262,144-Words x 16-bit or 524,288-Bytes x 8-bit MaskROM
8Words x 16-Bit or 16Bytes x 8-Bit/Page Mode MASKROM
DESCRIPTION
The OKI MSM534052E is a 262,144-words x 16-bit or 1,048,576-Bytes x 8-bit CMOS Mask
ROM with an asynchronous page read mode. Each page is organized 8 words x 16-bit or 16
words x 8-bit. It operates on a single 5.0V power supply and is TTL compatible. The chip's
asynchronous I/O requires no external clock assuring easy operation. A power-down mode
provides low power dissipation when the chip is not selected. The CE and OE pins are
provided as control signals that permit three-stated output allowing easy memory expansion
on a system bus.The MSM534052E is suited for use as large capacity fixed memory for
microcomputers and data terminals.
FEATURES
Single 5.0V power supply
262,144-words x 16-bit / 524,288-Bytes x 8-bit
8-words(A2,A1,A0) or 16-Bytes(A2,A1,A0,A-1) / Page
Access time
80ns Max (Normal access)
50ns Max (Page access)
Function
Data output / address input
Address input
Data output
Chip enable
Output enable
Mode switch
Power supply
2
Page 3
BLOCK DIAGRAM
VCCV
SS
MSM534052E
A-1BYTE
Output Switching Between 8 and 16 bits
CEOE
CEControlOE
A0
A1
A2
A3
A4
A5
Decoder
A6
A7
A8
A9
A10
Address
Buffer
A11
A12
A13
A14
Decoder
A15
A16
A17
FUNCTION TABLE
OE
CE
H
L
L
LLHInput Inhibited (D15)
L
L
L
L
BYTE
X
H
X
X
L
L
L
L
L
Input Inhibited (D15)
H
L
L
L
L
Memory Cell
Matrix
X
262,144 x 16 or 524,288 x 8
Multiplexer & Page Data Latch
Y
Output Buffer
D0D1D2D3D4D5D6D7D8D9D10
D8—D15D0—D7A-1/D15
X
X
Hi-Z
Hi-Z
D0 to D7
Hi-Z
Hi-Z
D8 to D15
D
OUT
Hi-Z
16 bit
D11
Mode
D12
D13
LSB
D14
—
A0
D15
MSB
—
A17
D0 to D7D8 to D1516 bit(Page Mode)A0A2
L
H
L
H
D0 to D7
D8 to D15
D0 to D7
D8 to D15
Hi-Z
Hi-Z
Hi-Z
Hi-Z
8 bit
A-1
A17
8 bit(Page Mode)A-1A2
3
Page 4
MSM534052E
ABSOLUTE MAXIMUM LIMITS
ParameterSymbol
Power Supply Voltage
Input Voltage
Output Voltage
Power Dissipation
Operating Temperature
Storage Temperature
V
CC
V
I
V
O
P
D
T
opr
T
stg
Per Package T
to V
—
—
SS
= 25°C
opr
RECOMMENDED OPERATING CONDITIONS
ParameterSymbol
V
Power Supply Voltage
"H" Input Voltage
"L" Input Voltage
Operating Temperature700
CC
V
SS
V
IH
V
IL
T
opr
Conditions
—
—
—
—
—
–0.3
–0.3 to 7
–0.3 to V
–0.3 to V
CC
CC
+ 0.5
+ 0.5
1.0
0 to 70
–55 to 150
Limits
Min.Max.
4.5
Typ.
5.0V
5.5
0.00.00.0V
2.25.0V
5.5
0.80.0V
—
UnitLimitsConditions
V
V
V
W
°C
°C
Unit
°C
DC CHARACTERISTICS
ParameterSymbol
I
V
V
I
I
I
CCS
I
CCS
OH
OL
LI
LO
CC
"H" Output Voltage
"L" Output Voltage
Input Leakage Current
Output Leakage Current
Power Supply Current
(Operating)
Power Supply Current
(Standby)
1
CE = V
Conditions
= –400µA
I
OH
= 2.1mA
I
OH
V
= 0 to V
I
VO = 0 to V
CE = V
OE = V
IL,
CE = V
CC
CE = V
IH MIN
IH, tC
–0.2V
IH MIN
CC
CC
= 100ns
(V
= 5V±10%, Ta = 0 to 70°C)
CC
Limits
Min.Max.
2.4
——
–10
–10
—
—
—
Typ.
——
0.4V
—
—
—
—
—
10
10
80mA
50
500
Unit
V
µA
µA
µA
µA
4
Page 5
MSM534052E
AC CHARACTERISTICS
Test conditions
ParameterConditions
=3.0V, VIL=0.0V
Input Signal Level
Transtion Time
Timing Reference Level
Load Condition
Read Cycle
ParameterSymbol
t
ACC
t
PSET
t
t
PAC
t
t
t
CHZ
t
OHZ
t
t
PC
CE
OE
OH
C
Random Access Cycle time
Random Address Access time
Page Set up time
Page Access Cycle time50ns
Page Access time
CE Access time
OE Access time
CE Output Disable time
OE Output Disable time
Output Hold time
Conditions
V
IH
tr=tf=5ns
Input Voltage=1.5V
Output Voltage=0.8V&2.0V
CL=100pF+1TTL
Min.Max.
