Datasheet AT27BV020-90VI, AT27BV020-90VC, AT27BV020-90TI, AT27BV020-90TC, AT27BV020-90JI Datasheet (ATMEL)

Features

•

Fast Read Access Time - 90 ns

•

Dual Voltage Range Operation

– Unregulated Battery Power Supply Range, 2.7V to 3.6V

or Standard 5V ± 10% Supply Range

•

Compatible with JEDEC Standard AT27C020

•

Low Power CMOS Operation

–20 µA max. (less than 1 µA typical) Standby for VCC = 3.6V
– 29 mW max. Active at 5 MHz for VCC = 3.6V

•

Wide Selection of JEDEC Standard Packages

– 32-Lead PLCC
– 32-Lead TSOP (8 x 20mm)
– 32-Lead VSOP (8 x 14mm)
– 42-Ball CBGA (8 x 8mm)

•

High Reliability CMOS Technology

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

•

Rapid™ Programming Algorithm - 100 µs/byte (typical)

•

CMOS and TTL Compatible Inputs and Outputs

– JEDEC Standard for LVTTL and LVBO

•

Integrated Product Identification Code

•

Commercial and Industrial Temperature Ranges

AT27BV020

2-Megabit
(256K x 8)
Unregulated

Battery-Voltage™

High Speed

Description

The AT27BV020 is a high-performance, low-power, low-voltage 2,097,152-bit one­time programmable read only memory (OTP EPROM) organized as 256K by 8 bits. It
requires only one supply in the range of 2.7 to 3.6V in normal read mode operation,
making it ideal for fast, portable systems using either regulated or unregulated battery
power.

Pin Configurations

Pin Name Function

A0 - A17 Address
O0 - O7 Outputs
CE
OE
PGM

PLCC, Top View

Chip Enable
Output Enable
Program Strobe

CBGA Top View

234567

1

A

GND

O6

VCC

VCC

B

A17

O7

C

A10

D

A14

E

A16

F

A15

NC
A13
A11
A12

O4
O5
A9

PGM

A8

NC
NC
NC
NC
NC

O2
NC
O3
NC
A7

VPP

TSOP, VSOP Top View

Type 1

(continued)

OE

GND

O0

CE

O1

A0

A6

A3

A4

A1

A5

A2

OTP EPROM

AT27BV020

0902A-A–10/97

1

Atmel’s innovativ e design techniques provide fas t speeds
that rival 5V parts while keep ing th e low pow er consum p­tion of a 3V supply. At V

= 2.7V, any byte can be

CC

accessed in less than 90 ns. With a typical power dissipa­tion of only 18 mW at 5 MHz and V

= 3V, the AT27BV020

CC

consumes less than one fifth the power of a standard 5V
EPROM. Standby mode supply current is typically less than
1 µA at 3V. The AT27BV020 simplifies system design and
stretches battery li fetime even further by eliminating the
need for power supply regulation

The AT27BV020 is available in industry standard JEDEC
approved one-time programmable (OTP) plastic PLCC,
TSOP and VSOP packages, as well as a 42-ball, 1 mm
pitch, plastic chip-scale Ball Grid Array package (CBGA).
All devices feature two-line control (CE

, OE) to give design-

ers the flexibility to prevent bus contention.
The AT27BV020 op eratin g with V

at 3.0V produces TTL

CC

level outputs that are compatible with standard TTL logic
devices operat ing at V

= 5.0V. At VCC = 2.7V, the part is

CC

compatible with JEDEC approved low voltage battery oper­ation (LVBO) interface specifications . The device is also
capable of standard 5-volt operation making it ideally suited
for dual supply range systems or card products that are
pluggable in both 3-volt and 5-volt hosts.

Atmel's AT27B V020 has addi tional fe atures to e nsure high
quality and efficient production use. The Rapid

™

Program-

ming Algori thm reduc es the ti me requi red to pro gram the
part and guarantees reliable programming. Programming
time is typically only 100 µs/byte. The Inte grated Produc t
Identification Code electronically identi fies the device and
manufacturer. This feature is used by industry standard
programming equipment to select the proper programming
algorithms and voltages. The AT27BV020 programs
exactly the same way as a standard 5V AT27C020 and
uses the same programming equipment.

