REV. 1.6, JUL. 19, 2001

P/N: PM00694

PIN CONFIGURATIONS

32 PDIP/SOP

PIN DESCRIPTION

FEATURES

512K x 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: 40mA

Standby current: 100uA

Package type:

- 32 pin PDIP
- 32 pin PLCC
- 32 pin SOP
- 32 pin TSOP

SYMBOL

PIN NAME

A0~A18

Address Input

Q0~Q7

Data Input/Output

Chip Enable Input

Output Enable Input

VPP

Program Supply Voltage

VCC

Power Supply Pin (+5V)

GND

Ground Pin

MX27C4000A

4M-BIT [512K x8] CMOS OTP ROM

MX27C4000A

VPP

A16

A15

A12

GND

VCC

A18

A17

A14

A13

A11

A10

PRELIMINARY

A14

A13

A11

A10

GND

A12

A15

A16

VPP

VCC

A18

A17

MX27C4000A

32 PLCC

A11

A9
A8

A13
A14
A17
A18

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

MX27C4000A

32 TSOP

GENERAL DESCRIPTION

The MX27C4000A is a 5V only, 4M-bit, One Time
Programmable Read Only Memory. It is organized as
512K 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 MX27C4000A
supports a intelligent fast programming algorithm which
can result in programming time of less than two minutes.

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

MX27C4000A

REV. 1.6, JUL. 19, 2001

P/N: PM00694

FUNCTIONAL DESCRIPTION

THE PROGRAMMING OF THE MX27C4000A

When the MX27C4000A is delivered, or it is erased,
the chip has all 4M bits in the "ONE" or HIGH state.
"ZEROs" are loaded into the MX27C4000A 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 01uF 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 = 6.25 V and OE = VIH (Algorithm is shown in
Figure 1). The programming is achieved by applying a
single TTL low level 10us pulse to the CE 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 MX27C4000As 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 MX27C4000A may be common. A
TTL low-level program pulse applied to an
MX27C4000A CE input with VPP = 12.5

0.5 V and CE

LOW will program that MX27C4000A. A high-level CE
input inhibits the other MX27C4000As 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, and VPP at its programming voltage.

AUTO IDENTIFY MODE

The auto identify mode allows the reading out of a binary
code from an OTP ROM 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 MX27C4000A.

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
MX27C4000A, 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 MX27C4000A has two control functions, both of
which must be logically satisfied in order to obtain data

CONTROL

LOGIC

OUTPUT

BUFFERS

Q0~Q7

A0~A18

ADDRESS

INPUTS

Y-DECODER

X-DECODER

Y-SELECT

4M BIT

CELL

MAXTRIX

VCC

VSS

BLOCK DIAGRAM

MX27C4000A

REV. 1.6, JUL. 19, 2001

P/N: PM00694

NOTES:
1. VH = 12.0 V

0.5 V

2. X = Either VIH or VIL
3. A1 - A8 = A10 - A18 = VIL(For auto select)
4. See DC Programming Characteristics for VPP voltage during programming.

MODE SELECT TABLE

PINS

MODE

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

VPP

DIN

Program Verify

VIH

VIL

VPP

DOUT

Program Inhibit

VIH

VPP

High Z

Manufacturer Code(3)

VIL

VCC

C2H

Device Code(3)

VIL

VIH

VCC

C0H

at the outputs. Chip Enable (CE) is the power control
and should be used for device selection. Output Enable
(OE) 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's, assuming that CE has been LOW and
addresses have been stable for at least tACC - tOE.

STANDBY MODE

The MX27C4000A 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 MX27C4000A 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.

MX27C4000A

REV. 1.6, JUL. 19, 2001

P/N: PM00694

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 sub-
ject 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

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

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

MX27C4000A

-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

MX27C4000A

REV. 1.6, JUL. 19, 2001

P/N: PM00694

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 = 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

tOE

Data valid from OE

150

AC CHARACTERISTICS

27C4000A-90 27C4000A-10 27C4000A-12

27C4000A-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

MX27C4000A

REV. 1.6, JUL. 19, 2001

P/N: PM00694

ORDERING INFORMATION

PLASTIC PACKAGE

PART NO.

