ATMEL AT27C4096-90JI, AT27C4096-90JC, AT27C4096-70VI, AT27C4096-70VC, AT27C4096-70PI Datasheet

Features

• Fast Read Access Time - 55 ns

• Low Power CMOS Operation

– 100 µA Maximum Standby
– 40 mA Maximum Active at 5 MHz

• JEDEC Standard Packages

– 40-Lead 600 mil PDIP
– 44-Lead PLCC
– 40-Lead TSOP (10 mm x 14 mm)

• Direct Upgrade from 512K bit, 1M bit, and 2M bit

(AT27C516, AT27C1024, and AT27C2048) EPROMs

• 5V ± 10% Power Supply

• High Reliability CMOS Technology

– 2,000V ESD Protection
– 200 mA Latchup Immunity

™

• Rapid

• CMOS and TTL Compatible Inputs and Outputs

• Integrated Product Identification Code

• Commercial and Industrial Temperature Ranges

Programming Algorithm - 50 µs/word (typical)

Description

The AT27C4096 is a low-power, high-performance 4,194,304-bit one-time program­mable read only memor y (OTP EP ROM) organiz ed 256K by 16 bits . It requ ires a s in­gle 5V power supply in nor mal read mode op eration. Any w ord can be acce ssed in
less than 55 ns , eliminatin g the need fo r speed-redu cing WAIT states. T he by-16
organization makes this part ideal for high-performance 16- and 32-bit microprocessor
systems.

(continued)

Pin Configurations

Pin Name Function

PDIP Top View

AT27C4096

4-Megabit
(256K x 16)
OTP EPROM

AT27C4096

A0 - A17 Addresses
O0 - O15 Outputs
CE
OE
NC No Connect

Note: Both GND pins must be

Chip Enable
Output Enable

connected.

PLCC Top View

TSOP Top View

Type 1

0311E-A–06/97

1

Description

µ

µ

µ

µ

In read mode, the AT27C4096 typically consumes 15 mA.

™

A.

Pro-

Standby mode supply current is typically less than 10
The AT27C4096 is ava ilable in industry standard

JEDEC-approved one -time programm able (OTP) plasti c
PDIP, PLCC, and TSOP pa ckages. The de vice features
two-line control (CE
high-speed systems.

With high density 256K word storage capability, the
AT27C4096 allows firmware to be store d reliabl y and to be
accessed by the system without the delays of mass storage
media.

Atmel’s AT27C4096 has additional features that ensure
high quality and efficient production use. The Rapid
gramming Algorithm reduces the time required to program
the part and guarantees reliable programming. Program­ming time is typically only 50
uct Identifi cation Co de elect ronicall y identi fies the d evice
and manufacturer. This feature is use d by industry stan­dard programming equipment to select the proper program­ming algorithms and voltages.

, OE) to eliminate bus contention in

s/word. The Integrated Prod-

System Considerations

Switching between active and standby conditions via the
Chip Enable pin may produce tr ans ie nt v olta ge e xcur sion s.
Unless accommodated by the system design, these tran­sients may exceed data sheet limits, resulting in device
non-conformance . At a minim um, a 0.1
low inherent inductance, ceramic capacitor should be uti­lized for each device. This capacitor shoul d be connected
between the V
close to the device as possible. Additionally, to stabilize the
supply voltage level on printed circuit boards with large
EPROM arrays, a 4.7
be utilized, agai n connec ted betwe en the V
terminals. This capacitor should be positioned as close as
possible to the point where the power supply is connected
to the array.

and Ground terminals of the device, as

CC

F bulk electrolytic capacitor should

F high frequency,

and Ground

CC

2

AT27C4096

Block Diagram

Absolute Maximum Ratings*

AT27C4096

Temperature Under Bias ......................-55°C to +125°C

Storage Temperature............................-65°C to +150°C

Voltage on Any Pin with

Respect to Ground ...............................-2.0V to +7.0V

(1)

Voltage on A9 with

Respect to Ground ............................-2.0V to +14.0V

(1)

VPP Supply Voltage with

Respect to Ground .............................-2.0V to +14.0V

(1)

*NOTICE: Stresses beyond those listed under “Absolute

Maximum Ratings” may cause permanent dam­age to the dev ice . This is a stress rating only an d
functional operati on of the de vi ce at these or an y
other conditions beyond those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions f or exten ded periods ma y affect d evice
reliability .

Note: Maximum voltage is -0.6V dc which may undershoot

to -2.0V for pulses of less than 20 ns. Maximum out­put pin voltage is V
shoot to +7.0V for pulses of less than 20 ns.

CC

Operating Modes

Mode/Pin CE OE Ai V

Read V

IL

Output Disable X V
Standby V
Rapid Program

(2)

PGM Verify V
PGM Inhibit V

Product Identification

Notes: 1. X can be VIL or VIH.