System Considerations

Switching between active and standby conditions via the
Chip Enable pin may prod uce tr ans ie nt v olt age excur sions.
Unless accommodated by the system design, these tran­sients may exceed data sheet limits, resulting in device
non-conformance. At a minimum, a 0.1 µF high frequ enc y,
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 µF bulk electrolytic capacitor should
be utilized, again connected between 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

and Ground

CC

2

AT27BV020

Block Diagram

Absolute Maximum Ratings*

Temperature Under Bias.................................. -40°C to +85°C

Storage Temperature..................................... -65°C to +125°C

Voltage on Any Pin with

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

Voltage on A9 with

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

VPP Supply Voltage with

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

AT27BV020

*NOTICE: Stresses beyond those listed und er “Absolute M axi-

mum Ratings” ma y cause permanent damage to th e
device. This is a stress rating only and functional
operation of the device at these or any other condi-

(1)

(1)

Note: Minimum voltage is -0.6V DC which may undershoot to -

(1)

tions beyond those indicated in the operational sec­tions of this specific ation is not implie d. Exposure to
absolute maximum rating conditions for extended
periods may affect device reliability.

2.0V for pulses of less than 20 ns.Maximum output pin
voltage is V

+ 0.75V DC which may be exceeded if cer-

CC

tain precautions are obs erved (consult application not es)
and which ma y ov ershoot to +7.0V f or pulse s of less than
20 ns.

Operating Modes

Mode / Pin CE OE PGM Ai V

(2)

Read
Output Disable
Standby
Rapid Program
PGM Verify
PGM Inhibit

Product Identification

(2)

(2)

(3)

(3)

(3)

(3)(5)

Notes: 1. X Can be VIL or VIH.

2. Read, output disable, and standby modes requir e, 2.7V ≤ V

3. Refer to Programming Characteristics. Programming modes requires VCC = 6.5V.
= 12.0 ± 0.5V.

4. V

H

5. Two identifier bytes may be selected. All Ai inputs are held low (VIL), except A9 which is set to VH and A0 which is toggl ed low

) to select the Manufacturer’s Identification byte and high (VIH) to select the Devi ce Code byte.

(V

IL

V

IL

X V

V

IH

V

IL

V

IL

V

IH

V

IL

V

IL

IH

XX X XV

V

IH

V

IL

XX X VPPV

V

IL

(1)

X

Ai X V

XXXV

V

IL

V

IH

X

Ai V
Ai V

A9 = V

A0 = VIH or V

A1 - A17 = V

≤ 3.6V, or 4.5V ≤ VCC ≤ 5.5V.

CC

(4)

H

IL

IL

PP

PP

PP

XV

V

CC

(2)

CC

(2)

CC

(2)

CC

(3)

V

CC

(3)

V

CC

(3)

CC

(3)

CC

Outputs

D

OUT

High Z
High Z
D

IN

D

OUT

High Z
Identification

Code

3

DC and AC Operating Conditions for Read Operation

AT27BV020

-90 -12 -15

Com.

0°C - 70°C 0°C - 70°C 0°C - 70°C

Operating Temperature (Case)

Ind.

-40°C - 85°C -40°C - 85°C -40°C - 85°C

2.7V to 3.6V 2.7V to 3.6V 2.7V to 3.6V

V

Power Supply

CC

5V ± 10% 5V ± 10% 5V ± 10%

= Preliminary Information

DC and Operating Characteristics for Read Operation

Symbol Parameter Condition Min Max Units
V

= 2.7V to 3.6V

CC

±

I

LI

I

LO

(2)

I

PP1

I

SB

I

CC

V

IL

V

IH

V

OL

V

OH

= 4.5V to 5.5V

V

CC

I

LI

I

LO

(2)

I

PP1

I

SB

I

CC

V

IL

V

IH

V

OL

V

OH

Notes: 1.

