Datasheet MSM27C852CZ Datasheet (OKI)

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Semiconductor

MSM27C852CZ

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

DESCRIPTION

The MSM27C852CZ is a 8Mbit electrically Programmable Read-Only Memory with page mode. Its

configuration can be electrically switched between 524,288 word x 16bit and 1,048,576 word x 8bit.
The MSM27C852CZ operates on a single +5V power supply and is TTL compatible. The MSM27C8
52CZ provides Page mode which can greatly reduce the read access time. Since the MSM27C852
CZ operates asynchronously , external clocks are not required , making this device easy-to-use. The
MSM27C852CZ 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 42-pin DIP , 44-pin
SOP or 44-pin TSOP packages.

FEATURES

• 524,288 word x 16bit / 1,048,576 word x 8bit electrically switchable configuration

• Single +5V power supply

• Access time 100ns
Page mode access time 50ns

• Input / Output TTL compatible

• Three-state output

• Packages 42-pin plastic DIP (DIP42-P-600-2.54)
44-pin plastic SOP (SOP44-P-600-1.27-K)
44-pin plastic TSOP (TSOP II 44-P-400-0.80-K)

1A

1

PIN CONFIGURATION (TOP VIEW)

MSM27C852CZ

A18
A17

A7
A6
A5
A4
A3
A2
A1
A0

CE

V

SS

OE

D0
D8
D1
D9
D2

D10

D3

D11

10
11
12
13
14
15
16
17
18
19
20
21

NC

1
1
2
3
4
5
6
7
8
9

NC

42

A8

41

A9

40

A10

39

A11

38

A12

37

A13

36

A14

35

A15

34

A16

33
32

BYTE/Vpp
V

31

D15/A-1

30

D7

29

D14

28

D6

27

D13

26

D5

25

D12

24

D4

23

V

22

SS

CC

A18
A17

A7
A6
A5
A4
A3
A2
A1
A0

CE

V

SS

OE

D0
D8
D1
D9
D2

D10

D3

D11

2

3

4

5

6

7

8

9

10
11
12
13
14
15
16
17
18
19
20
21

NC

44

NC

43

A8

42

A9

41

A10

40

A11

39

A12

38

A13

37

A14

36

A15

35

A16

34
33

BYTE/Vpp
V

32

D15/A-1

31

D7

30

D14

29

D6

28

D13

27

D5

26

D12

25

D4

24

V

2322

SS

CC

NC
A18
A17

A7
A6
A5
A4
A3
A2
A1
A0

CE
V

SS

OE

D0
D8
D1
D9
D2

D10

D3

D11

10
11
12
13
14
15
16
17
18
19
20
21

NC

1
2
3
4
5
6
7
8
9

44

NC

43

A8

42

A9

41

A10

40

A11

39

A12

38

A13

37

A14

36

A15

35

A16

34
33

BYTE/Vpp
V

32

D15/A-1

31

D7

30

D14

29

D6

28

D13

27

D5

26

D12

25

D4

24

V

2322

SS

CC

42-pin DIP

44-pin SOP

PIN NAMES

FUNCTIONS

D15/A-1 Data output / Address input
A0 - A18 Address input
D0 - D14 Data output

CE
OE

V

CC

V

SS

BYTE/V

NC

PP

Chip enable
Output enable
Power supply voltage
GND
Mode switch / Program power supply voltage
Non connection

44-pin TSOP

2

MSM27C852CZ

BLOCK DIAGRAM

A-1

X8/X16 Switch

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

Address Buffer

CE BYTE/V

OE

CE PGMOE

Memory Matrix

Row Decoder

524,288X16-Bit or 1,048,576X8-Bit

Multiplexer & Page Data Latch

Column Decoder

Output Buffer

D0

D1D2D3D4D5D6D7D8D9

PP

D10

D11

D12

D13

D14

D15

FUNCTION TABLE

MODE
READ (16-Bit)
READ (8-Bit)

OUTPUT DISABLE

STAND-BY
PROGRAM

PROGRAM INHIBIT
PROGRAM VERIFY

* : Don't Care
3

In 8-bit output mode, these pins are
three-stated and pin D15 functions
as the A-1 address pin.

PP

V

CC

4.5V
to

5.5V

6.25V

D

OUT

D8 - D14D0 - D7

D

Hi-Z
Hi-Z

Hi-Z

D

D

L

H

*

BYTE/V

H

L

H

L

H

L

CE OE

LL
L

L

H
LH

H H Hi-Z

11.5V

HL

D15/A-1

OUT

L/H

*

*

IN

OUT

ABSOLUTE MAXIMUM RATINGS

MSM27C852CZ

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

MSM27C852CZ

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

Random 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

IL
IL
IL

IL

=5V±0.5V, Ta=0 to 70°C)

(V

CC

Min. Max.

IH

2.2

-0.5 V

(V

IL

IL

Typ.

-

-

-

-

-mA

-

-

-

-

-

-

-

-

-

10
10
50

100

10

VCC+0.5

0.8

-

-

CC

-

0.45

=5V±0.5V, Ta=0 to 70°C)

Min. Max.

100

-

120

50

-

-

-

0
0
0

-

100

-

-

50

100

50
40
35

-

UnitCondition

µA
µA
µA

1

mA

µA

V

-2.4

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

MSM27C852CZ

t

C

t

t

CE

t

OE

OH

t

CHZ

DOUT

PAGE MODE READ CYCLE

A3 - A18

A0 - A2 (Word mode)
A-1 - A2 (Byte 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

MSM27C852CZ

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

-

-

-

-

Min. Max.

-

-

-

2.2

-0.5

2.4

-

6.0

Typ.

-

-

--

-

-

-

-

11.5

6.25

(Ta=25°C±5°C)

Unit

10
50
70

VCC+0.5

0.8

-

0.45

11.7511.25

6.5

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
VPP voltage set-up time
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

A0 - A18

t

CE

AS

t

PW

t

OES

t

t

DFP

MSM27C852CZ

AH

OE

D0 - D15

BYTE/V

PP

PIN Capacitance

Parameter

Input
BYTE/V

Output

PP

t

DS

D

IN

t

VS

Program

t

DH

t

OE

D

OUT

Program Verify

(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

MSM27C852CZ

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
VPP=11.5V

Program 25µs

MSM27C852CZ

Start

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.

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.

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Copyright 1998 Oki Electric Industry Co., Ltd.

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