Datasheet MX27L4000TI-25, MX27L4000PC-25, MX27L4000PI-20, MX27L4000PI-25, MX27L4000QC-20 Datasheet (MXIC)

FEATURES

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

MX27L4000

MX27L4000

4M-BIT [512K x8] LOW VOLTAGE OPERATION

CMOS EPROM

• 512K x 8 organization

• Wide voltage range, 2.7V to 3.6V

• +12.5V programming voltage

• Fast access time: 200/250ns

• Totally static operation

• Completely TTL compatible

GENERAL DESCRIPTION

The MX27L4000 is a 4M-bit, One Time Programmable
Read Only Memory. It is organized as 512K words by 8
bits per word, operates from a single +3 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 programmers

PIN CONFIGURATIONS

32 PDIP/SOP

VPP

1

A16

2

A15

3

A12

4

A7

5

A6

6

A5

7

A4

8

A3

9

A2

10

A1

11

A0

12

Q0

13

Q1

14

Q2

15

GND

16

VCC

32

A18

31

A17

30

A14

29

A13

28

A8

27

A9

26

A11

25

OE

24

A10

23

MX27L4000

CE

22

Q7

21

Q6

20

Q5

19

Q4

18

Q3

17

32 PLCC 32TSOP

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

MX27L4000

Q2

Q3Q4Q5

GND

30

29

25

21

Q6

• Operating current: 20mA @ 3.6V, 5MHz

• Standby current: 50uA

• Package type:

- 32 pin plastic DIP

- 32 pin PLCC/SOP

- 32pin TSOP

may be used. The MX27L4000 supports a intelligent fast
programming algorithm which can result in programming
time of less than two minutes.

This EPROM is packaged in industry standard 32 pin
dual-in-line packages, 32 lead PLCC, 32 lead SOP, and
32 lead TSOP(I) packages.

A14
A13
A8
A9
A11
OE
A10
CE
Q7

BLOCK DIAGRAM

CE

OE

CONTROL

LOGIC

OUTPUT

BUFFERS

Q0~Q7

PIN DESCRIPTION

SYMBOL PIN NAME

A0~A18 Address Input
Q0~Q7 Data Input/Output

.

Y-DECODER

VCC
VSS

.
.
.
.

X-DECODER

.
.
.

VPP

A0~A18

ADDRESS

INPUTS

P/N: PM00255

.

Y-SELECT

.

4M BIT

MAXTRIX

CELL

.
.
.
.
.
.

CE Chip Enable Input
OE Output Enable Input
VPP Program Supply Voltage
VCC Power Supply Pin
GND Ground Pin

1

REV. 2.5, AUG. 20, 2001

MX27L4000

FUNCTIONAL DESCRIPTION

THE PROGRAMMING OF THE MX27L4000

When the MX27L4000 is delivered, or it is erased, the
chip has all 4M bits in the "ONE" or HIGH state. "ZEROs"
are loaded into the MX27L4000 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 EPROM, 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 = 6.25 V and OE = VIH (Algorithm is shown in
Figure 1). The programming is achieved by applying a
single TTL low level 100us 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 MX27L4000s 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 MX27L4000 may be common. A
TTL low-level program pulse applied to an MX27L4000
CE input with VPP = 12.5 ± 0.5 V and CE LOW will
program that MX27L4000. A high-level CE input inhibits
the other MX27L4000s 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 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 ± 5°C ambient
temperature range that is required when programming
the MX27L4000.

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
MX27L4000, 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 MX27L4000 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) 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 MX27L4000 has a CMOS standby mode which
reduces the maximum VCC current to 50 uA. It is placed
in CMOS standby when CE is at VCC ± 0.3 V. The
MX27L4000 also has a TTL-standby mode which
reduces the maximum VCC current to 0.25 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.

P/N: PM00255

2

REV. 2.5, AUG. 20, 2001

MX27L4000

TWO-LINE OUTPUT CONTROL FUNCTION

To accommodate multiple memory connections, a two­line control function is provided to allow for:

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

1. Low memory power dissipation,

2. Assurance that output bus contention will not
occur.

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
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

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.
memory device.

