ATMEL AT93C66W-10SC, AT93C66W-10SC-2.5, AT93C46R-10SI-2.7, AT93C56W-10SC-2.7, AT93C66-10PI-2.7 Datasheet

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Features

Low Voltage and Standard Voltage Operation

5.0 (V CC = 4.5V to 5.5V)

2.7 (V CC = 2.7V to 5.5V)

2.5 (V CC = 2.5V to 5.5V)

1.8 (V CC = 1.8V to 5.5V)

User Selectable Internal Organization

1K: 128 x 8 or 64 x 16

2K: 256 x 8 or 128 x 16

4K: 512 x 8 or 256 x 16

3-Wire Serial Interface

2 MHz Clock Rate (5V) Compatibility

Self-Timed Write Cycle (10 ms max)

High Reliability

Endurance: 1 Million Write Cycles

Data Retention: 100 Years

ESD Protection: >4000V

Automotive Grade and Extended Temperature Devices Available

8-Pin PDIP, 8-Pin JEDEC and EIAJ SOIC, and 8-Pin TSSOP Packages

Description

The AT93C46/56/57/66 provides 1024/2048/4096 bits of serial electrically erasable programmable read only memory (EEPROM) organized as 64/128/256 words of 16 bits each, when the ORG Pin is connected to VCC and 128/256/512 words of 8 bits each when it is tied to ground. The device is optimized for use in many industrial and commercial applications where low power and low voltage operations are essential. The AT93C46/56/57/66 is available in space saving 8-pin PDIP and 8-pin JEDEC and EIAJ SOIC packages.

Pin Configurations

Pin Name

Function

 

 

CS

Chip Select

 

 

SK

Serial Data Clock

 

 

DI

Serial Data Input

 

 

DO

Serial Data Output

 

 

GND

Ground

 

 

VCC

Power Supply

ORG

Internal Organization

 

 

DC

Don’t Connect

 

 

8-Pin SOIC

Rotated (R)

(1K JEDEC Only)

(continued)

 

 

8-Pin PDIP

 

 

 

 

 

 

 

CS

 

1

8

 

VCC

 

 

SK

 

2

7

 

DC

 

 

DI

 

3

6

 

ORG

 

 

DO

 

4

5

 

GND

 

 

 

 

 

 

 

 

 

 

 

8-Pin SOIC

 

 

 

 

 

 

 

 

CS

 

1

8

 

VCC

 

 

SK

 

2

7

 

DC

 

 

DI

 

3

6

 

ORG

 

 

DO

 

4

5

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8-Pin TSSOP

 

DC

 

1

8

 

ORG

CS

1

 

 

 

8

VCC

 

 

VCC

 

2

7

 

GND

CS

 

3

6

 

DO

SK

2

7

DC

SK

 

4

5

 

DI

DI

3

6

ORG

 

 

 

 

 

 

DO

4

5

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3-Wire Serial

EEPROMs

1K

(128 x 8 or 64 x 16)

2K

(256 x 8 or 128 x 16)

4K

(512 x 8 or 256 x 16)

AT93C46

AT93C56

AT93C57

AT93C66

 

Rev. 0172K–07/98

 

1

ATMEL AT93C66W-10SC, AT93C66W-10SC-2.5, AT93C46R-10SI-2.7, AT93C56W-10SC-2.7, AT93C66-10PI-2.7 Datasheet

The AT93C46/56/57/66 is enabled through the Chip Select pin (CS), and accessed via a 3-wire serial interface consisting of Data Input (DI), Data Output (DO), and Shift Clock (SK). Upon receiving a READ instruction at DI, the address is decoded and the data is clocked out serially on the data output pin DO. The WRITE cycle is completely self-timed and no separate ERASE cycle is required before WRITE. The WRITE cycle is only enabled when the part is in the

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

ERASE/WRITE ENABLE state. When CS is brought “high” following the initiation of a WRITE cycle, the DO pin outputs the READY/BUSY status of the part.

The AT93C46 is available in 4.5V to 5.5V, 2.7V to 5.5V, 2 . 5 V t o 5 . 5 V , a n d 1 . 8 V t o 5 . 5 V v e r s i o n s . T h e AT93C56/57/66 is available in 4.5V to 5.5V, 2.7V to 5.5V, and 2.5V to 5.5V versions.

*NOTICE: Stresses beyond 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 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. When the ORG pin is connected to VCC, the x 16 organization is selected. When it is connected to ground, the x 8 organization is selected. If the ORG pin is left unconnected, then an internal pullup device (of approximately 1 MΩ) will select the x 16 organization. This feature is not available on 1.8V devices.

