ATMEL AT25640T2-10TI, AT25640T2-10TC-2.7, AT25640T2-10TC-1.8, AT25640T2-10TC, AT25640T1-10TI-2.7 Datasheet

Features

•

Serial Peripheral Interface (SPI) Compatible

•

Supports SPI Modes 0 (0,0) and 3 (1,1)

•

Low Voltage and Standard Voltage Operation

– 5.0 (VCC = 4.5V to 5.5V) – 2.7 (VCC = 2.7V to 5.5V) – 1.8 (VCC = 1.8V to 3.6V)

•

2.1 MHz Clock Rate

•

32-Byte Page Mode

•

Block Write Protection

– Protect 1/4, 1/2, or Entire Array

•

Write Protect (WP) Pin and Write Disable Instructions for Both Hardware and Software Data Protection

•

Self-Timed Write Cycle (5 ms Typical)

•

High Reliability

– Endurance: 1 Million Write Cycles – Data Retention: 100 Years – ESD Protection: >4000V

•

Automotive Grade and Extended Temperature Devices Available

•

8-Pin PDIP, JEDEC SOIC, and 14-Pin and 20-Pin TSSOP Packages

SPI Serial EEPROMs

8K (1024 x 8) 16K (2048 x 8) 32K (4096 x 8)

Description

The AT25080/160/320/640 provides 8192/16384/32768/65536 bits of serial electrically erasable programmable read only memory (EEPROM) organized as 1024/2048/4096/8192 words of 8 bits each. The device is optimized for use in many industrial and commercial applications where low power and low voltage operation

(continued)

Pin Configuration

Pin Name Function

CS

Chip Select SCK Serial Data Clock SI Serial Data Input SO Serial Data Output GND Ground V

CC

WP

Power Supply

Write Protect HOLD Suspends Serial Input NC No Connect DC Don’t Connect

8-Pin PDIP

1

CS

2

SO

3

WP

4

GND

14-Lead TSSOP

CS

1

SO

2

NC

3

NC

4

NC

5

WP

6

GND

7

VCC

8

HOLD

7

SCK

6

SI

5

14

VCC

13

HOLD

12

NC

11

NC

10

NC

9

SCK

8

SI

8-Pin SOIC

1

CS

2

SO

3

WP

4

GND

20-Lead TSSOP*

1

NC

2

CS

3

SO

4

SO

5

NC

6

NC

7

WP

8

GND

9

DC

10

NC

VCC

8

HOLD

7

SCK

6

SI

5

20

NC

19

VCC

18

HOLD

17

HOLD

16

NC

15

NC

14

SCK

13

SI

12

DC

11

NC

64K (8192 x 8)

AT25080 AT25160 AT25320 AT25640

*Pins 3, 4 and 17, 18 are internally connected for 14-lead TSSOP socket compatibility.

Rev. 0675C–08/98

1

are essential. The AT25080/160/320/640 is available in space saving 8-pin PDIP, JE DEC SOIC, and 14-pin and 20-pin TSSOP packages.

The AT25080/160/320/640 is enabled through the Chip Select pin (CS sisting of Serial Data Input (SI), Serial Data Output (SO), and Serial Clock (SCK). All programmi ng cycles are c ompletely self-timed, and no separate E RASE cycle is required before WRITE.

) and accessed via a 3-wire interface con-

Absolute Maximum Ratings*

Operating Temperature.................................. -55°C to +125°C

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

Voltage on Any Pin

with Respect to Ground.....................................-1.0V to +7.0V

Maximum Operating Voltage........................................... 6.25V

DC Output Current........................................................5 .0 mA

Block Diagram

BLOCK WRITE protection is enabled by programming the status register with one of four blocks of write protection. Separate program ena ble and p rogr am di sabl e in str uc tions are provided for additional data protection. Hardware data protection is provided via the WP inadvertent write attempts to the status register. The HOLD pin may be used to suspend an y serial communi cation without resetting the serial sequence.

*NOTICE: Stresses beyond those listed under “Absolute

Maximum Ratings” may cause permanent damage to the dev ice . This is a s tress rating only an d functional oper ation of the de vi ce 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 f or e xtended periods ma y af fect de vice reliability .

pin to protect against

2

AT25080/160/320/640

Pin Capacitance

(1)

Applicable over recommended operating range from TA = 25°C, f = 1.0 MHz, VCC = +5.0V (unless otherwise noted).

Test Conditions Max Units Conditions

C

OUT

C

IN

Output Capacitance (SO) 8 pF V Input Capacitance(CS, SCK, SI, WP, HOLD)6pFV

OUT

IN

= 0V

Note: 1. This parameter is characterized and is not 100% tested.

DC Characteristics

Applicable over recommended operating range from: TAI = -40°C to +85°C, VCC = +1.8V to +5.5V, TAC = 0°C to +70°C,

= +1.8V to +5.5V (unless otherwise noted).

