Datasheet MSM27C1655CZ Datasheet (OKI)

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Semiconductor

MSM27C1655CZ

524,288-Double Word x 32-Bit or 1,048,576-Word x 16-Bit
4-Double Word x 32-Bit or 8-Word x 16-Bit Page Mode One Time PROM

DESCRIPTION

The MSM27C1655CZ is a 16Mbit electrically Programmable Read-Only Memory with page mode.
Its configuration can be electrically switched between 524,288 double word x 32bit and 1,048,576
word x 16bit. The MSM27C1655CZ operates on a single +5V power supply and is TTL compatible.
The MSM27C1655CZ provides Page mode which can greatly reduce the read access time. Since
the MSM27C1655CZ operates asynchronously , external clocks are not required , making this device
easy-to-use. The MSM27C1655CZ is suitable as large-capacity fixed memory for microcomputers
and data terminals. It is manufactured using a CMOS double silicon gate technology and is offered in
70-pin SSOP , 70-pin TSOP packages.

FEATURES

• 524,288 double word x 32bit / 1,048,576 word x 16bit electrically switchable configuration

• Single +5V power supply

• Access time 100ns
Page mode access time 30ns

• Input / Output TTL compatible

• Three-state output

• Packages
70-pin plastic SSOP (SSOP70-P-500-0.80-K)
70-pin plastic TSOP (TSOPII70-P-400-0.65-K)

1A

1

PIN CONFIGURATION (TOP VIEW)

V

A0
A1
A2
A3
A4
A5

V

CC

D0

D16

D1

D17

V

SS

V

CC

D2

D18

D3

D19

D4

D20

D5

D21

V

SS

V

CC

D6

D22

D7

D23

V

SS

A6
A7
A8

A9
A10
A11
A12

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35

70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36

PP

NC
NC
WORD
OE
CE

V

SS

D31/A-1
D15
D30
D14
V

SS

V

CC

D29
D13
D28
D12
D27
D11
D26
D10
V

SS

V

CC

D25
D9
D24
D8

V

CC

NC
A18
A17
A16
A15
A14
A13

MSM27C1655CZ

PIN NAMES

FUNCTIONS

D31/A-1 Data output / Address input
A0 - A18 Address input
D0 - D30 Data output

CE
OE

V

CC

V

SS

WORD

V

PP

NC

Chip enable
Output enable
Power supply voltage

GND

Mode switch
Program power supply voltage
Non connection

70-pin SSOP , TSOP

2

MSM27C1655CZ

BLOCK DIAGRAM

A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18

Address Buffer

A-1

X16/X32 Switch

CE WORDOE

CE PGMOE

Row Decoder

Column Decoder

Memory Matrix

524,288X32-Bit or 1,048,576X16-Bit

Multiplexer & Page Data Latch

Output Buffer

FUNCTION TABLE

MODE
READ (32-Bit)
READ (16-Bit)

OUTPUT DISABLE

STAND-BY
PROGRAM

PROGRAM INHIBIT
PROGRAM VERIFY

* : Don't Care

3

D0

D2

D4

D6

D8

D10

D12

D14

D16

D18

D20

D22

D24

D1

D3

D5

D7

D9

D11

D13

D15

D17

D19

D21

D23

In 16-bit output mode, these pins are
three-stated and pin D31 functions
as the A-1 address pin.

CE OE

LL
L

L

LH

H

*

WORD

H

L

H

L

H

L

V

PP

LH
H H Hi-Z

L

11.5V

HL

V

CC

D16 - D30D0 - D15

D

D

4.5V

*

to

5.5V

OUT

Hi-Z
Hi-Z

Hi-Z

D

IN

Hi-Z

6.25V
D

OUT

Hi-Z

D25

OUT

D26

D27

D28

D29

D30

D31

D31/A-1

L/H

*

*

L/H

L/H

ABSOLUTE MAXIMUM RATINGS

MSM27C1655CZ

Parameter
Operating temperature under bias
Storage temperature

Input voltage
Output voltage
Power supply voltage
Program power supply voltage
Power dissipation per package

Symbol

Topr

T

stg

V

I

V

O

V

CC

V

PP

P

D

-

relative to V

-

SS

RECOMMENDED OPERATING CONDITIONS FOR READ

Parameter Symbol
VCC power supply voltage
VPP power supply voltage
Input "H" level
Input "L" level

Voltage is relative to Vss

V

CC

V

PP

V

IH

V

IL

Condition

VCC=4.5V-5.5V

0 to 70

-55 to 125
+ 0.5

CC

(Ta=0 to 70°C)

Min. Max.

4.5

-0.5

Typ.

-

-

-

-

5.5
+0.5

V

CC

+0.52.2

V

CC

0.8-0.5

UnitValueCondition

°C
°C

V-0.5 to V
V-0.5 to VCC + 0.5
V-0.5 to 7
V-0.5 to 12.5

W1.0

Unit

V
V
V
V

4

MSM27C1655CZ

ELECTRICAL CHARACTERISTICS (Read operation)

DC Characteristics

Parameter
Input leakage current
Output leakage current

V

power supply current

CC

(Standby)

V

power supply current

CC

(Read)
V

power supply current

PP

Input "H" level
Input "L" level
Output "H" level
Output "L" level

Voltage is relative to Vss

AC Characteristics

Parameter

Address access cycle time
Address access time
Page set up time
Page access cycle time
Page access time
CE access time
OE access time

Output disable time
Output hold time

NOTE(1) T

is defined as the end of either CE trailing edge or address transition in random access

PSET

term until the first page address transition.

