Datasheet MX27C4000AMC-10, MX27C4000AMC-12, MX27C4000AMC-15, MX27C4000AMC-90, MX27C4000AMI-10 Datasheet (MXIC)

FEATURES

PRELIMINARY

MX27C4000A

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

• 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

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 program­ming signals are TTL levels, requiring a single pulse. For
programming outside from the system, existing EPROM

PIN CONFIGURATIONS
32 PDIP/SOP

VPP

A16
A15
A12

GND

A7
A6
A5
A4
A3
A2
A1
A0
Q0
Q1
Q2

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

MX27C4000A

VCC

32

A18

31

A17

30

A14

29

A13

28

A8

27

A9

26

A11

25

OE

24

A10

23

CE

22

Q7

21

Q6

20

Q5

19

Q4

18

Q3

17

• Operating current: 40mA

• Standby current: 100uA

• Package type:

- 32 pin PDIP

- 32 pin PLCC

- 32 pin SOP

- 32 pin TSOP

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.

32 PLCC

A12

A15

A16

VPP

VCC

A18

A17

4

5

A7
A6
A5
A4

9

A3
A2
A1
A0

13

Q0

14 17 20

Q1

1

32

MX27C4000A

Q2

Q3

GND

Q4

Q5

30

A14

29

A13
A8
A9
A11

25

OE
A10
CE
Q7

21

Q6

32 TSOP

A11

A13
A14
A17
A18

VCC

VPP

A16
A15
A12

P/N: PM00694

1
2

A9

3

A8

4
5
6
7
8
9
10
11
12
13

A7

14

A6

15

A5

16

A4

MX27C4000A

PIN DESCRIPTION

32

OE

31

A10

30

CE

29

Q7

28

Q6

27

Q5

26

Q4

25

Q3

24

GND

23

Q2

22

Q1

21

Q0

20

A0

19

A1

18

A2

17

A3

SYMBOL PIN NAME

A0~A18 Address Input
Q0~Q7 Data Input/Output
CE Chip Enable Input
OE Output Enable Input
VPP Program Supply Voltage
VCC Power Supply Pin (+5V)
GND Ground Pin

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REV. 1.6, JUL. 19, 2001

MX27C4000A

BLOCK DIAGRAM

CE

OE

A0~A18

ADDRESS

INPUTS

VCC
VSS

.
.
.
.
.
.
.
.

CONTROL

LOGIC

Y -DECODER

X-DECODER

OUTPUT

BUFFERS

.

Y -SELECT

.
.
.

4M BIT

.
.
.
.

CELL

MAXTRIX

Q0~Q7

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 ± 5°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

P/N: PM00694

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REV. 1.6, JUL. 19, 2001

MX27C4000A

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 two­line 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.

MODE SELECT TABLE

PINS

MODE CE OE A0 A9 VPP OUTPUTS

Read VIL VIL X X VCC DOUT
Output Disable VIL VIH X X VCC High Z
Standby (TTL) VIH X X X VCC High Z
Standby (CMOS) VCC±0.3V X X X VCC High Z
Program VIL VIH X X VPP DIN
Program Verify VIH VIL X X VPP DOUT
Program Inhibit VIH VIH X X VPP High Z
Manufacturer Code(3) VIL VIL VIL VH VCC C2H
Device Code(3) VIL VIL VIH VH VCC C0H

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.

P/N: PM00694

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REV. 1.6, JUL. 19, 2001

FIGURE 1. FAST PROGRAMMING FLOWCHART

MX27C4000A

ST AR T

ADDRESS = FIRST LOCATION

VCC = 6.25V
VPP = 12.75V

X = 0

PROGRAM ONE 10us PULSE

INTERACTIVE
SECTION

VERIFY SECTION

INCREMENT ADDRESS

FAIL

NO

VCC = VPP = 5.25V

VERIFY ALL BYTES

INCREMENT X

X = 25?

NO

VERIFY BYTE

?

PASS

LAST ADDRESS

YES

?

PASS

DEVICE PASSED

YES

FAIL

FAIL

DEVICE FAILED

P/N: PM00694

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REV. 1.6, JUL. 19, 2001

SWITCHING TEST CIRCUITS

MX27C4000A

DEVICE
UNDER

TEST

CL = 100 pF including jig capacitance

SWITCHING TEST WAVEFORMS

AC driving levels

AC TESTING: (1) AC driving levels are 2.4V/0.4V.

CL

6.2K ohm

2.0V
TEST POINTS

0.8V

INPUT

(2) Input pulse rise and fall times are < 10ns.

