PIN DESCRIPTION

REV. 2.0, AUG. 27, 2003

P/N: PM0708

FEATURES

256Kx 8 organization

Single +5V power supply

+12.5V programming voltage

Fast access time:90/100/120/150 ns

Totally static operation

Completely TTL compatible

Operating current:30mA

Standby current: 100uA

Package type:

- 32 pin plastic DIP
- 32 pin PLCC
- 32 pin SOP
- 32 pin TSOP

PIN CONFIGURATIONS

32 PDIP/SOP

32 PLCC

SYMBOL

PIN NAME

A0~A17

Address Input

Q0~Q7

Data Input/Output

Chip Enable Input

Output Enable Input

PGM

Programmable Enable Input

VPP

Program Supply Voltage

No Internal Connection

VCC

Power Supply Pin (+5V)

GND

Ground Pin

MX27C2000A

2M-BIT [256K x 8] CMOS EPROM

MX27C2000A

VPP

A16

A15

A12

GND

VCC

PGM

A17

A14

A13

A11

A10

A14

A13

A11

A10

GND

A12

A15

A16

VPP

VCC

PGM

A17

MX27C2000A

PRELIMINARY

GENERAL DESCRIPTION

The MX27C2000A is a 5V only, 2M-bit, One Time
Programmable Read Only Memory. It is organized as
256K words by 8 bits per word, operates from a single +
5 volt supply, has a static standby mode, and features
fast single address location programming. All program-
ming signals are TTL levels, requiring a single pulse. For
programming outside from the system, existing EPROM

programmers may be used. The MX27C2000A supports
a intelligent fast programming algorithm which can result
in programming time of less than one minute.

This One Time Programmable Read Only is packaged in
industry standard 32 pin dual-in-line packages, 32 lead
PLCC, 32 lead SOP, 32 lead TSOP packages.

A11

A9
A8

A13
A14
A17

PGM

VCC

VPP

A16
A15
A12

A7
A6
A5
A4

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16

OE
A10
CE
Q7
Q6
Q5
Q4
Q3
GND
Q2
Q1
Q0
A0
A1
A2
A3

32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17

MX27C2000A

32 TSOP

REV. 2.0, AUG. 27, 2003

P/N: PM0708

MX27C2000A

BLOCK DIAGRAM

CONTROL

LOGIC

OUTPUT

BUFFERS

Q0~Q7

PGM

A0~A17

ADDRESS

INPUTS

Y-DECODER

X-DECODER

Y-SELECT

2M BIT

CELL

MAXTRIX

VCC

VSS

VPP

FUNCTIONAL DESCRIPTION

THE PROGRAMMING OF THE MX27C2000A

When the MX27C2000A is delivered, or it is erased, the
chip has all 2M bits in the "ONE", or HIGH state.
"ZEROs" are loaded into the MX27C2000A through the
procedure of programming.

For programming, the data to be programmed is applied
with 8 bits in parallel to the data pins.

VCC must be applied simultaneously or before VPP, and
removed simultaneously or after VPP. When
programming an MXIC OTP ROM, a 0.1uF capacitor is
required across VPP and ground to suppress spurious
voltage transients which may damage the device.

FAST PROGRAMMING

The device is set up in the fast programming mode when
the programming voltage VPP = 12.75V is applied, with
VCC = 6.25V and PGM = VIH (Algorithm is shown in
Figure 1). The programming is achieved by applying a
single TTL low level 10us pulse to the PGM input after
addresses and data line are stable. If the data is not
verified, an additional pulse is applied for a maximum of
25 pulses. This process is repeated while sequencing
through each address of the device. When the
programming mode is completed, the data in all address
is verified at VCC = VPP = 5V

10%.

PROGRAM INHIBIT MODE

Programming of multiple MX27C2000As in parallel with
different data is also easily accomplished by using the
Program Inhibit Mode. Except for CE and OE, all like
inputs of the parallel MX27C2000A may be common. A
TTL low-level program pulse applied to an MX27C2000A
CE input with VPP = 12.5

0.5 V and PGM LOW will

program that MX27C2000A. A high-level CE input
inhibits the other MX27C2000A from being programmed.

PROGRAM VERIFY MODE

Verification should be performed on the programmed bits
to determine that they were correctly programmed. The
verification should be performed with OE and CE at VIL,
PGM at VIH, and VPP at its programming voltage.