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 40H

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: PM00255

3

REV. 2.5, AUG. 20, 2001

FIGURE 1. FAST PROGRAMMING FLOW CHART

MX27L4000

START

ADDRESS = FIRST LOCATION

VCC = 6.25V
VPP = 12.75V

X = 0

PROGRAM ONE 100us PULSE

INTERACTIVE
SECTION

VERIFY SECTION

INCREMENT ADDRESS

FAIL

NO

INCREMENT X

X = 25?

NO

VERIFY BYTE

?

PASS

LAST ADDRESS

YES

VCC = VPP = 5.25V

VERIFY ALL BYTES

?

PASS

DEVICE PASSED

YES

FAIL

FAIL

DEVICE FAILED

P/N: PM00255

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REV. 2.5, AUG. 20, 2001

SWITCHING TEST CIRCUITS

MX27L4000

DEVICE
UNDER

TEST

CL = 100 pF including jig capacitance

SWITCHING TEST WAVEFORMS

AC driving levels

AC TESTING: (1) AC driving levels are 3.0V/0V for both commercial grade and industrial grade.

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: PM00255

5

REV. 2.5, AUG. 20, 2001

MX27L4000

ABSOLUTE MAXIMUM RATINGS

RATING VALUE

Ambient Operating Temperature -40oC to 85oC
Storage Temperature -65oC to 125oC
Applied Input Voltage -0.5V to 7.0V

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.

Applied Output Voltage -0.5V to VCC+0.5V
VCC to Ground Potential -0.5V to 7.0V
V9 & VPP -0.5V to 13.5V

NOTICE:

Specifications contained within the following tables are sub­ject to change.

DC/AC Operating Conditions for Read Operation

MX27L4000

-20 -25

Operating Temperature Commercial 0°C to 70°C0°C to 70°C

Industrial -40°C to 85°C -40°C to 85°C

VCC Power Supply 2.7V to 3.6V 2.7V to 3.6V

DC CHARACTERISTICS

SYMBOL PARAMETER MIN. MAX. UNIT CONDITIONS

VOH Output High Voltage VCC-0.3 V IOH = -100uA, VCC = 3.0V
VOL Output Low Voltage 0.3 V IOL = 2.1mA,VCC = 3.0V
VIH Input High Voltage 2.0 VCC+0.5 V
VIL Input Low Voltage -0.3 0.6 V
ILI Input Leakage Current -10 10 uA VIN = 0 to 3.6V
ILO Output Leakage Current -10 10 uA VOUT = 0 to 3.6V
ICC3 VCC Power-Down Current 50 uA CE = VCC ± 0.3V
ICC2 VCC Standby Current 0.25 mA CE = VIH
ICC1 VCC Active Current 20 mA CE = VIL, f=5MHz, Iout = 0mA,

VCC =3.6V

IPP VPP Supply Current Read 10 uA CE = OE = VIL, VPP = VCC

CAPACITANCE TA = 25

SYMBOL PARAMETER TYP. MAX. UNIT CONDITIONS

CIN Input Capacitance 8 12 pF VIN = 0V
COUT Output Capacitance 8 12 pF VOUT = 0V
CVPP VPP Capacitance 18 25 pF VPP = 0V

o

C, f = 1.0 MHz (Sampled only)

P/N: PM00255

6

REV. 2.5, AUG. 20, 2001

MX27L4000

AC CHARACTERISTICS

27L4000-20 27L4000-25

SYMBOL PARAMETER MIN. MAX. MIN. MAX. UNIT CONDITIONS

tACC Address to Output Delay 200 250 ns CE = OE = VIL
tCE Chip Enable to Output Delay 200 250 ns OE = VIL
tOE Output Enable to Output Delay 100 120 ns CE = VIL
tDF OE High to Output Float, 0 60 0 70 ns

or CE High to Output Float

tOH Output Hold from Address, 0 0 ns

CE or 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 3.6V
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

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 95 105 us
tVCS VCC Setup Time 2.0 us
tOE Data valid from OE 150 ns