1.8K ohm
+5V

DIODES = IN3064
OR EQUIVALENT

2.0V

0.8V
OUTPUT

P/N: PM00694

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REV. 1.6, JUL. 19, 2001

MX27C4000A

ABSOLUTE MAXIMUM RATINGS

RATING VALUE

Ambient Operating Temperature -40°C to 85°C
Storage Temperature -65°C to 125°C
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

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.

DC/AC OPERATING CONDITION FOR READ OPERATION

MX27C4000A

-90 -10 -12 -15

Operating Temperature Industrial -40°C to 85°C -40°C to 85°C -40°C to 85°C -40°C to 85°C
Vcc Power Supply 5V ± 10% 5V ± 10% 5V ± 10% 5V ± 10%

DC CHARACTERISTICS

SYMBOL PARAMETER MIN. MAX. UNIT CONDITIONS

VOH Output High Voltage 2.4 V IOH = -0.4mA
VOL Output Low Voltage 0.4 V IOL = 2.1mA
VIH Input High Voltage 2.0 VCC + 0.5 V
VIL Input Low Voltage -0.3 0.8 V
ILI Input Leakage Current -10 10 u A VIN = 0 to 5.5V
ILO Output Leakage Current -10 10 u A VOUT = 0 to 5.5V
ICC3 VCC Power-Down Current 100 uA CE = VCC ± 0.3V
ICC2 VCC Standby Current 1.5 mA CE = VIH
ICC1 VCC Active Current 40 m A CE = VIL, f=5MHz, Iout = 0mA
IPP VPP Supply Current Read 10 u A CE = OE = VIL, VPP = 5.5V

CAPACITANCE TA = 25

o

C, f = 1.0 MHz (Sampled only)

SYMBOL PARAMETER TYP. MAX. UNIT CONDITIONS

CIN Input Capacitance 8 15 pF VIN = 0V
COUT Output Capacitance 8 15 pF VOUT = 0V
CVPP VPP Capacitance 18 25 pF VPP = 0V

P/N: PM00694

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REV. 1.6, JUL. 19, 2001

MX27C4000A

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 90 100 120 150 ns CE=OE=VIL
tCE Chip Enable to Output Delay 90 10 0 120 150 ns OE=VIL
tOE Output Enable to Output Delay 40 45 50 65 ns CE=VIL
tDF OE High to Output Float, 0 30 0 30 0 35 0 50 ns

or CE High to Output Float

tOH Output Hold from Address,CE or 0 0 0 0 ns

OE which ever occurred first

DC PROGRAMMING CHARACTERISTICS TA = 25

o

C ± 5oC

SYMBOL PARAMETER MIN. MAX. UNIT CONDITIONS

VOH Output High Voltage 2.4 V IOH = -0.40mA
VOL Output Low Voltage 0.4 V IOL = 2.1mA
VIH Input High Voltage 2.0 VCC + 0.5 V
VIL Input Low Voltage -0.3 0.8 V
ILI Input Leakage Current -10 10 uA VIN = 0 to 5.5V
VH A9 Auto Select Voltage 11.5 12.5 V
ICC3 VCC Supply Current (Program & Verify) 50 mA
IPP2 VPP Supply Current(Program) 30 mA CE = VIL,OE = VIH
VCC1 Fast Programming Supply Voltage 6.00 6.50 V
VPP1 Fast Programming Voltage 12.5 13.0 V

AC PROGRAMMING CHARACTERISTICS TA = 25

o

C ± 5oC

SYMBOL PARAMETER MIN. MAX. UNIT CONDITIONS

tAS Address Setup Time 2.0 us
tOES OE Setup Time 2.0 us
tDS Data Setup Time 2.0 us
tAH Address Hold Time 0 us
tDH Data Hold Time 2.0 us
tDFP Output Enable to Output Float Delay 0 130 ns
tVPS VPP Setup Time 2.0 us
tPW PGM Program Pulse Width 10 50 us
tVCS VCC Setup Time 2.0 us
tOE Data valid from OE 150 ns