AUTO IDENTIFY MODE

The auto identify mode allows the reading out of a binary
code from an EPROM that will identify its manufacturer
and device type. This mode is intended for use by
programming equipment for the purpose of automatically
matching the device to be programmed with its
corresponding programming algorithm. This mode is
functional in the 25

C ambient temperature range

that is required when programming the MX27C2000A.

To activate this mode, the programming equipment must
force 12.0

0.5 V on address line A9 of the device. Two

identifier bytes may then be sequenced from the device
outputs by toggling address line A0 from VIL to VIH. All
other address lines must be held at VIL during auto
identify mode.

Byte 0 ( A0 = VIL) represents the manufacturer code, and
byte 1 (A0 = VIH), the device identifier code. For the
MX27C2000A, these two identifier bytes are given in the
Mode Select Table. All identifiers for manufacturer and
device codes will possess odd parity, with the MSB (Q7)
defined as the parity bit.

READ MODE

The MX27C2000A has two control functions, both of
which must be logically satisfied in order to obtain data
at the outputs. Chip Enable (CE) is the power control and
should be used for device selection. Output Enable (OE)

REV. 2.0, AUG. 27, 2003

P/N: PM0708

MX27C2000A

is the output control and should be used to gate data to
the output pins, independent of device selection.
Assuming that addresses are stable, address access
time (tACC) is equal to the delay from CE to output (tCE).
Data is available at the outputs tOE after the falling edge
of OE, assuming that CE has been LOW and addresses
have been stable for at least tACC - tOE.

STANDBY MODE

The MX27C2000A has a CMOS standby mode which
reduces the maximum VCC current to 100 uA. It is
placed in CMOS standby when CE is at VCC

0.3 V. The

MX27C2000A also has a TTL-standby mode which
reduces the maximum VCC current to 1.5 mA. It is
placed in TTL-standby when CE is at VIH. When in
standby mode, the outputs are in a high-impedance
state, independent of the OE input.

TWO-LINE OUTPUT CONTROL FUNCTION

To accommodate multiple memory connections, a two-
line control function is provided to allow for:

1. Low memory power dissipation,
2. Assurance that output bus contention will not
occur.

It is recommended that CE be decoded and used as the
primary device-selecting function, while OE be made a
common connection to all devices in the array and
connected to the READ line from the system control bus.
This assures that all deselected memory devices are in
their low-power standby mode and that the output pins
are only active when data is desired from a particular
memory device.

SYSTEM CONSIDERATIONS

During the switch between active and standby
conditions, transient current peaks are produced on the
rising and falling edges of Chip Enable. The magnitude
of these transient current peaks is dependent on the
output capacitance loading of the device. At a minimum,
a 0.1 uF ceramic capacitor (high frequency, low inherent
inductance) should be used on each device between Vcc
and GND to minimize transient effects. In addition, to
overcome the voltage drop caused by the inductive
effects of the printed circuit board traces on EPROM
arrays, a 4.7 uF bulk electrolytic capacitor should be
used between VCC and GND for each eight devices. The
location of the capacitor should be close to where the
power supply is connected to the array.

NOTES:
1.VH = 12.0 V

0.5 V

2.X = Either VIH or VIL
3.A1 - A8 = A10 - A17 = VIL(For auto select)
4.See DC Programming Characteristics for VPP voltage during programming.

MODE SELECT TABLE

PINS

MODE

PGM

VPP

OUTPUTS

Read

VIL

VCC

DOUT

Output Disable

VIL

VIH

VCC

High Z

Standby (TTL)

VIH

VCC

High Z

Standby (CMOS)

VCC

0.3V

VCC

High Z

Program

VIL

VIH

VIL

VPP

DIN

Program Verify

VIL

VIH

VPP

DOUT

Program Inhibit

VIH

VPP

High Z

Manufacturer Code(3)

VIL

VCC

C2H

Device Code(3)

VIL

VIH

VCC

C3H

REV. 2.0, AUG. 27, 2003

P/N: PM0708

MX27C2000A

DC CHARACTERISTICS

SYMBOL

PARAMETER

MIN.

MAX.

UNIT

CONDITIONS

VOH

Output High Voltage

2.4

IOH = -0.4mA

VOL

Output Low Voltage

0.4

IOL = 2.1mA

VIH

Input High Voltage

2.0

VCC + 0.5

VIL

Input Low Voltage

-0.3

0.8

ILI

Input Leakage Current

-10

VIN = 0 to 5.5V

ILO

Output Leakage Current

-10

VOUT = 0 to 5.5V

ICC3

VCC Power-Down Current

100

CE = VCC

0.3V

ICC2

VCC Standby Current

1.5

CE = VIH

ICC1

VCC Active Current

CE = VIL, f=5MHz, Iout = 0mA

IPP

VPP Supply Current Read

CE = OE = VIL, VPP = 5.5V

NOTICE:
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 period may affect reliability.

