degrade performance characteristics.
Range
Ambient
Temperature
Vcc
Commercial
0°C to +70°C
5V ± 10%
MS62256H
MOSEL-VITELIC
DC Electrical Characteristics (over the commercial operating range)
Parameter
Name
Parameter
VIL
Guaranteed Input Low Voltage(2,3)
–0.3
-
0.8
VIH
Guaranteed Input High Voltage(2)
2.2
-
6.0
V
IIL
Input Leakage Current
VCC = Max, V IN = 0V to VCC
–2
-
2
µA
–2
-
2
µA
-
-
0.4
V
2.4
-
-
V
-
-
200
mA
1.
2.
3.
4.
5.
Test Conditions
MS62256H
Min. Typ.(1) Max.
Units
V
IOL
Output Leakage Current
VCC = Max, E = VIH or G = VIH, VIN = 0V t o VCC
VOL
Output Low Voltage
VCC = Min, IOL = 8mA
VOH
Output High Voltage
VCC = Min, IOH = -4.0mA
ICC
Operating Power Supply Current
VCC = Max, E = VIL, IDQ = 0mA, F = Fm ax(4)
ICCSB
Standby Power Supply Current
VCC = Max, E = V IH, IDQ = 0mA
-
-
40
mA
ICCSB1
Power Down Power Supply
VCC = Max, E ≥V
-
-
2
mA
Current
VIN ≥V
-
-
130(5)
µA
CC
CC – 0.2V
– 0.2V or VIN ≤0.2V
Typical characteristics are at VCC = 5V, TA = 25°C.
These are absolute values with respect to device ground and all overshoots due to system or tester noise are included.
VIL (Min.) = –3.0V for pulse width ≤ 20ns
FMAX = 1/tRC.
L version only.
Capacitance(1) TA = 25°C, f = 1.0MHz
Symbol
Parameter
Conditions
Max.
Unit
C IN
Input Capacitance
VIN = 0V
8
pF
CI/O
Input/Output
Capacitance
VI/O = 0V
10
pF
1. This parameter is guaranteed and not tested.
Data Retention Characteristics (over the commercial operating range)
Symbol
Test Conditions
VDR
VCC for Data Retention
E ≥V
CC –
ICCDR
Data Retention Current
E ≥V
CC– 0.2V, VIN ≥V
tCDR
tR
1.
2.
3.
Parameter
Chip Deselect to Data Retention
Time
Operation Recovery Time
0.2V, VIN ≥V
CC –
0.2V or VIN ≤0.2V
CC-– 0.2V or VIN ≤0.2V
Min.
Typ.(1)
Max(2)
2.0(
-
-
V
-
2
504)
µA
0
-
-
ns
tRC(3)
-
-
ns
Units
See Retention Waveform
VCC = 2V, TA = +25°C
VCC = 3V
tRC = Read Cycle Time
Timing Waveform Low VCC Data Retention Waveform
MS62256H
MOSEL-VITELIC
AC Test Conditions
Input Pulse Levels
Key to Switching Waveforms
0V to 3.0V
Input Rise and Fall Times
3ns
Timing Reference Level
1.5V
AC Test Loads and Waveforms
AC Electrical Characteristics (over the commercial operating range)
Read Cycle
Jedec
Parameter Parameter
Name
Name
MS62256H-15 MS62256H-20 MS62256H-25 MS62256H-35
Parameter
Min.
Max. Min.
Max. Min.
Max. Min.
Max.
Unit
ns
tAVAX
tRC
Read Cycle Time
15
-
20
-
25
-
35
-
tAVQV
tAA
Address Access Time
-
15
-
20
-
25
-
35
ns
tELQV
tACS
Chip Enable Access Time
-
15
-
20
-
25
-
35
ns
tGLQX
tOE
Output Enable to Output Valid
-
8
-
10
-
12
-
15
ns
tEHQZ
tCLZ
Chip Enable to Output Low Z
5
-
5
-
5
-
5
-
ns
tGLQX
tOLZ
Output Enable to Output in Low Z
0
-
0
-
0
-
0
-
ns
tEHQZ
tCHZ
Chip Disable to Output in High Z
-
8
-
8
-
10
-
15
ns
tGHQZ
tOHZ
Output Disable to Output in High Z
-
8
-
8
-
10
-
15
ns
tAXQX
tOH
Output Hold from Address Change
3
-
5
-
5
-
5
-
ns
MOSEL-VITELIC
MS62256H
Switching Waveforms (Read Cycle)
READ CYCLE 1(1)
READ CYCLE 2(1, 2, 4)
READ CYCLE 3(1, 3, 4)
NOTES:
1. W is High for READ Cycle.
2. Device is continuously selected E = VIL.
3. Address valid prior to or coincident with E transition low.
4. G = VIL.
5. Transition is measured ± 500mV from steady state with CL = 5pF as shown in Figure 1b. This parameter is guaranteed and not
100% tested.
MS62256H
MOSEL-VITELIC
AC Electrical Characteristics (over the commercial operating range)
Write Cycle
Jedec
Parameter Parameter
Name
Name
MS62256H-15 MS62256H-20 MS62256H-25 MS62256H-35
Parameter
Min.
Max. Min.
Max. Min.
Max. Min.
Max.