—
—
—
80
—
100
—
—
—
—
—
—
—
—
—
—
0
(Ta = 0 to 70°C)
Limits
Typ.
—
—
—
—
—
—
—
—
—
—
—
80
—
—
50
80
80
350
300
—
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
Read Cycle (Note1)
Address
OE
D
OUT
5
t
ACC
t
C
t
OH
t
OE
Page 6
MSM534052E
Read Cycle (Note2)
t
C
CE
OE
D
OUT
Page Mode Read Cycle (Note4)
Address
A3 - A17
Address
A0 - A2
D
OUT
t
t
CE
ACC
t
OE
t
PSET
t
PAC
t
CHZ
(Note 3)
t
OHZ
(Note 3)
t
PC
t
PAC
t
PC
t
PAC
t
PC
Note)1. CE is low level.
2. Address is fixed before or at the same time when CE level falls.
3. t
& t
CHZ
OHZ
indicate the time until floating. They are not determined by the output level.
4. CE is low level and OE is low level.
I/O CAPACITANCE
ParameterSymbol
Input Capacitance
Output Capacitance
Conditions
V
C
I
C
O
=0V
I
=0V
V
O
Rated Value
Min.Max.
—
—
Typ.
—
—
10
Unit
8
pF
pF
6
Page 7
Semiconductor
NOTICE
The information contained herein can change without notice owing to product and/or technical improvements. Before using the product, please make sure that the information being referred to is up-todate.
The outline of action and examples for application circuits described herein have been chosen as an
explanation for the standard action and performance of the product. When planning to use the product,
please ensure that the external conditions are reflected in the actual circuit, assembly, and program
designs.
When designing your product, please use our product below the specified maximum ratings and within
the specified operating ranges including, but not limited to, operating voltage, power dissipation, and
operating temperature.
Oki assumes no responsibility or liability whatsoever for any failure or unusual or unexpected operation resulting from misuse, neglect, improper installation, repair, alteration or accident, improper handling, or unusual physical or electrical stress including, but not limited to, exposure to parameters beyond the specified maximum ratings or operation outside the specified operating range.
Neither indemnity against nor license of a third party’s industrial and intellectual property right, etc. is
granted by us in connection with the use of the product and/or the information and drawings contained
herein. No responsibility is assumed by us for any infringement of a third party’s right which may result
from the use thereof.
The products listed in this document are intended for use in general electronics equipment for commercial applications (e.g., office automation, communication equipment, measurement equipment, consumer
electronics, etc.). These products are not authorized for use in any system orapplication that requires
special or enhanced quality and reliability characteristics nor in any system or application where the
failure of such system or application may result in the loss or damage of property, or death or injury to
humans. Such applications include, but are not limited to, traffic and automotive equipment, safety devices, aerospace equipment, nuclear power control, medical equipment, and life-support systems.
Certain products in this document may need government approval before they can be exported to particular countries. The purchaser assumes the responsibility of determining the legality of export of these
products and will take appropriate and necessary steps at their own expense for these.
No part of the contents cotained herein may be reprinted or reproduced without our prior permission.
All brand, company and product names are the trademarks or registered trademarks of their respective
owners.
Copyright 1998 Oki Electric Industry Co., Ltd.
Page 8
ADDRESSES & SEMICONDUCTOR WEB SITES
OKI Electric Industry Co., Ltd.OKI Electric Industry Co., Ltd.
OKI Electric Industry Co., Ltd.,
OKI Electric Industry Co., Ltd.OKI Electric Industry Co., Ltd.
Device Business Group,
10-3, Shibaura, 4-chome,
Minato-ku, Tokyo 108, Japan,
Tel.: +81-(0)3-5445-6327,
Fax.: +81-(0)3-5445-6328,
http://www.oki.co.jp/OKI/DBG/english/index.htm
(NOTE: URL is case sensitive)
OKI Semiconductor GroupOKI Semiconductor Group
OKI Semiconductor Group,
OKI Semiconductor GroupOKI Semiconductor Group
785 North Mary Avenue,
Sunnyvale, CA 94086, U.S.A.,
Tel.: +1-408-720-1900,
Fax.: +1-408-720-1918,
http://www.okisemi.com/
OKI Electric Europe GmbHOKI Electric Europe GmbH
OKI Electric Europe GmbH,
OKI Electric Europe GmbHOKI Electric Europe GmbH
Head Office Europe,
Hellersbergstrasse 2,
D-41460 Neuss, Germany,
Tel: +49-2131-15960,
Fax: +49-2131-103539,
OKI Electronics (Hong Kong) Ltd.OKI Electronics (Hong Kong) Ltd.
Suite 1901-1&19, Tower 3,
China Hong Kong City,
33 Canton Road, Tsimshatsui,
Kowloon, Hong Kong,
Tel.: +852-2-736-2336,
Fax.: +852-2-736-2395