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

(1)

V

Read/Standby Current VPP = V

PP

(1)

V

Standby Current

CC

VCC Active Current f = 5 MHz, I

Input Low Voltage

Input High Voltage

Output Low Voltage

Output High Voltage

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

(1)

V

Read/Standby Current VPP = V

PP

(1)

VCC

Standby Current

VCC Active Current f = 5 MHz, I
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 IOH = -400 µA2.4V

VCC must be applied simultaneously with or before

2.

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

CC

= 0V to V

OUT

(CMOS), CE = V

I

SB1

I

(TTL), CE = 2.0 to VCC + 0.5V 100

SB2

= 3.0 to 3.6V -0.6 0.8 V

V

CC

V

= 2.7 to 3.6V -0.6 0.2 x V

CC

= 3.0 to 3.6V 2.0 VCC + 0.5 V

V

CC

V

= 2.7 to 3.6V 0.7 x V

CC

= 2.0 mA 0.4 V

I

OL

I

= 100 µA0.2V

OL

I

= 20 µA0.1V

OL

= -2.0 mA 2.4 V

I

OH

I

= -100 µAV

OH

I

= -20 µAV

OH

= 0V to V

OUT

(CMOS), CE = VCC ± 0.3V 100

I

SB1

I

(TTL), CE = 2.0 to VCC + 0.5V 1 mA

SB2

V

, and removed simultaneously with or after VPP.

PP

CC

CC

±

0.3V 20

CC

= 0 mA, CE = VIL, VCC = 3.6V 8 mA

OUT

CC

- 0.2 V

CC

- 0.1 V

CC

CC

CC

CC

= 0 mA, CE = V

OUT

IL

1

±

5

10

CC

VCC + 0.5 V

±

1

±

5

10

25 mA

µ

A

µ

A

µ

A

µ

A

µ

A

V

µ

A

µ

A

µ

A

µ

A

4

AT27BV020

AC Characteristics for Read Operat ion

(V

= 2.7V to 3.6V and 4.5V to 5.5V)

CC

AT27BV020

AT27BV020

-90 -12 -15

Symbol Parameter Condition

(3)

t

ACC

t

CE

t

OE

t

DF

t

OH

(2)

(2)(3)

(4)(5)

Address to Output Delay CE = OE = V
CE to Output Delay OE = V
OE to Output Delay CE = V
OE or CE High to Output Float,

whichever occurred first
Output Hold from Address, CE or OE,

whichever occurre d firs t

Note: 2,3,4,5. - see AC Waveforms for Read Operation

AC Waveforms for Read Operation

(1)

Min Max Min Max Min Max

IL

IL

IL

90 120 150 ns
90 120 150 ns
50 50 60 ns

Units

40 40 50 ns

0 00ns

= Preliminary Information

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

may be delayed up to t

- tOE after the address is valid without impact on t

ACC

ACC

.

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.

5

Input Test Waveform and Measurement LevelInput Test Waveform and Measurement Level

Note: CL = 100 pF
including jig capacitance.

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

Output Test Load

Pin Capacitance

(f = 1 MHz, T = 25°C)

(1)

Typ Max Units Conditions

C

IN

C

OUT

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

48pF V
812pF V

IN

OUT

= 0V

= 0V

6

AT27BV020

AT27BV020

Programming Waveforms

(1)

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

2. tOE and t

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

DFP

3. When programming the AT27BV020 a 0.1 µF capacitor is required across VPP and ground to suppress spurious voltage

transients.