2 AT93C46/56/57/66

AT93C46/56/57/66

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

 

 

 

 

 

 

COUT

 

Output Capacitance (DO)

5

pF

VOUT = 0V

CIN

 

Input Capacitance (CS, SK, DI)

5

pF

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

Symbol

Parameter

Test Condition

 

Min

Typ

Max

Unit

 

 

 

 

 

 

 

 

VCC1

Supply Voltage

 

 

1.8

 

5.5

V

VCC2

Supply Voltage

 

 

2.5

 

5.5

V

VCC3

Supply Voltage

 

 

2.7

 

5.5

V

VCC4

Supply Voltage

 

 

4.5

 

5.5

V

ICC

Supply Current

VCC = 5.0V

READ at 1.0 MHz

 

0.5

2.0

mA

 

 

 

WRITE at 1.0 MHz

 

0.5

2.0

mA

 

 

 

 

 

 

 

 

ISB1

Standby Current

VCC = 1.8V

CS = 0V

 

0

0.1

μA

ISB2

Standby Current

VCC = 2.5V

CS = 0V

 

6.0

10.0

μA

ISB3

Standby Current

VCC = 2.7V

CS = 0V

 

6.0

10.0

μA

ISB4

Standby Current

VCC = 5.0V

CS = 0V

 

17

30

μA

IIL

Input Leakage

VIN = 0V to VCC

 

 

0.1

1.0

μA

IOL

Output Leakage

VIN = 0V to VCC

 

 

0.1

1.0

μA

(1)

Input Low Voltage

4.5V VCC 5.5V

 

-0.6

 

0.8

V

VIL1

 

 

(1)

Input High Voltage

 

 

2.0

 

VCC + 1

 

VIH1

 

 

 

 

(1)

Input Low Voltage

1.8V VCC 2.7V

 

-0.6

 

VCC x 0.3

V

VIL2

 

 

(1)

Input High Voltage

 

 

VCC x 0.7

 

VCC + 1

 

VIH2

 

 

 

 

VOL1

Output Low Voltage

4.5V VCC 5.5V

IOL = 2.1 mA

 

 

0.4

V

VOH1

Output High Voltage

 

 

 

 

 

 

 

IOH = -0.4 mA

2.4

 

 

V

 

 

 

 

 

VOL2

Output Low Voltage

1.8V VCC 2.7V

IOL = 0.15 mA

 

 

0.2

V

VOH2

Output High Voltage

 

 

 

 

 

 

 

IOH = -100 μA

VCC - 0.2

 

 

V

 

 

 

 

 

Note: 1.

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

 

 

 

 

3

AC Characteristics

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

Symbol

 

Parameter

Test Condition

 

 

 

Min

Typ

Max

Units

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4.5V VCC 5.5V

 

 

 

0

 

2

 

fSK

 

SK Clock Frequency

2.7V VCC 5.5V

 

 

 

0

 

1

MHz

 

2.5V VCC 5.5V

 

 

 

0

 

0.5

 

 

 

1.8V VCC 5.5V

 

 

 

0

 

0.25

 

 

 

 

4.5V VCC

5.5V

 

 

 

250

 

 

 

tSKH

 

SK High Time

2.7V VCC

5.5V

 

 

 

250

 

 

ns

 

2.5V VCC 5.5V

 

 

 

500

 

 

 

 

 

1.8V VCC 5.5V

 

 

 

1000

 

 

 

 

 

 

4.5V VCC 5.5V

 

 

 

250

 

 

 

tSKL

 

SK Low Time

2.7V VCC 5.5V

 

 

 

250

 

 

ns

 

2.5V VCC

5.5V

 

 

 

500

 

 

 

 

 

1.8V VCC

5.5V

 

 

 

1000

 

 

 

 

 

 

4.5V VCC 5.5V

 

 

 

250

 

 

 

tCS

 

Minimum CS

2.7V VCC 5.5V

 

 

 

250

 

 

ns

 

Low Time

2.5V VCC 5.5V

 

 

 

500

 

 

 

 

 

1.8V VCC 5.5V

 

 

 

1000

 

 

 

 

 

 

 

 

4.5V

VCC

5.5V

50

 

 

 

tCSS

 

CS Setup Time

Relative to SK

2.7V

VCC

5.5V

50

 

 

ns

 

2.5V

VCC

5.5V

100

 

 

 

 

 

 

 

1.8V

VCC 5.5V

200

 

 

 

 

 

 

 

 

4.5V

VCC 5.5V

100

 

 

 

tDIS

 

DI Setup Time

Relative to SK

2.7V

VCC 5.5V

100

 

 

ns

 

2.5V

VCC

5.5V

200

 

 

 

 

 

 

 

1.8V

VCC

5.5V

400

 

 

 

tCSH

 

CS Hold Time

Relative to SK

 

 

 

0

 

 

ns

 

 

 

 

 

4.5V

VCC

5.5V

100

 

 

 

tDIH

 

DI Hold Time

Relative to SK

2.7V

VCC

5.5V

100

 

 

ns

 

2.5V

VCC

5.5V

200

 

 

 

 

 

 

 

1.8V

VCC 5.5V

400

 

 

 

 

 

 

 

 