NOTICE:
Specifications contained within the following tables are
subject to change.

ABSOLUTE MAXIMUM RATINGS

RATING

VALUE

Ambient Operating Temperature

-40

C to 85

Storage Temperature

-65

C to 125

Applied Input Voltage

-0.5V to 7.0V

Applied Output Voltage

-0.5V to VCC + 0.5V

VCC to Ground Potential

-0.5V to 7.0V

A9 & VPP

-0.5V to 13.5V

CAPACITANCE

TA = 25

C, f = 1.0 MHz (Sampled only)

SYMBOL

PARAMETER

TYP.

MAX.

UNIT

CONDITIONS

CIN

Input Capacitance

VIN = 0V

COUT

Output Capacitance

VOUT = 0V

CVPP

VPP Capacitance

VPP = 0V

MX27C2000A

-90

-10

-12

-15

Operating Temperature Industrial

-40

C to 85

-40

C to 85

-40

C to 85

-40

C to 85

Vcc Power Supply

10%

DC/AC OPERATING CONDITION FOR READ OPERATION

REV. 2.0, AUG. 27, 2003

P/N: PM0708

MX27C2000A

DC PROGRAMMING CHARACTERISTICS

TA = 25

SYMBOL

PARAMETER

MIN.

MAX.

UNIT

CONDITIONS

VOH

Output High Voltage

2.4

IOH = -0.40mA

VOL

Output Low Voltage

0.4

IOL = 2.1mA

VIH

Input High Voltage

2.0

VCC + 0.5

VIL

Input Low Voltage

-0.3

0.8

ILI

Input Leakage Current

-10

VIN = 0 to 5.5V

A9 Auto Select Voltage

11.5

12.5

ICC3

VCC Supply Current (Program & Verify)

IPP2

VPP Supply Current(Program)

CE = PGM = VIL,

OE = VIH

VCC1

Fast Programming Supply Voltage

6.00

6.50

VPP1

Fast Programming Voltage

12.5

13.0

AC PROGRAMMING CHARACTERISTICS

TA = 25

SYMBOL

PARAMETER

MIN.

MAX.

UNIT

CONDITIONS

tAS

Address Setup Time

2.0

tOES

OE Setup Time

2.0

tDS

Data Setup Time

2.0

tAH

Address Hold Time

tDH

Data Hold Time

2.0

tDFP

Output Enable to Output Float Delay

130

tVPS

VPP Setup Time

2.0

tPW

PGM Program Pulse Width

tVCS

VCC Setup Time

2.0

tCES

CE Setup Time

2.0

tOE

Data valid from OE

150

AC CHARACTERISTICS

27C2000A-90 27C2000A-10 27C2000A-12 27C2000A-15

Symbol PARAMETER

MIN.

MAX. MIN.

MAX.

MIN.

MAX.

MIN.

MAX. Unit Conditions

tACC

Address to Output Delay

100

120

150

CE=OE=VIL

tCE

Chip Enable to Output Delay

100

120

150

OE=VIL

tOE

Output Enable to Output Delay

CE=VIL

tDF

OE High to Output Float,

or CE High to Output Float

tOH

Output Hold from Address,CE or

OE which ever occurred first

REV. 2.0, AUG. 27, 2003

P/N: PM0708

MX27C2000A

ORDERING INFORMATION

PLASTIC PACKAGE

PART NO.

ACCESS TIME

OPERATING

STANDBY

OPERATING

PACKAGE

(ns)

Current MAX.(mA)

Current MAX.(uA)

