ATMEL AT93C46A-10TI-2.5, AT93C46A-10TI, AT93C46A-10TC-2.7, AT93C46A-10TC-2.5, AT93C46A-10TC Datasheet

1

Features

•

Low-Voltage and Standard-Voltage Operation

– 5.0 (VCC = 4.5V to 5.5V)
– 2.7 (VCC = 2.7V to 5.5V)
– 2.5 (VCC = 2.5V to 5.5V)

•

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: > 4,000V

•

Automotive Grade and Extended Temperature Devices Available

•

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

Description

The AT93C46A provides 1024 bits of serial electrically erasable programmable read
only memory (EEPROM) organized as 64 words of 16 bits each. The devi ce is opti­mized for use in many ind ustrial and com mercial appli cations where lo w power and
low voltage operation are essential. The AT93C46A is available in space saving 8-pin
PDIP, 8-pin JEDEC, and 8-Pin TSSOP packages.

The AT93C46A is enabled through the Chip Selec t pin (CS), and ac cessed via a 3­wire 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 cycl e is completely self­timed and no separate ERASE cycle is required before WRITE. The WRITE cycle is
only enabled when the part is in the ERASE/WRITE ENABLE state. When CS is
brought “high” followin g the initiation of a WRITE cy cle, the DO pin outputs the
READY/BUSY status of the part.

3-Wire
Serial EEPROM

1K (64 x 16)

AT93C46A

Rev. 0539C–07/98

3-Wire, 1K
Serial E

2

PROM

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
NC No Connect
DC Don’t Connect

8-Pin PDIP

1
2
3
4

8
7
6
5

CS
SK

DI

DO

VCC
DC
NC
GND

8-Pin SOIC

1
2
3
4

8
7
6
5

CS
SK

DI

DO

VCC
DC
NC
GND

8-Pin TSSOP

1
2
3
4

8
7
6
5

CS
SK

DI

DO

VCC
DC
NC
GND

AT93C46A

2

The AT93C46A is available in 4.5V to 5.5V, 2.7V to 5.5V,
and 2.5V to 5.5V versions.

Block Diagram

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

Absolute Maximum Ratings*

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

*NOTICE: Stresses beyond those listed under “Absolute

Maximum Ratings” may cause permanent dam­age to the de vic e. T his is a stress r ating o nly an d
functional opera tion 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 reli abi li ty.

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

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

Output Capacitance (DO) 5 pF V

OUT

= 0V

C

IN

Input Capacitance (CS, SK, DI) 5 pF VIN = 0V

AT93C46A

3

Note: 1. VIL min and VIH max are reference only and are not tested.

DC Characteristics

Applicable over recommended operating range from: TAI = -40°C to +85°C, VCC = +2.5V to +5.5V,
T

AC

= 0°C to +70°C, VCC = +2.5V to +5.5V (unless otherwise noted).

Symbol Parameter Test Condition Min Typ Max Units

V

CC1

Supply Voltage 1.8 5.5 V

V

CC2

Supply Voltage 2.5 5.5 V

V

CC3

Supply Voltage 2.7 5.5 V

V

CC4

Supply Voltage 4.5 5.5 V

I

CC

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

I

SB1

Standby Current VCC = 2.5V CS = 0V 14.0 20.0

µ

A

I

SB2

Standby Current VCC = 2.7V CS = 0V 14.0 20.0

µ

A

I

SB3

Standby Current VCC = 5.0V CS = 0V 35.0 50.0

µ

A

I

IL

Input Leakage VIN = 0V to VCC 0.1 1.0

µ

A

I

OL

Output Leakage VIN = 0V to VCC 0.1 1.0

µ

A

V

IL1

(1)

V

IH1

(1)

Input Low Voltage
Input High Voltage

4.5V ≤ VCC ≤ 5.5V -0.6

2.0

0.8

VCC + 1

V

V

IL2

(1)

V

IH2

(1)

Input Low Voltage
Input High Voltage

1.8V ≤ VCC ≤ 2.7V -0.6
V

CC

x 0.7

V

CC

x 0.3

VCC + 1

V

V

OL1

V

OH1

Output Low Voltage
Output High Voltage

4.5V ≤ VCC ≤ 5.5V IOL = 2.1 mA 0.4 V

I

OH

= -0.4 mA 2.4 V

V

OL2

V

OH2

Output Low Voltage
Output High Voltage

1.8V ≤ VCC ≤ 2.7V IOL = 0.15 mA 0.2 V

I

OH

= -100 µAV

CC

- 0.2 V

AC Characteristics

Applicable over recommended operating range from TA = -40°C to + 85°C, VCC = +2.5V to + 5.5V,
CL = 1 TTL Gate and 100 pF (unless otherwise noted).