Unit
ns
tAVAX
tWC
Write Cycle Time
15
-
20
-
25
-
35
-
tELWH
tCW
Chip Enable to End of Write
10
-
15
-
20
-
25
-
ns
tAVWL
tAS
Address Set up Time
0
-
0
-
0
-
0
-
ns
tAVWH
tAW
Address Valid to End of Write
10
-
15
-
20
-
25
-
ns
tWLWH
tWP
Write Pulse Width
12
-
12
-
15
-
20
-
ns
tWHAX
tWR
Write Recovery Time
0
-
0
-
0
-
0
-
ns
tWLQZ
tWHZ
Write to Output in High Z
0
10
0
10
0
13
0
15
ns
tDVWH
tDW
Data to Write Time Overlap
8
-
10
-
13
-
15
-
ns
tWHDX
tDH
Data Hold from Write Time
0
-
0
-
0
-
0
-
ns
tGHQZ
tOHZ
Output Disable to Output in High Z
0
8
0
8
0
10
0
-
ns
tWHQX
tOW
Output Active from End of Write
3
-
3
-
3
-
0
-
ns
Switching Waveforms (Write Cycle)
WRITE CYCLE 1(1)
MOSEL-VITELIC
MS62256H
Switching Waveforms (Write Cycle)
WRITE CYCLE 2(1,6)
NOTES:
1. W must be high during address transitions.
2. The internal write time of the memory is defined by the overlap E active and W low. Both signals must be active to initiate and
any one signal can terminate a write by going inactive. The data input setup and hold timing should be referenced to the second
transition edge of the signal that terminates the write.
3. TWR is measured from the earlier of E or W going high at the end of write cycle.
4. During this period, DQ pins are in the output state so that the input signals of opposite phase to the outputs must not be applied.
5. If the E low transition occurs simultaneously with the W low transitions or after the W low transition, outputs remain in a high
impedance state.
6. G is continuously low (G = VIL).
7. DOUT is the same phase of write data of this write cycle.
8. DOUT is the read data of next address.
9. If E is low during this period, DQ pins are in the output state. Then the data input signals of opposite phase to the outputs must
not be applied to them.
10. Transition is measured ±500mV from steady state with CL = 5pF as shown in Figure 1b on page 4. This parameter is guaranteed and not 100% tested.
11. tCW is measured from E going low to the end of write.
MS62256H
MOSEL-VITELIC
Ordering Information
Speeds
Ordering Part Number
Package
Temperature Range
15
MS62256H-15NC
28 Pin Plastic DIP - 300 mil
0°C to +70°C
15
MS62256H-15RC
28 Pin Small Outline J Bend
0°C to +70°C
20
MS62256H-20NC
28 Pin Plastic DIP - 300 mil
0°C to +70°C
20
MS62256H-20RC
28 Pin Small Outline J Bend
0°C to +70°C
25
MS62256H-25NC
28 Pin Plastic DIP - 300 mil
0°C to +70°C
25
MS62256H-25RC
28 Pin Small Outline J Bend
0°C to +70°C
35
MS62256H-35NC
28 Pin Plastic DIP - 300 mil
0°C to +70°C
35
MS62256H-35RC
28 Pin Small Outline J Bend
0°C to +70°C
Package Dimensions
28 Pin 300 mil Plastic DIP
28 Pin 300 mil SOJ
MOSEL-VITELIC
WORLDWIDE OFFICES
MS62256H
U.S.A.
TAIWAN
JAPAN
KOREA
3910 NORTH FIRST STREET
SAN JOSE, CA 95134
PHONE: 408-433-6000
FAX: 408-433-00952
5F, NO.. 102
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TAIPEI
PHONE: 011-886-2-545-1213
FAX: 011-886-2-545-1214
RM.302 ANNEX-G
HIGASHI-NAKANO
NAKANO-KU, TOKYO 164
PHONE: 011-81-03-3365-2851
FAX: 011-81-03-3365-2836
RM. 309, BEUK-EUN BLDG.
1339-1 SEOCHO-DONG,
SEOCHO-KU
SEOUL, KOREA
PHONE: 011-82-2-553-3385
FAX: 011-82-2-553-3675
HONG KONG
1 R&D ROAD I
SCIENCE BASED IND. PARK
HSIN CHU, TAIWAN, R.O.C.
PHONE: 011-886-35-770055
FAX: 011-886-35-776520
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FAX: 011-81-04-4812-4074
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TAIPO, NT, HONG KONG
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FAX: 011-852-664-7535
U.S. SALES OFFICES
NORTHWESTERN
SOUTHWESTERN
CENTRAL & SOUTHEASTERN
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5/93
© Copyright 1993, MOSEL-VITELIC Inc.
The information in this document is subject to change without
notice.
MOSEL-VITELIC makes no commitment to update or keep
current the information contained in this document. No part of this
document may be copied or reproduced in any form or by any
means without the prior written consent of MOSEL-VITELIC.
MOSEL-VITELIC
Printed in U.S.A.
MOSEL-VITELIC subjects its products to normal quality control
sampling techniques which are intended to provide an assurance
of high quality products suitable for usual commercial
applications. MOSEL-VITELIC does not do testing appropriate to
provide 100% product quality assurance and does not assume
any liability for consequential or incidental arising from any use of
its products. If such products are to be used in applications in
which personal injury might occur from failure, purchaser must do
its own quality assurance testing appropriate to such applications.
3910 N. First Street, San Jose, CA 95134-1501 Ph: (408) 433-6000 Fax: (408) 433-0952 Tlx: 371-9461
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