ATMEL AT27C512R-90TI, AT27C512R-90TC, AT27C512R-90RI, AT27C512R-90RC, AT27C512R-90PI Datasheet

AT27C512R

512K (64K x 8)
OTP
CMOS
EPROM

Features

0015H

Fast Read Access Ti me - 45 ns

•

Low Power CMOS Operation

•

100 µA max. Standby
20 mA max. Active at 5 MHz

JEDEC Standard Packages

•

28-Lead 600-mil PDIP
32-Lead PLCC
28-Lead TSOP and SOIC

5V ± 10% Supply

•

High Reliabili ty C MOS Te ch nology

•

2,000V ESD Protection
200 mA Latchup Imm un ity

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

•

CMOS and TTL Compatible Inputs and Outputs

•

Integrated Produc t Ide nti fication Code

•

Commercial and Industrial Temperature Ranges

•

Description

The AT27C512R is a low-power, high performance 524,288 bit one-time program­mable read only memory (OTP EPROM) organized 64K by 8 bits. It requires only
one 5V power supply in normal read mode operation. Any byte can be accessed in
less than 45 ns, eliminating the need for speed reducing WAIT states on high per­formance microprocessor systems.

Atmel’s scaled CMOS technology provides high speed, lower active power con­sumption, and significantly faster programming. Power consumption is ty pically only
8 mA in Active Mode and less than 10 µA in Standby.

(continued)

AT27C512R

Pin Configurations

Pin Name Function

A0 - A15 Addresses
O0 - O7 Outputs
CE Chip Enable
OE /V
NC No Connect

Output Enable/V

PP

PLCC Top View

Note: PLCC Package Pins 1 and
17 are DON’T CONNECT.

PDIP, SOIC Top View

PP

TSOP Top View

Type 1

3-135

Description (Continued)

The AT27C512R is available in a choice of industry stand­ard JEDEC-approved one-time programmable (OTP)
plastic PDIP, PLCC, SOIC, and TSOP packages. All de­vices feature two-line control (
the flexibility to prevent bus contention.

With 64K byte storage capability, the AT27C512R allows
firmware to be stored reliably and to be accessed by the
system without the delays of mass storage media.

Atmel’s 27C512R has additional features to ensure high
quality and efficient production use. The Rapid
ming Algorithm reduces the time required to program the
part and guarantees reliable programming. Programming
time is typically only 100 µs/byte. The Integrated Product
Identification Code electronically identifies the device and
manufacturer. This feature is used by industry standard
programming equipment to select the proper program­ming algorithms and voltages.

CE, OE) to give designers



Program-

System Considerations

Switching between active and standby conditions via the
Chip Enable pin may produce transient voltage excur­sions. 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 fre­quency, low inherent inductance, ceramic capacitor
should be utilized for each device. This capacitor should
be connected between the V
the device, as 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

and Ground terminals. This capacitor should be posi-

V

CC

tioned as close as possible to the point where the power
supply is connected to the array.

and Ground terminals of

CC

3-136 AT27C512R

AT27C512R

Block Diagram

Absolute Maximum Ra ti ngs *

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

Voltage on A9 with

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

VPP Supply Voltage with

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

*NOTICE: Stresses beyond those listed unde r “Absolu te Maxi-

mum Ratings” may cause permanent da ma ge to th e de vice .
This is a stress rating only and functional operation of the
device at these or any other conditions beyond those indi­cated in the operational sections of this specification is not
implied. Exposure to absolute maximum rating conditions
for extended periods may affect device reliability.

Note: 1. Minimum 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.

+ 0.75V dc wh ich may over-

CC

(1)

(1)

(1)

Operating Modes

Mode \ Pin

Read V
Output Disable V
Standby V
Rapid Program
PGM Inhibit V

Product Identification

Notes: 1. X can be VIL or VIH.

2. Refer to Programming Characteristics.

3. VH = 12.0 ± 0.5V.

(2)

(4)

CE OE/V

X

V
V

V
V

PP
PP

V

IL
IL
IH

V

IL
IH

V

IL

PP

IL

IH
(1)

Ai
Ai D

(1)

X

X High Z

Ai D

(1)

X

A9 = VH

IL

A0 = VIH or VIL

A1 - A15 = V

4. Two identifier by tes may be selec ted. All Ai in pu ts are held
low (V
gled low (V
and high (V

), except A9 which is set to VH and A0 which is tog-

IL

) to select the Manuf ac tu rer’s Identifi ca ti on byte

IL

) to select the Dev ice Code byte.