4.5V

VCC 5.5V

 

 

250

 

tPD1

 

Output Delay to ‘1’

AC Test

 

2.7V

VCC 5.5V

 

 

250

ns

 

 

2.5V

VCC

5.5V

 

 

500

 

 

 

 

 

1.8V

VCC

5.5V

 

 

1000

 

 

 

 

 

 

4.5V

VCC 5.5V

 

 

250

 

tPD0

 

Output Delay to ‘0’

AC Test

 

2.7V

VCC 5.5V

 

 

250

ns

 

 

2.5V

VCC

5.5V

 

 

500

 

 

 

 

 

1.8V

VCC 5.5V

 

 

1000

 

 

 

 

 

 

4.5V

VCC

5.5V

 

 

250

 

tSV

 

CS to Status Valid

AC Test

 

2.7V

VCC

5.5V

 

 

250

ns

 

 

2.5V

VCC

5.5V

 

 

500

 

 

 

 

 

1.8V

VCC 5.5V

 

 

1000

 

 

 

 

 

 

4.5V

VCC 5.5V

 

 

100

 

tDF

 

CS to DO in High

AC Test

 

2.7V VCC 5.5V

 

 

100

ns

 

Impedance

CS = VIL

 

2.5V VCC

5.5V

 

 

200

 

 

 

 

 

1.8V VCC 5.5V

 

 

400

 

tWP

 

Write Cycle Time

 

 

 

 

 

0.1

 

10

ms

 

 

 

 

 

 

 

 

 

 

 

 

 

4.5V

VCC

5.5V

 

1

 

ms

 

 

 

 

 

 

 

 

 

 

 

Endurance(1)

5.0V, 25°C, Page Mode

 

 

 

 

 

1M

 

 

Write Cycles

Note:

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

 

 

 

 

 

4 AT93C46/56/57/66

AT93C46/56/57/66

Instruction Set for the AT93C46

 

 

Op

Address

 

Data

 

 

 

 

 

 

 

 

 

Instruction

SB

Code

x 8

x 16

x 8

 

x 16

Comments

 

 

 

 

 

 

 

 

 

READ

1

10

A6 - A0

A5 - A0

 

 

 

Reads data stored in memory, at

 

 

 

 

 

 

 

 

specified address.

 

 

 

 

 

 

 

 

 

EWEN

1

00

11XXXXX

11XXXX

 

 

 

Write enable must precede all

 

 

 

 

 

 

 

 

programming modes.

 

 

 

 

 

 

 

 

 

ERASE

1

11

A6 - A0

A5 - A0

 

 

 

Erase memory location An - A0.

 

 

 

 

 

 

 

 

 

WRITE

1

01

A6 - A0

A5 - A0

D7 - D0

 

D15 - D0

Writes memory location An - A0.

 

 

 

 

 

 

 

 

 

ERAL

1

00

10XXXXX

10XXXX

 

 

 

Erases all memory locations. Valid

 

 

 

 

 

 

 

 

only at VCC = 4.5V to 5.5V.

WRAL

1

00

01XXXXX

01XXXX

D7 - D0

 

D15 - D0

Writes all memory locations. Valid

 

 

 

 

 

 

 

 

only at VCC = 4.5V to 5.5V.

EWDS

1

00

00XXXXX

00XXXX

 

 

 

Disables all programming instructions.

 

 

 

 

 

 

 

 

 

Instruction Set for the AT93C57

 

 

Op

Address

 

Data

 

 

 

 

 

 

 

 

 

Instruction

SB

Code

x 8

x 16

x 8

 

x 16

Comments

 

 

 

 

 

 

 

 

 

READ

1

10

A7 - A0

A6 - A0

 

 

 

Reads data stored in memory, at

 

 

 

 

 

 

 

 

specified address.

 

 

 

 

 

 

 

 

 

EWEN

1

00

11XXXXXX

11XXXXX

 

 

 

Write enable must precede all

 

 

 

 

 

 

 

 

programming modes.

 

 

 

 

 

 

 

 

 

ERASE

1

11

A7 - A0

A6 - A0

 

 

 

Erase memory location An - A0.

 

 

 

 

 

 

 

 

 

WRITE

1

01

A7 - A0

A6 - A0

D7 - D0

 

D15 - D0

Writes memory location An - A0.

 

 

 

 

 

 

 

 

 

ERAL

1

00

10XXXXXX

10XXXXX

 

 

 

Erases all memory locations. Valid

 

 

 

 

 

 

 

 

only at VCC = 4.5V to 5.5V.

WRAL

1

00

01XXXXXX

01XXXXX

D7 - D0

 

D15 - D0

Writes all memory locations. Valid

 

 

 

 

 

 

 

 

only at VCC = 4.5V to 5.5V.

EWDS

1

00

00XXXXXX

00XXXXX

 

 

 

Disables all programming instructions.

 

 

 

 

 

 

 

 

 

5

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