FEATURES

128K 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: 30mA

Standby current: 100uA

Package type:

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

REV. 1.3, AUG. 27, 2003

P/N: PM0733

GENERAL DESCRIPTION

The MX27C1000A is a 5V only, 1M-bit, One Time
Programmable Read Only Memory. It is organized as
128K 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 MX27C1000A supports
an intelligent fast programming algorithm which can
result in programming time of less than thirty seconds.

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

PIN CONFIGURATIONS
32 PDIP/SOP

32 PLCC

MX27C1000A

1M-BIT [128K x 8] CMOS EPROM

PRELIMINARY

MX27C1000A

VPP

A16

A15

A12

GND

VCC

PGM

A14

A13

A11

A10

A14

A13

A11

A10

GND

A12

A15

A16

VPP

VCC

PGM

MX27C1000A

PIN DESCRIPTION

SYMBOL

PIN NAME

A0~A16

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

32 TSOP

A11

A9
A8

A13
A14

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

MX27C1000A

MX27C1000A

REV. 1.3, AUG. 27, 2003

P/N: PM0733

BLOCK DIAGRAM

CONTROL

LOGIC

OUTPUT

BUFFERS

Q0~Q17

PGM

A0~A16

ADDRESS

INPUTS

Y-DECODER

X-DECODER

Y-SELECT

1M BIT

CELL

MAXTRIX

VCC

GND

VPP

FUNCTIONAL DESCRIPTION

THE PROGRAMMING OF THE MX27C1000A

When the MX27C1000A is delivered, or it is erased,
the chip has all 1M bits in the "ONE" or HIGH state.
"ZEROs" are loaded into the MX27C1000 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 01.uF 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 PGM = VIL(or OE = 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 MX27C1000As 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 MX27C1000A may be common.
A TTL low-level program pulse applied to an
MX27C1000A CE input with VPP = 12.5

0.5 V and

PGM LOW will program that MX27C1000A. A high-level
CE input inhibits the other MX27C1000As 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 MX27C1000A.

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 MX27C1000A, 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
(DQ7) defined as the parity bit.

READ MODE

The MX27C1000A 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

MX27C1000A

REV. 1.3, AUG. 27, 2003

P/N: PM0733

(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 tQE after the falling edge
of OE, assuming that CE has been LOW and addresses
have been stable for at least tACC - tQE.

STANDBY MODE

The MX27C1000A 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 MX27C1000A 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 - A16 = 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(27C1000)(3)

VIL

VIH

VCC

CAH

MX27C1000A

REV. 1.3, AUG. 27, 2003

P/N: PM0733

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

-0.2

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 = 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 sub-
ject to change.

DC CHARACTERISTICS

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

MIN.

MAX.

UNIT

CONDITIONS

CIN

Input Capacitance

VIN = 0V

COUT

Output Capacitance

VOUT = 0V

Vpp

VPP Capacitance

VPP = 0V

MX27C1000A

-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

MX27C1000A

REV. 1.3, AUG. 27, 2003

P/N: PM0733

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 CHARACTERISTICS

27C1000A-90 27C1000A-10 27C1000A-12 27C1000A-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

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

MX27C1000A

REV. 1.3, AUG. 27, 2003

P/N: PM0733

PLASTIC PACKAGE

PART NO.

ACCESS TIME(ns)

OPERATING

STANDBY

OPERATING

PACKAGE

Current MAX.(mA)

Current MAX.(uA)

TEMPERATURE

MX27C1000APC-90

100

C to 70

32 Pin DIP

MX27C1000AQC-90

100

C to 70

32 Pin PLCC

MX27C1000AMC-90

100

C to 70

32 Pin SOP

MX27C1000ATC-90

100

C to 70

32 Pin TSOP

MX27C1000APC-10

100

C to 70

32 Pin DIP

MX27C1000AQC-10

100

C to 70

32 Pin PLCC

MX27C1000AMC-10

100

C to 70

32 Pin SOP

MX27C1000ATC-10

100

C to 70

32 Pin TSOP

MX27C1000APC-12

120

100

C to 70

32 Pin DIP

MX27C1000AQC-12

120

100

C to 70

32 Pin PLCC

MX27C1000AMC-12

120

100

C to 70

32 Pin SOP

MX27C1000ATC-12

120

100

C to 70

32 Pin TSOP

MX27C1000APC-15

150

100

C to 70

32 Pin DIP

MX27C1000AQC-15

150

100

C to 70

32 Pin PLCC

MX27C1000AMC-15

150

100

C to 70

32 Pin SOP

MX27C1000ATC-15

150

100

C to 70

32 Pin TSOP

MX27C1000API-90

100

-40

C to 85

32 Pin DIP

MX27C1000AQI-90

100

-40

C to 85

32 Pin PLCC

MX27C1000AMI-90

100

-40

C to 85

32 Pin SOP

MX27C1000ATI-90

100

-40

C to 85

32 Pin TSOP

MX27C1000API-10

100

-40

C to 85

32 Pin DIP

MX27C1000AQI-10

100

-40

C to 85

32 Pin PLCC

MX27C1000AMI-10

100

-40

C to 85

32 Pin SOP

MX27C1000ATI-10

100

-40

C to 85

32 Pin TSOP

MX27C1000API-12

120

100

-40

C to 85

32 Pin DIP

MX27C1000AQI-12

120

100

-40

C to 85

32 Pin PLCC

MX27C1000AMI-12

120

100

-40

C to 85

32 Pin SOP

MX27C1000ATI-12

120

100

-40

C to 85

32 Pin TSOP

MX27C1000API-15

150

100

-40

C to 85

32 Pin DIP

MX27C1000AQI-15

150

100

-40

C to 85

32 Pin PLCC

MX27C1000AMI-15

150

100

-40

C to 85

32 Pin SOP

MX27C1000ATI-15

150

100

-40

C to 85

32 Pin TSOP

ORDERING INFORMATION

MX27C1000A

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

TAIPEI OFFICE:

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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