P/N: PM00255

7

REV. 2.5, AUG. 20, 2001

WAVEFORMS

READ CYCLE

MX27L4000

ADDRESS

INPUTS

tACC

CE

tCE

OE

DATA

OUT

tOE

FAST PROGRAMMING ALGORITHM WAVEFORM

PROGRAM

Addresses

VIH

VIL

tAS

DATA ADDRESS

VALID DATA

Hi-z

tDF

tOH

PROGRAM VERIFY

tAH

DATA

VPP

VCC

CE

OE

VPP1

VCC

VCC1

VCC

VIH

VIL

VIH

VIL

DATA IN STABLE

tDS

tVPS

tVCS

tPW

tDH

tOES

DATA OUT VALID

tDFP

tOE
Max

P/N: PM00255

8

REV. 2.5, AUG. 20, 2001

MX27L4000

ORDERING INFORMATION

PLASTIC PACKAGE

PART NO. ACCESS TIME(ns) OPERATING STANDBY OPERATING PACKAGE

CURRENT MAX.(mA) CURRENT MAX.(uA) TEMPERATURE

MX27L4000PC-25 250 20 50 0°C to 70°C 32 Pin DIP
MX27L4000PC-20 200 20 50 0°C to 70°C 32 Pin DIP
MX27L4000QC-25 250 20 50 0°C to 70°C 32 Pin PLCC
MX27L4000QC-20 200 20 50 0°C to 70°C 32 Pin PLCC
MX27L4000MC-25 250 20 50 0°C to 70°C 32 Pin SOP
MX27L4000MC-20 200 20 50 0°C to 70°C 32 Pin SOP
MX27L4000TC-25 250 20 50 0°C to 70°C 32 Pin TSOP
MX27L4000TC-20 200 20 50 0°C to 70°C 32 Pin TSOP
MX27L4000PI-25 250 20 50 -40°C to 85°C 32 Pin DIP
MX27L4000PI-20 200 20 50 -40°C to 85°C 32 Pin DIP
MX27L4000QI-25 250 20 50 -40°C to 85°C 32 Pin PLCC
MX27L4000QI-20 200 20 50 -40°C to 85°C 32 Pin PLCC
MX27L4000MI-25 250 20 50 -40°C to 85°C 32 Pin SOP
MX27L4000MI-20 200 20 50 -40°C to 85°C 32 Pin SOP
MX27L4000TI-25 250 20 50 -40°C to 85°C 32 Pin TSOP
MX27L4000TI-20 200 20 50 -40°C to 85°C 32 Pin TSOP

P/N: PM00255

9

REV. 2.5, AUG. 20, 2001

PACKAGE INFORMATION

32-PIN PLASTIC DIP(600 mil)

MX27L4000

P/N: PM00255

10

REV. 2.5, AUG. 20, 2001

32-PIN PLASTIC SOP (450 mil)

MX27L4000

P/N: PM00255

11

REV. 2.5, AUG. 20, 2001

32-PIN PLASTIC LEADED CHIP CARRIER (PLCC)

MX27L4000

P/N: PM00255

12

REV. 2.5, AUG. 20, 2001

32-PIN PLASTIC TSOP

MX27L4000

P/N: PM00255

13

REV. 2.5, AUG. 20, 2001

MX27L4000

REVISION HISTORY

Revision No. Description Page Date

2.0 1) AC driving levels changed from 2.4V/0.3V to 3.0V/0V. 6/05/1997

2) Change package type, from 12 x 20 mm 48TSOP(I) to
8 x 20mm 32TSOP(I)

3) Eliminate Interactive Programming Mode.

2.1 IPP1 100uA ----> 10uA 7/17/1997

2.2 Change TSOP Orientation 4/09/1998

2.3 Cancel Ceramic DIP package type P1,2,9,10 MAR/02/2000

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

2.5 Cancel "Ultraviolet Erasable" wording in General Description P1 AUG/20/2001

P/N: PM00255

14

REV. 2.5, AUG. 20, 2001

MX27L4000

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

15