IH

(3)

IL

Outputs

OUT

High Z

IN

High Z

Identification Code

3-137

DC and AC Operating Conditions f or Read Operation

AT27C512R

-90 -12

-15

Operating

-45 -55 -70

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

Temp.(Case)

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

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

V

CC

DC and Operating Characte ristics for Read Operation

Symbol Parameter Condition Min Max Units

I

LI

I

LO

I

SB

I

CC

V

IL

V

IH

V

OL

V

OH

Note: 1. V

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

(1)

VCC

Standby Current

VCC Active Current

= 0V to V

OUT

I

(CMOS), CE = V

SB1

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

I

SB2

f = 5 MHz, I
CE = V

IL

CC

OUT

CC

CC

= 0 mA,

± 0.3V

±1 µA
±5 µA

100 µA

20 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 IOH = -400 µA 2.4 V

must be applied simultaneou sl y or before OE/VPP, and removed simultaneously or after OE/VPP.

CC

1mA

AC Characteristics for Read Operation

-45 -55 -70 -90 -12

Symbol Parameter Condition

ACC

t

CE

t

OE

t

DF

t

OH

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

Output Delay

(2)

CE to Output Delay OE/VPP = V
OE/VPP to Output

(2, 3)

Delay
OE/V

(4, 5)

Output Float, whichever occurred firs t
Output Hold from

Address, CE or OE/VPP,
whichever occurred first

or CE High to

PP

Address to

(3)

t

CE = OE/V
= V

CE = V

IL

IL

PP

IL

3-138 AT27C512R

Min Max Min Max Min Max Min Max Min Max Min Max

45 55 70 90 120 150 ns
45 55 70 90 120 150 ns
20 25 30 35 35 40 ns

20 20 25 25 30 35 ns

777000 ns

AT27C512R

-15
Units

Output Test Load

AT27C512R

AC Waveforms for Re ad O peration

(1)

Notes: 1. Timing measurement reference level is 1.5V for -45 and

-55 devices. Input AC drive levels are V
= 3.0V. Timing meas ure me nt reference level s fo r

V

IH

all other speed grades are V

2.0V. Input AC drive levels are V

2.4V.

2. OE/VPP may be delayed up to t
edge of

CE without impact on t

= 0.8V and VOH =

OL

IL

CE
CE

= 0.0V and

IL

= 0.45V and VIH =

- tOE after the falling
.

3. OE/VPP may be delayed up to t
address is valid without impact on t

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.

- tOE after the

ACC

.

ACC

Input Test Waveforms and Measurement Levels

For -45 and -55 devices
only:

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

For -70, -90, -12, -15,
and -20 devices:

Note: CL = 100 pF including jig capaci-

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

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

(1)

Pin Capacitance (f = 1 MHz T = 25°C)

Typ Max Units Conditions

C

IN

C

OUT

Note: 1. Typical values for nominal supply voltage. This parame te r is on ly sampl ed and is not 10 0% t ested.

46pFV
812pFV

= 0V

IN
OUT

= 0V

3-139

Programming Wavef or ms

Notes: 1. The Input Timing Re fe rence is 0.8V for VIL and 2.0V for VIH.

2. t

OE

and t

are characteristics of the devic e but mu st be acco mmod at ed by the pro gra mmer.

DFP

DC Programming Characteristics

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

Symbol Parameter

I

LI

V

IL

V

IH

V

OL

V

OH

I

CC2

I

PP2

V

ID

3-140 AT27C512R

Input Load Current VIN = VIL,V
Input Low Level -0.6 0.8 V
Input High Level 2.0 V
Output Low Voltage I
Output High Volta ge IOH = -400 µA2.4 V

VCC Supply Current
(Program and Verify)

OE/VPP Current CE = V
A9 Product Identi fication Volt age 11.5 1 2. 5 V

Test
Conditions

IH

= 2.1 mA 0.4 V

OL

Min

Limits

Max

±10 µA

+ 1 V

CC

25 mA

IL

25 mA

Units

AT27C512R

AC Programming Characteristics

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

Sym­bol Parameter

Address Setup Time 2 µs

t

AS

OE/VPP Setup Time 2 µs

t

OES

OE/VPP Hold Time 2 µs

t

OEH

Data Setup Time 2 µs

t

DS

Address Hold Time 0 µs

t

AH

Data Hold Time 2 µs

t

DH

CE High to

t

DFP

Output Float Delay
VCC Setup Time 2 µs

t

VCS

CE Program Pulse Width

t

PW

Data Valid from CE

t

DV

OE/VPP Recovery Time 2 µs

t

VR

OE/VPP Pulse Rise

t

PRT

Time During Programming

*AC Conditions of Test:

Input Rise and Fa ll Times (10% to 90%). .......... .. . 20 ns

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

Test
Condtions*

(2)

(3)

(2)

Limits Units

(1)

Min Max

0130ns

95 105 µs

50 ns

1 µs

Rapid Programming Algor ithm

A 100 µs CE pulse width is used to program. The address
is set to the first location. V
OE/VPP is raised to 13.0V. Each address is first pro­grammed with one 100 µs
Then a verification/reprogram ming loop is executed for
each address. In the event a byte fails to pass verification,
up to 10 successive 100 µs pulses ar e applied with a veri­fication after each pulse. If the byte fails to verify after 10
pulses have been applied, the part is considered failed.
After the byte verifies properly, the next address is se­lected until all have been checked.
ered to V

and VCC to 5.0V. All bytes are read again and

IL

compared with the original data to determine if the device
passes or fails.

is raised to 6.5V and

CC

CE pulse without verification.

OE/VPP is then low-

Notes: 1. V

must be applied simultaneou sl y or before

CC

OE/VPP and removed simultaneously or after
OE/VPP.

2. This parameter is only sampl ed and is no t 100%
tested. Output Float is defined as the point where
data is no longer driven — see timing diagram.

3. Program Pu lse width tolerance is 100 µsec ± 5%.

Atmel’s 27C512R Int egr ated
Product Identification Code

Pins

Codes

Manufacturer0000111101E
Device Type 1000011010D

A0 O7 O6 O5 O4 O3 O2 O1 O0

Hex

Data

3-141

Ordering Information

t

ACC

(ns)

45 20 0.1 AT27C512R-45JC 32J Commercial

55 20 0.1 AT27C512R-55JC 32J Commercial

70 20 0.1 AT27C512R-70JC 32J Commercial

90 20 0.1 AT27C512R-90JC 32J Commercial

120 20 0.1 AT27C512R-12JC 32J Commercial

150 20 0.1 AT27C512R-15JC 32J Commercial

I

(mA)

CC

Active Standby

Ordering Code Package Operation Range

AT27C512R-45PC 28P6 (0°C to 70°C)
AT27C512R-45RC 28R
AT27C512R-45TC 28T

20 0.1 AT27C512R-45JI 32J Industrial

AT27C512R-45PI 28P6 (-40°C to 85°C)
AT27C512R-45RI 28R
AT27C512R-45TI 28T

AT27C512R-55PC 28P6 (0°C to 70°C)
AT27C512R-55RC 28R
AT27C512R-55TC 28T

20 0.1 AT27C512R-55JI 32J Industrial

AT27C512R-55PI 28P6 (-40°C to 85°C)
AT27C512R-55RI 28R
AT27C512R-55TI 28T

AT27C512R-70PC 28P6 (0°C to 70°C)
AT27C512R-70RC 28R
AT27C512R-70TC 28T

20 0.1 AT27C512R-70JI 32J Industrial

AT27C512R-70PI 28P6 (-40°C to 85°C)
AT27C512R-70RI 28R
AT27C512R-70TI 28T

AT27C512R-90PC 28P6 (0°C to 70°C)
AT27C512R-90RC 28R
AT27C512R-90TC 28T

20 0.1 AT27C512R-90JI 32J Industrial

AT27C512R-90PI 28P6 (-40°C to 85°C)
AT27C512R-90RI 28R
AT27C512R-90TI 28T

AT27C512R-12PC 28P6 (0°C to 70°C)
AT27C512R-12RC 28R
AT27C512R-12TC 28T

20 0.1 AT27C512R-12JI 32J Industrial

AT27C512R-12PI 28P6 (-40°C to 85°C)
AT27C512R-12RI 28R
AT27C512R-12TI 28T

AT27C512R-15PC 28P6 (0°C to 70°C)
AT27C512R-15RC 28R
AT27C512R-15TC 28T

3-142 AT27C512R

(continued)

AT27C512R

Ordering Information (Continued)

t

ACC

(ns)

150 20 0.1 AT27C512R-15JI 32J Industrial

I

(mA)

CC

Active Standby

Ordering Code Package Operation Range

AT27C512R-15PI 28P6 (-40°C to 85°C)
AT27C512R-15RI 28R
AT27C512R-15TI 28T

Package Type

32J 32 Lead, Plastic J-Leade d Chi p Carrier (PLCC)
28P6 28 Lead, 0.600" Wide, Plastic Dual Inl in e Packa ge (PDIP)
28R 28 Lead, 0.330" Wide, Plastic Gull Win g Small Outl ine (SOIC)
28T 28 Lead, Thin Small Outline Package (TSOP)

3-143