Symbol

I

LI

I

LO

I

CS1

I

CS2

I

CCA

I

PP

V

IH

V

IL

V

OH

V

OL

Symbol

T

C

T

ACC

T

PSET

T

PC

T

PAC

T

CE

T

OE

T

CHZ

T

OHZ

T

OH

VI=0 to Vcc

VO=0 to Vcc

CE=V

IL ,

tc=100ns

I

CE=OE=V

CE=OE=V

CE=V

CE=V
OE=V

V

PP=VCC

-

-

=-400µA

OH

=2.1mA

OL

Condition

-

NOTE(1)

-

­OE=V
CE=V
OE=V
CE=V

CC

IH
IH

IL
IL
IL
IL

=5V±0.5V, Ta=0 to 70°C)

(V

CC

Min. Max.

2.2

-0.5 V

2.4

(V

IL

IL

Typ.

-

-

-

-

-mA

-

-

CC

-

-

-

-

-

-

-

-

-

10
10
50

1

120

10

VCC+0.5

0.8

-

0.45

=5V±0.5V, Ta=0 to 70°C)

Min. Max.
100

-

120

30

-

-

-

0
0
0

-

100

-

-

30

100

30
30
25

-

UnitCondition

µA
µA
µA

mA

µA

V

V
VI

Unit

ns
ns
ns
ns
ns
ns
ns
ns
ns
ns

Measurement conditions
Input signal level
Input timing reference level
Output load
Output timing reference level

Output

5

0V/3V

0.8V/2.0V

1TTL gate + 100pF

0.8V/2.0V

1.7V

400

100pF (including jig capacitance)

TIMING CHART

NORMAL MODE READ CYCLE

ADDRESS

CE

OE

MSM27C1655CZ

t

C

t

t

CE

t

OE

OH

t

CHZ

DOUT

PAGE MODE READ CYCLE

A2 - A18

A0 - A1 (X32 mode)
A-1 - A1 (X16 mode)

CE

t

t

CE

t

C

PSET

t

PSET

t

OE

t

ACC

t

OHZ

Valid Data

Hi-ZHi-Z

t

PC

t

PC

t

OH

t

CHZ

OE

DOUT

Hi-Z

t

ACC

t

PAC

t

PAC

t

OHZ

Hi-Z

6

MSM27C1655CZ

ELECTRICAL CHARACTERISTICS (Programming operation)

DC Characteristics

Parameter
Input leakage current
V

power supply current (Program)

PP

power supply current

V

CC

Input "H" level
Input "L" level
Output "H" level
Output "L" level
Program voltage
V

power supply voltage

CC

Voltage is relative to Vss

Symbol

I

LI

I

PP2

I

CC

V

IH

V

IL

V

OH

V

OL

V

PP

V

CC

Condition

V

I=VCC

CE=V

=2.1mA

I

OL

+0.5V

IL

-

-

-

-

(Ta=25°C±5°C)

Min. Max.

-

-

-

2.2

-0.5

2.4

-

6.0

Typ.

-

-

--

-

-

-

-

11.5

6.25

10
50

100

VCC+0.5

0.8

-

0.45

11.7511.25

6.5

Unit

µA
mA
mA

V
V

VIOH=-400µA
V
V
V

AC Characteristics

Parameter
Address set-up time
OE set-up time
Data set-up time

Address hold time
Data hold time
Output float delay from OE

voltage set-up time

V

PP

Program pulse width
Data valid from OE

Symbol

T

AS

T

OES

T

DS

T

AH

T

DH

T

DFP

T

VS

T

PW

T

OE

(V

=6.25V±0.25V,Vpp=11.5V±0.25V,Ta=25°C±5°C)

cc

Condition

-

-

-

-

-

-

-

Min. Max.

2
2
2
0
2 µs
0
2

-

Typ.

-

-

--

-

-

-

-

25

--

-

-

-

-

-

130

-

2723

150

Unit

µs
µs

µs
µs

ns

µs
µs

ns

7

Programming Waveform

A-1 - A18

CE

MSM27C1655CZ

t

t

DFP

AH

t

AS

t

PW

t

OES

OE

D0 - D15

V

PP

D16 - D30

PIN Capacitance

Parameter

Input
V

PP

Output

t

DS

D

IN

t

VS

Program

t

DH

t

OE

D

OUT

Program Verify

Hi-Z

(VCC=5V, Ta=25°C, f=1MHz)

Symbol

C

IN1

C

IN2

C

OUT

Condition

=0V

V

I

=0V

V

O

Min. Max.

-

Typ.

-

--

--

12
60
15

Unit

pF

8

MSM27C1655CZ

High Speed Programming Algorithm ( I )

Start

First Address

VCC=6.25V

VPP=11.5V

X=0

Increment Address

NG

NO

X=10 ?

NO

Program 25µs

X=X+1

Verify (One Byte)

PASS

Last Address ?

YES

VCC=5.5V
V

=5.5V

PP

Compare All

YES

NG

PASS

VCC=4.5V

V

=4.5V

PP

Compare All

NG

Device Failed

PASS

Device Passed

9

High Speed Programming Algorithm ( II )

First Address

VCC=6.25V

V

Program 25µs

Start

=11.5V

PP

MSM27C1655CZ

Increment Address

Increment Address

NO

Last Address ?

First Address

Verify (One Byte)

NO

Last Address ?

Compare All

YES

X=0

PASS

YES

VCC=5.5V

V

=5.5V

PP

NG

NG

X=X+1

YES

X=10 ?

NO

Program 25µs

PASS

VCC=4.5V

V

=4.5V

PP

Compare All

PASS

Device Passed

NG

Device Failed

10

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.

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