P/N: PM00694

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REV. 1.6, JUL. 19, 2001

WAVEFORMS

READ CYCLE

MX27C4000A

ADDRESS

INPUTS

tACC

DATA ADDRESS

CE

tCE

OE

DATA

OUT

tOE

FAST PROGRAMMING ALGORITHM WAVEFORM

PROGRAM

VIH

Addresses

VIL

tAS

VALID DATA

Hi-z

tDF

tOH

PROGRAM VERIFY

tAH

P/N: PM00694

DATA

VPP

VCC

CE

OE

VPP1

VCC

VCC1

VCC

VIH

VIL

VIH

VIL

DATA IN STABLE

tDS

tVPS

tVCS

tPW

tDH

DATA OUT VALID

tDFP

tOES

8

tOE
Max

REV. 1.6, JUL. 19, 2001

MX27C4000A

ORDERING INFORMATION

PLASTIC PACKAGE

PART NO. ACCESS TIME OPERATING STANDBY OPERATING PACKAGE

(ns) Current MAX.(mA) Current MAX.(uA) TEMPERATURE

MX27C4000APC-90 90 30 100 0°C to 70°C 32 Pin DIP
MX27C4000AQC-90 90 30 100 0°C to 70°C 32 Pin PLCC
MX27C4000AMC-90 90 30 100 0°C to 70°C 32 Pin SOP
MX27C4000ATC-90 90 30 100 0°C to 70°C 32 Pin TSOP
MX27C4000APC-10 100 30 100 0°C to 70°C 32 Pin DIP
MX27C4000AQC-10 100 30 100 0°C to 70°C 32 Pin PLCC
MX27C4000AMC-10 100 30 100 0°C to 70°C 32 Pin SOP
MX27C4000ATC-10 100 30 100 0°C to 70°C 32 Pin TSOP
MX27C4000APC-12 120 30 100 0°C to 70°C 32 Pin DIP
MX27C4000AQC-12 120 30 100 0°C to 70°C 32 Pin PLCC
MX27C4000AMC-12 120 30 100 0°C to 70°C 32 Pin SOP
MX27C4000ATC-12 120 30 100 0°C to 70°C 32 Pin TSOP
MX27C4000APC-15 150 30 100 0°C to 70°C 32 Pin DIP
MX27C4000AQC-15 150 30 100 0°C to 70°C 32 Pin PLCC
MX27C4000AMC-15 150 30 100 0°C to 70°C 32 Pin SOP
MX27C4000ATC-15 150 30 100 0°C to 70°C 32 Pin TSOP
MX27C4000API-90 90 30 100 -40°C to 85°C 32 Pin DIP
MX27C4000AQI-90 90 30 100 -40°C to 85°C 32 Pin PLCC
MX27C4000AMI-90 90 30 100 -40°C to 85°C 32 Pin SOP
MX27C4000ATI-90 90 30 100 -40°C to 85°C 32 Pin TSOP
MX27C4000API-10 100 30 100 -40°C to 85°C 32 Pin DIP
MX27C4000AQI-10 100 30 100 -40°C to 85°C 32 Pin PLCC
MX27C4000AMI-10 100 30 100 -40°C to 85°C 32 Pin SOP
MX27C4000ATI-10 100 30 100 -40°C to 85°C 32 Pin TSOP
MX27C4000API-12 120 30 100 -40°C to 85°C 32 Pin DIP
MX27C4000AQI-12 120 30 100 -40°C to 85°C 32 Pin PLCC
MX27C4000AMI-12 120 30 100 -40°C to 85°C 32 Pin SOP
MX27C4000ATI-12 120 30 100 -40°C to 85°C 32 Pin TSOP
MX27C4000API-15 150 30 100 -40°C to 85°C 32 Pin DIP
MX27C4000AQI-15 150 30 100 -40°C to 85°C 32 Pin PLCC
MX27C4000AMI-15 150 30 100 -40°C to 85°C 32 Pin SOP
MX27C4000ATI-15 150 30 100 -40°C to 85°C 32 Pin TSOP

P/N: PM00694

9

REV. 1.6, JUL. 19, 2001

PACKAGE INFORMATION

32-PIN PLASTIC DIP(600 mil)

MX27C4000A

P/N: PM00694

10

REV. 1.6, JUL. 19, 2001

32-PIN PLASTIC LEADED CHIP CARRIER (PLCC)

MX27C4000A

P/N: PM00694

11

REV. 1.6, JUL. 19, 2001

32-PIN PLASTIC SOP (450 mil)

MX27C4000A

P/N: PM00694

12

REV. 1.6, JUL. 19, 2001

32-PIN PLASTIC TSOP

MX27C4000A

P/N: PM00694

13

REV. 1.6, JUL. 19, 2001

MX27C4000A

REVISION HISTORY

Revision No. Description Page Date

1.1 Modify Fast Programming Flowchart--Program One 100us Pulse P4 JUL/06/2000

-->10us Pulse
Modify AC Programming Characteristics--tPW 95-->10(MIN.) P7

1.2 Cencel 150ns speed P1,5,6,7,10 JUL/13/2000
Add "Advance Information" P1

1.3 Add tPW(MAX.):50us P7 SEP/01/2000

1.4 Modify Absolute Naximum Ratings--Ambient Operation P6 SEP/08/2000
Temperature 0°C to 70°C --> -40°C to 85°C
Add Package type: 32PLCC P1,9
Add Order Information--> -40°C to 85°C Operating Temperature P9
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 P3

1.6 To modify Package Information P10~13 JUL/19/2001

P/N: PM00694

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REV. 1.6, JUL. 19, 2001

MX27C4000A

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