2. Refer to the Programming characteristics.
= 12.0 ± 0.5V.

3. V

H

4. Two identifier words ma y be selec ted. All Ai input s are held low (VIL), except A9 , which is set to VH, and A0, wh ich i s to ggl ed

low (V

5. Standby VCC current (ISB) is specified with VPP = VCC. VCC > VPP will cause a slight increase in ISB.

(4)

) to select the Manufacturer’s Identification word and high (VIH) to select the Device Code word.

IL

IH

V

IL
IH
IH

V

IL

V

IL
IH

XXX

V

IH

V

IL

V

IH

V

IL

Ai X

X X High Z

Ai V
Ai V

XV

A9 = V

(3)

H

A0 = VIH or VIL

A1 - A17 = V

IL

+ 0.75V dc which may over-

Outputs

PP

(1)

D

OUT

(5)

High Z
D

V

PP
PP
PP

CC

IN

D

OUT

High Z

Identification Code

3

DC and AC Operating Conditions for Read Operation

µ

µ

µ

µ

AT27C4096

-55 -70 -90 -12 -15

Operating Temperature
(Case)

V

Power Supply 5V ± 10% 5V ± 10% 5V ± 10% 5V ± 10% 5V ± 10%

CC

Com. 0°C - 70°C0°C - 70°C0°C - 70°C0°C - 70°C0°C - 70°C

Ind. -40°C - 85°C-40°C - 85°C-40°C - 85°C-40°C - 85°C-40°C - 85°C

DC and Operating Characteristics for Read Operation

Symbol Parameter Condition Min Max Units

I

LI

I

LO

I

PP1

I

SB

I

CC

V

IL

V

IH

V

OL

V

OH

Notes: 1. VCC must be applied simultaneously or before VPP, and removed simultaneously or after VPP.

Input Load Current VIN = 0V to V
Output Leakage Current V

(2)

(1)

V

Read/Standby Current VPP = V

PP

(1)

V

Standby Current

CC

VCC Active Current

= 0V to V

OUT

CC

(CMOS)

I

SB1

= V

CE

CC

I

(TTL)

SB2

= 2.0 to V

CE
f = 5 MHz, I

CE = V

IL

CC

± 0.3V

CC

OUT

CC

+ 0.5V

= 0 mA,

± 1
± 5

10

100

1mA

40 mA

Input Low Voltage -0.6 0.8 V
Input High Voltage 2.0 VCC + 0.5 V
Output Low Voltage IOL = 2.1 mA 0.4 V
Output High Voltage I

= -400 µA2.4V

OH

2. VPP may be connected directly to VCC, except during programming. The supply current would then be the sum of ICC and
I

.

PP

A
A
A

A

AC Characteristics for Read Operation

AT27C4096

-55 -70 -90 -12 -15

Symbol Parameter Condition Min Max Min Max Min Max Min Max Min Max Units

ACC

t

CE

t

OE

(2)

(2)(3)

Output Delay
CE to Output Delay OE = V
OE to Output Delay CE = V

Address to

(3)

t

OE or CE High to

(4)(5)

t

DF

Output Float,
whichever occurred
first

Output Hold from

(4)

t

OH

Address, CE or OE,
whichever occurred
first

Note: 2, 3, 4, 5. See the AC Waveforms for Read Operation diagram.

4

AT27C4096

CE = OE

= V

IL

55 70 90 120 150 ns

IL
IL

55 70 90 120 150 ns
20 30 35 40 50 ns

20 20 20 30 35 ns

77000ns

AT27C4096

AC Waveforms for Read Operation

Notes: 1. Timing measurement references are 0.8V and 2.0V. Input AC drive levels are 0.45V and 2.4V, unless otherwise specified.

2. OE may be delayed up to tCE - tOE after the falling edge of CE without impact on tCE.

3. OE

4. This parameter is only sampled and is not 100% tested.

5. Output float is defined as the point when data is no longer driven.

may be delayed up to t

- tOE after the address is valid without impa ct on t

ACC

(1)

ACC

.

Input Test Waveforms and Measurement Levels

For -55 devices only:

, tF < 5 ns (10% to 90%)

t

R

For -70, -90, -12 and -15 devices:

, tF < 20 ns (10% to 90%)

t

R

Pin Capacitance

(f = 1 MHz T = 25°C)

(1)

Typ Max Units Conditions

Output Test Load

Note: CL = 100 pF including jig

capacitance, except for
the -45 and -55 devices,
where CL = 30 pF.

C

IN

C

OUT

Note: 1. Typical values for nominal supply voltage. This parameter is only sampled and is not 100% tested.

410pF V
812pF V

IN

OUT

= 0V

= 0V

5

Programming Waveforms

µ

(1)

Notes: 1. The Input Timing Reference is 0.8V for VIL and 2.0V for VIH.

2. t

3. When programming the AT27C4096, a 0.1 µF capacitor is required across VPP and ground to suppress spurious voltage

and t

OE

transients.

are characteristics of the device but must be accommodated by the programmer.