Symbol Parameter Test Condition Min Typ Max Units

f

SK

SK Clock Frequency

4.5V ≤ V

CC

≤ 5.5V

2.7V ≤ V

CC

≤ 5.5V

2.5V ≤ V

CC

≤ 5.5V

1.8V ≤ V

CC

≤ 5.5V

0
0
0
0

2
1

0.5

0.25

MHz

t

SKH

SK High Time

4.5V ≤ V

CC

≤ 5.5V

2.7V ≤ V

CC

≤ 5.5V

2.5V ≤ V

CC

≤ 5.5V

1.8V ≤ V

CC

≤ 5.5V

250
250
500

1000

ns

t

SKL

SK Low Time

4.5V ≤ V

CC

≤ 5.5V

2.7V ≤ V

CC

≤ 5.5V

2.5V ≤ V

CC

≤ 5.5V

1.8V ≤ V

CC

≤ 5.5V

250
250
500

1000

ns

t

CS

Minimum CS Low Time

4.5V ≤ V

CC

≤ 5.5V

2.7V ≤ V

CC

≤ 5.5V

2.5V ≤ V

CC

≤ 5.5V

1.8V ≤ V

CC

≤ 5.5V

250
250
500

1000

ns

AT93C46A

4

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

t

CSS

CS Setup Time Relative to SK

4.5V ≤ V

CC

≤ 5.5V

2.7V ≤ V

CC

≤ 5.5V

2.5V ≤ V

CC

≤ 5.5V

1.8V ≤ V

CC

≤ 5.5V

50

50
100
200

ns

t

DIS

DI Setup Time Relative to SK

4.5V ≤ V

CC

≤ 5.5V

2.7V ≤ V

CC

≤ 5.5V

2.5V ≤ V

CC

≤ 5.5V

1.8V ≤ V

CC

≤ 5.5V

100
100
200
400

ns

t

CSH

CS Hold Time Relative to SK 0 ns

t

DIH

DI Hold Time Relative to SK

4.5V ≤ V

CC

≤ 5.5V

2.7V ≤ V

CC

≤ 5.5V

2.5V ≤ V

CC

≤ 5.5V

1.8V ≤ V

CC

≤ 5.5V

100
100
200
400

ns

t

PD1

Output Delay to ‘1’ AC Test

4.5V ≤ V

CC

≤ 5.5V

2.7V ≤ V

CC

≤ 5.5V

2.5V ≤ V

CC

≤ 5.5V

1.8V ≤ V

CC

≤ 5.5V

250
250
500

1000

ns

t

PD0

Output Delay to ‘0’ AC Test

4.5V ≤ V

CC

≤ 5.5V

2.7V ≤ V

CC

≤ 5.5V

2.5V ≤ V

CC

≤ 5.5V

1.8V ≤ V

CC

≤ 5.5V

250
250
500

1000

ns

t

SV

CS to Status Valid AC Test

4.5V ≤ V

CC

≤ 5.5V

2.7V ≤ V

CC

≤ 5.5V

2.5V ≤ V

CC

≤ 5.5V

1.8V ≤ V

CC

≤ 5.5V

250
250
500

1000

ns

t

DF

CS to DO in High Impedance

AC Test
CS = V

IL

4.5V ≤ VCC ≤ 5.5V

2.7V ≤ V

CC

≤ 5.5V

2.5V ≤ V

CC

≤ 5.5V

1.8V ≤ V

CC

≤ 5.5V

100
100
200
400

ns

t

WP

Write Cycle Time

0.1 10 ms

4.5V ≤ VCC ≤ 5.5V 1 ms

Endurance

(1)

5.0V, 25°C, Page Mode 1M

Write
Cycle

Instruction Set for the AT93C46A

Instruction SB Op Code

Address

Commentsx 16

READ 1 10 A

5

- A

0

Reads data stored in memory, at specified addre ss.

EWEN 1 00 11XXXX Write enable must precede all programming modes.

ERASE 1 11 A

5

- A

0

Erase memory location An - A0.

WRITE 1 01 A

5

- A

0

Writes memory location An - A0.

ERAL 1 00 10XXXX Erases all memory locations. Valid only at VCC = 4.5V to 5.5V.

WRAL 1 00 01XXXX Writes all memory locations. Valid only at V

CC

= 4.5V to 5.5V.

EWDS 1 00 00XXXX Disables all programming instructions.

AC Characteristics (Continued)

Applicable over recommended operating range from TA = -40°C to + 85°C, VCC = +2.5V to + 5.5V,
CL = 1 TTL Gate and 100 pF (unless otherwise noted).

Symbol Parameter Test Condition Min Typ Max Units