ACCESS TIME

OPERATING

STANDBY

OPERATING

PACKAGE

(ns)

Current MAX.(mA)

Current MAX.(uA)

TEMPERATURE

MX27C4000APC-90

100

C to 70

32 Pin DIP

MX27C4000AQC-90

100

C to 70

32 Pin PLCC

MX27C4000AMC-90

100

C to 70

32 Pin SOP

MX27C4000ATC-90

100

C to 70

32 Pin TSOP

MX27C4000APC-10

100

C to 70

32 Pin DIP

MX27C4000AQC-10

100

C to 70

32 Pin PLCC

MX27C4000AMC-10

100

C to 70

32 Pin SOP

MX27C4000ATC-10

100

C to 70

32 Pin TSOP

MX27C4000APC-12

120

100

C to 70

32 Pin DIP

MX27C4000AQC-12

120

100

C to 70

32 Pin PLCC

MX27C4000AMC-12

120

100

C to 70

32 Pin SOP

MX27C4000ATC-12

120

100

C to 70

32 Pin TSOP

MX27C4000APC-15

150

100

C to 70

32 Pin DIP

MX27C4000AQC-15

150

100

C to 70

32 Pin PLCC

MX27C4000AMC-15

150

100

C to 70

32 Pin SOP

MX27C4000ATC-15

150

100

C to 70

32 Pin TSOP

MX27C4000API-90

100

-40

C to 85

32 Pin DIP

MX27C4000AQI-90

100

-40

C to 85

32 Pin PLCC

MX27C4000AMI-90

100

-40

C to 85

32 Pin SOP

MX27C4000ATI-90

100

-40

C to 85

32 Pin TSOP

MX27C4000API-10

100

-40

C to 85

32 Pin DIP

MX27C4000AQI-10

100

-40

C to 85

32 Pin PLCC

MX27C4000AMI-10

100

-40

C to 85

32 Pin SOP

MX27C4000ATI-10

100

-40

C to 85

32 Pin TSOP

MX27C4000API-12

120

100

-40

C to 85

32 Pin DIP

MX27C4000AQI-12

120

100

-40

C to 85

32 Pin PLCC

MX27C4000AMI-12

120

100

-40

C to 85

32 Pin SOP

MX27C4000ATI-12

120

100

-40

C to 85

32 Pin TSOP

MX27C4000API-15

150

100

-40

C to 85

32 Pin DIP

MX27C4000AQI-15

150

100

-40

C to 85

32 Pin PLCC

MX27C4000AMI-15

150

100

-40

C to 85

32 Pin SOP

MX27C4000ATI-15

150

100

-40

C to 85

32 Pin TSOP

MX27C4000A

REV. 1.6, JUL. 19, 2001

P/N: PM00694

REVISION HISTORY

Revision No. Description

Page

Date

1.1

Modify Fast Programming Flowchart--Program One 100us Pulse

JUL/06/2000

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

1.2

Cencel 150ns speed

P1,5,6,7,10

JUL/13/2000

Add "Advance Information"

1.3

Add tPW(MAX.):50us

SEP/01/2000

1.4

Modify Absolute Naximum Ratings--Ambient Operation

SEP/08/2000

Temperature 0

C to 70

C --> -40

C to 85

Add Package type: 32PLCC

P1,9

Add Order Information--> -40

C to 85

C Operating Temperature

Del Fast access time:100ns

P1,6,7

1.5

To added access time 100/150ns and 32SOP/TSOP type package P1,6,7,9,11

MAR/19/2001

To changed ID Code from 41H to C0H

1.6

To modify Package Information

P10~13

JUL/19/2001

MX27C4000A

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

JAPAN OFFICE:

TEL:+81-44-246-9100

FAX:+81-44-246-9105

SINGAPORE OFFICE:

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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