TEMPERATURE

MX27C2000APC-90

100

C to 70

32 Pin DIP

MX27C2000AQC-90

100

C to 70

32 Pin PLCC

MX27C2000AMC-90

100

C to 70

32 Pin SOP

MX27C2000ATC-90

100

C to 70

32 Pin TSOP

MX27C2000APC-10

100

C to 70

32 Pin DIP

MX27C2000AQC-10

100

C to 70

32 Pin PLCC

MX27C2000AMC-10

100

C to 70

32 Pin SOP

MX27C2000ATC-10

100

C to 70

32 Pin TSOP

MX27C2000APC-12

120

100

C to 70

32 Pin DIP

MX27C2000AQC-12

120

100

C to 70

32 Pin PLCC

MX27C2000AMC-12

120

100

C to 70

32 Pin SOP

MX27C2000ATC-12

120

100

C to 70

32 Pin TSOP

MX27C2000APC-15

150

100

C to 70

32 Pin DIP

MX27C2000AQC-15

150

100

C to 70

32 Pin PLCC

MX27C2000AMC-15

150

100

C to 70

32 Pin SOP

MX27C2000ATC-15

150

100

C to 70

32 Pin TSOP

MX27C2000API-90

100

-40

C to 85

32 Pin DIP

MX27C2000AQI-90

100

-40

C to 85

32 Pin PLCC

MX27C2000AMI-90

100

-40

C to 85

32 Pin SOP

MX27C2000ATI-90

100

-40

C to 85

32 Pin TSOP

MX27C2000API-10

100

-40

C to 85

32 Pin DIP

MX27C2000AQI-10

100

-40

C to 85

32 Pin PLCC

MX27C2000AMI-10

100

-40

C to 85

32 Pin SOP

MX27C2000ATI-10

100

-40

C to 85

32 Pin TSOP

MX27C2000API-12

120

100

-40

C to 85

32 Pin DIP

MX27C2000AQI-12

120

100

-40

C to 85

32 Pin PLCC

MX27C2000AMI-12

120

100

-40

C to 85

32 Pin SOP

MX27C2000ATI-12

120

100

-40

C to 85

32 Pin TSOP

MX27C2000API-15

150

100

-40

C to 85

32 Pin DIP

MX27C2000AQI-15

150

100

-40

C to 85

32 Pin PLCC

MX27C2000AMI-15

150

100

-40

C to 85

32 Pin SOP

MX27C2000ATI-15

150

100

-40

C to 85

32 Pin TSOP

REV. 2.0, AUG. 27, 2003

P/N: PM0708

MX27C2000A

REVISION HISTORY

Revision No. Description

Page

Date

1.1

Cencel 70/90ns speed

P1,6,7,10

MAY/11/2000

Cancel SOP/TSOP package type

P1,6,7,10,11

Add "Advance Information"

1.2

Modify Fast Programming Flowchart--Program One 100us Pulse

JUL/06/2000

-->10us Pulse
Modify AC Programming Characteristics--tPW 95-->10(MIN.)

1.3

Cencel 150ns speed

P1,5,6,7,10

JUL/13/2000

1.4

Add tPW(MAX.):50us

SEP/01/2000

1.5

Modify Fast access time:100-->90

SEP/08/2000

Modify Absolute Naximum Ratings--Ambient Operation Temperature P6
0

C to 70

C --> -40

C to 85

Modify AC Characteristics tACC&tEC:100-->90 ; tOE:45-->40 ;

tDF:30-->25
Add Order Information--> -40

C to 85

C Operating Temperature

1.6

Change device ID code from 21H to C3H

DEC/28/2000

1.7

To change data sheet title to Preliminary

MAR/15/2001

To added access time 100/150ns and 32SOP/TSOP type package P1,6,7,9

1.8

To modify Package Information

P10~13

JUL/19/2001

1.9

To modify Package Information

P10~13

NOV/20/2002

2.0

To modify 32-PLCC package information

P12

AUG/27/2003

A1: from 0.50mm(0.020 inch)/nom. to 0.58mm(0.023 inch)/nom.

from 0.66mm(0.026 inch)/nom. to 0.81mm(0.032 inch)/nom.

MX27C2000A

ACRONIX

NTERNATIONAL

O.,

TD.

HEADQUARTERS:

TEL:+886-3-578-6688

FAX:+886-3-563-2888

EUROPE OFFICE:

TEL:+32-2-456-8020

FAX:+32-2-456-8021

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TEL:+81-44-246-9100

FAX:+81-44-246-9105

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TEL:+65-348-8385

FAX:+65-348-8096

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TEL:+886-2-2509-3300

FAX:+886-2-2509-2200

ACRONIX

MERICA,

NC.

TEL:+1-408-453-8088

FAX:+1-408-453-8488

CHICAGO OFFICE:

TEL:+1-847-963-1900

FAX:+1-847-963-1909

http : //www.macronix.com

MACRONIX INTERNATIONAL CO., LTD. reserves the right to change product and specifications without notice.

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