DC Programming Characteristics

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

Symbol Parameter Test Conditions

I

LI

V

IL

V

IH

V

OL

V

OH

I

CC2

I

PP2

V

ID

Input Load Current V
Input Low Level -0.6 0.8 V
Input High Level 2.0 VCC + 0.5 V
Output Low Voltage IOL = 2.1 mA 0.4 V
Output High Voltage IOH = -400 µA2.4 V
VCC Supply Current

(Program and Verify)
VPP Supply Curr ent CE = PGM = V
A9 Product

Identification Voltage

= VIL,V

IN

IH

Limits

UnitsMin Max

10

±

A

µ

40 mA

IL

20 mA

11.5 12.5 V

7

AC Programming Characteristics

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

(1)

(3)

(2)

Symbol

t

AS

t

CES

t

OES

t

DS

t

AH

t

DH

t

DFP

t

VPS

t

VCS

t

PW

t

OE

t

PRT

Test Conditions

Address Setup Time
CE Setup Time 2
OE Setup Time 2
Data Setup Time 2
Address Hold Time 0
Data Hold Time 2
OE High to Output Float Delay
VPP Setup Time 2
VCC Setup Time 2
PGM Program Pulse Width
Data Valid from OE 150 ns
VPP Pulse Rise Time During

Programming

AC Conditions of Test

Input Rise and Fall Times

(10% to 90%) 20ns

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

Limits

UnitsParameter Min Max

2

µ
µ
µ
µ
µ
µ

0 130 ns

µ
µ

95 105

µ

50 ns

s
s
s
s
s
s

s
s
s

Notes: 1. V

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

CC

2. This parameter is only sa mp led and is not 1 00% tes t ed . O utp ut Fl oat is defined as the point whe r e da ta i s no lon ge r driven

—see timing diagram.

3. Program Pulse wi dth tolerance is 100 µsec ± 5%.

Atmel’s 27BV020 Integrated Product Identification Code

(1)

Pins
Codes
Manufacturer
Device Type

0000111101E
11000011086

Note: The AT27BV020 has the same Product Identification Code as the AT27C020. Both are programming compatible.

Hex

DataA0 O7 O6 O5 O4 O3 O2 O1 O0

8

AT27BV020

Rapid Programming Algorithm

A 100 µs PGM pulse width is used to program. The
address is set to the first location. V

is raised to 13.0V. Each address is first programmed

V

PP

with one 100 µs PGM
verification/reprogramming loop is executed for each
address. In the even t a byte fails to pass verifi cation, up to
10 successive 100 µs pulses are applied with a verification
after each pulse. If the byte fails to verify after 10 pulses

pulse without verification. Then a

is raised to 6.5V and

CC

AT27BV020

have been applied, the part is cons idered failed. After the
byte verifies properly, the next address is selected until all
have been checked. V

5.0V. All bytes are read again and compared with the o r igi ­nal data to determine if the device passes or fails.

is then lowered to 5.0V and VCC to

PP

9

Ordering Information

VCC = 3.6V

t

(ns)

ACC

90 8 0.02 AT27BV020-90CC

8 0.02 AT27BV020-90CI

120 8 0.02 AT27BV020-12CC

8 0.02 AT27BV020-12CI

150 8 0.02 AT27BV020-15CC

8 0.02 AT27BV020-15CI

I

CC

(mA)

Ordering Code Package Operation RangeActive Standby

AT27BV020-90JC
AT27BV020-90TC
AT27BV020-90VC

AT27BV020-90JI
AT27BV020-90TI
AT27BV020-90VI

AT27BV020-12JC
AT27BV020-12TC
AT27BV020-12VC

AT27BV020-12JI
AT27BV020-12TI
AT27BV020-12VI

AT27BV020-15JC
AT27BV020-15TC
AT27BV020-15VC

AT27BV020-15JI
AT27BV020-15TI
AT27BV020-15VI

42C
32J
32T
32V

42C
32J
32T
32V

42C
32J
32T
32V

42C
32J
32T
32V

42C
32J
32T
32V

42C
32J
32T
32V

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)

Package Type

42C 42-Ball, Plastic Chip-Scale Ball Grid Array (CBGA) (8 x 8mm)
32J 32-Lead, Plastic J-Leaded Chip Carrier (PLCC)
32T 32-Lead, Plastic Thin Small Outline Package (TSOP) (8 x 20mm)
32V 32-Lead, Plastic Thin Small Outline Package (VSOP) (8 x 14mm)

10

AT27BV020

= Preliminary Information