V

CC

Symbol Parameter Test Condition Min Typ Max Units

V

CC1

V

CC2

V

CC3

I

CC1

I

CC2

I

SB1

I

SB2

I

SB3

I

IL

I

OL

(1)

V

IL

(1)

V

IH

V

OL1

V

OH1

V

OL2

V

OH2

Note: 1. V

Supply Voltage 1.8 3.6 V Supply Voltage 2.7 5.5 V Supply Voltage 4.5 5.5 V Supply Current Supply Current Standby Current Standby Current Standby Current Input Leakage Output Leakage Input Low Voltage -0.6 Input High Voltage Output Low Voltage Output High Voltage Output Low Voltage Output High Voltage I

min and VIH max are reference only and are not tested.

IL

V

= 5.0V at 1 MHz, SO = Open

CC

V

= 5.0V at 2 MHz, SO = Open

CC

V

= 1.8V, CS = V

CC

V

= 2.7V, CS = V

CC

V

= 5.0V, CS = V

CC

V

= 0V to V

IN

V

= 0V to V

IN

4.5V ≤ V

1.8V ≤ V

CC

≤

CC

,

T

CC

5.5V

3.6V

AC

CC

= 0°C to 70°C

= 3.0 mA

I

OL

I

= -1.6 mA V

OH

= 0.15 mA

I

OL

= -100 µAV

OH

0.2 0.5

0.5 2.0

-3.0 3.0

V

CC

V

x 0.7 V

CC

- 0.8

CC

- 0.2 V

CC

3.0 mA

5.0 mA

0.1

µ µ µ µ µ

x 0.3 + 0.5

V V

0.4 V V

0.2 V

A A A A A

3

AC Characteristics

Applicable over recommended operating range from TA = -40°C to +85°C, VCC = As Specified, CL = 1 TTL Gate and 100 pF (unless otherwise noted).

Symbol Parameter Voltage Min Max Units

f

SCK

SCK Clock Frequency

4.5 - 5.5

2.7 - 5.5

1.8 - 3.6

0 0 0

2.1

0.5

MHz

t

RI

t

FI

t

WH

t

WL

t

CS

t

CSS

t

CSH

t

SU

Input Rise Time

Input Fall Time

SCK High Time

SCK Low Time

CS High Time

CS Setup Time

CS Hold Time

Data In Setup Time

4.5 - 5.5

2.7 - 5.5

1.8 - 3.6

4.5 - 5.5

2.7 - 5.5

1.8 - 3.6

4.5 - 5.5

2.7 - 5.5

1.8 - 3.6

4.5 - 5.5

2.7 - 5.5

1.8 - 3.6

4.5 - 5.5

2.7 - 5.5

1.8 - 3.6

4.5 - 5.5

2.7 - 5.5

1.8 - 3.6

4.5 - 5.5

2.7 - 5.5

1.8 - 3.6

4.5 - 5.5

2.7 - 5.5

1.8 - 3.6

200 200 800

250 250

1000

250 250

1000

250 250

1000

50 50

100

2 2 2

ns

µ

ns

s

4.5 - 5.5

t

H

Data In Hold Time

2.7 - 5.5

1.8 - 3.6

4.5 - 5.5

t

HD

Hold Setup Time

2.7 - 5.5

1.8 - 3.6

4.5 - 5.5

t

CD

Hold Hold Time

2.7 - 5.5

1.8 - 3.6

4.5 - 5.5

t

V

Output Valid

2.7 - 5.5

1.8 - 3.6

4.5 - 5.5

t

HO

Output Hold Time

2.7 - 5.5

1.8 - 3.6

4

AT25080/160/320/640

50 50

100 100

100 400

200 200 400

0 0 0

200 200 800

ns

AT25080/160/320/640

AC Characteristics (Continued)

Applicable over recommended operating range from TA = -40°C to +85°C, VCC = As Specified, CL = 1 TTL Gate and 100 pF (unless otherwise noted).

Symbol Parameter Voltage Min Max Units

4.5 - 5.5

t

LZ

t

HZ

t

DIS

t

WC

Endurance

Note: 1. This parameter is characterized and is not 100% tested.

(1)

Hold to Output Low Z

Hold to Output High Z

Output Disable Time

Write Cycle Time

5.0V, 25°C, Page Mode 1M Write Cycles

2.7 - 5.5

1.8 - 3.6

4.5 - 5.5

2.7 - 5.5

1.8 - 3.6

4.5 - 5.5

2.7 - 5.5

1.8 - 3.6

4.5 - 5.5

2.7 - 5.5

1.8 - 3.6

0 0 0

100 100 100

250 250

1000

5 10 20

ns

ms

5

ATMEL AT25640T2-10TI, AT25640T2-10TC-2.7, AT25640T2-10TC-1.8, AT25640T2-10TC, AT25640T1-10TI-2.7 Datasheet

Specifications and Main Features

Frequently Asked Questions

User Manual