DFP

DC Programming Characteristics

TA = 25 ± 5°C, VCC = 6.5 ± 0.25V, VPP = 13.0 ± 0.25V

Limits

Symbol Parameter Test Conditions Min Max Units

I

LI

V

IL

V

IH

V

OL

V

OH

I

CC2

Input Load Current VIN = VIL, V

IH

Input Low Level -0.6 0.8 V
Input High Level 2.0 V
Output Low Voltage IOL = 2.1 mA 0.4 V
Output High Voltage IOH = -400 µA2.4 V
VCC Supply Curr ent

(Program and Verify)

±

10

+

0.7

CC

50 mA

A

V

I

PP2

V

ID

6

VPP Supply Current CE = V

IL

30 mA

A9 Product Identification Voltage 11.5 12.5 V

AT27C4096

AC Programming Characteristics

µ

µ

µ

µ

µ

µ

µ

µ

µ

TA = 25 ± 5°C, VCC = 6.5 ± 0.25V, VPP = 13.0 ± 0.25V

Symbol Parameter Test Conditions

(1)

AT27C4096

Limits

UnitsMin Max

t

AS

t

OES

t

DS

t

AH

t

DH

t

DFP

t

VPS

t

VCS

t

PW

t

OE

t

PRT

Notes: 1. V

2. This parameter is only sampled and is not 100% tested. Output Float is defined as the point where data is no longer driven

3. Program Pulse width tolerance is 50

Address Se tup Time

2
OE Setup Time 2
Data Setup Time 2

Input Rise and Fall Times

(10% to 90%) 20ns

Address Hold Time 0
Data Hold Time 2
OE High to Output Float Delay

(2)

VPP Setup Time 2
VCC Setup Time 2
CE Program Pulse Width

(3)

Data Valid from OE 150 ns
VPP Pulse Rise Time During

Programming

must be applied simultaneously or before VPP and removed simultaneously or after VPP.

CC

—see timing diagram.

sec ± 5%.

Input Pulse Levels

0.45V to 2.4V

Input Timing Reference Level

0.8V to 2.0V

Output Timing Reference Level

0.8V to 2.0V

0 130 ns

47.5 52.5

50 ns

s
s
s
s
s

s
s
s

Atmel’s 27C4096 Intergrated Product Identification Code

Pins
Codes
Manufacturer
Device T ype

0 0 00011110001E
1 0 1111010000F4

Hex DataA0 015-08 O7 O6 O5 O4 O3 O2 O1 O0

7

Rapid Programming Algorithm

µ

µ

A 50 µs CE pulse width is used to program. The address is
set to the first location. V
raised to 13.0V. Each address is first programmed with one

s CE pulse without verification. Then a verifica-

50
tion/reprogramming loop is exec uted for each address. In
the event a word fails to pass ver ific ation, up to 10 su cces ­sive 50

s pulses are applied with a verification after each

is raised to 6.5V and VPP is

CC

pulse. If the word fails to verify after 10 pulses have been
applied, the part is considered failed. After the word verifies
properly, the next address is selected until all have been
checked. V
words are read again and compared with the original data
to determine if the device passes or fail s.

is then lowere d to 5.0V and VCC to 5.0V. All

PP

8

AT27C4096

Order ing Information

(mA)

I

CC

t

(ns)

ACC

55 40 0.1 AT27C4096-55JC

Ordering Code Package Operation RangeActive Standby

AT27C4096-55PC
AT27C4096-55VC

44J
40P6
40V

AT27C4096

Commercial

(0°C to 70°C)

40 0.1 AT27C4096-55JI

AT27C4096-55PI
AT27C4096-55VI

70 40 0.1 AT27C4096-70JC

AT27C4096-70PC
AT27C4096-70VC

40 0.1 AT27C4096-70JI

AT27C4096-70PI
AT27C4096-70VI

90 40 0.1 AT27C4096-90JC

AT27C4096-90PC
AT27C4096-90VC

40 0.1 AT27C4096-90JI

AT27C4096-90PI
AT27C4096-90VI

120 40 0.1 AT27C4096-12JC

AT27C4096-12PC
AT27C4096-12VC

40 0.1 AT27C4096-12JI

AT27C4096-12PI
AT27C4096-12VI

44J
40P6
40V

44J
40P6
40V

44J
40P6
40V

44J
40P6
40V

44J
40P6
40V

44J
40P6
40V

44J
40P6
40V

Industrial

(-40°C to 85°C)

Commercial

(0°C to 70°C)

Industrial

(-40°C to 85°C)

Commercial

(0°C to 70°C)

Industrial

(-40°C to 85°C)

Commercial

(0°C to 70°C)

Industrial

(-40°C to 85°C)

150 40 0.1 AT27C4096-15JC

AT27C4096-15PC
AT27C4096-15VC

40 0.1 AT27C4096-15JI

AT27C4096-15PI
AT27C4096-15VI

44J
40P6
40V

44 Lead, Plastic J-Leaded Chip Carrier (PLCC)
40 Lead, 0.600" Wide, Plastic Dual Inline Package (PDIP)
40 Lead, Plastic Thin Small Outline Package (TSOP) 10 x 14 mm

Package Type

44J
40P6
40V

44J
40P6
40V

Commercial

(0°C to 70°C)

Industrial

(-40°C to 85°C)

9