ATMEL AT93C46C-10SI-2.7, AT93C46C-10SI-2.5, AT93C46C-10SI, AT93C46C-10SC-2.7, AT93C46C-10SC-2.5 Datasheet

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

•

Schmitt Trigger, Filtered Inputs for Noise Suppression

•

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 and JEDEC SOIC Packages

Description

The AT93C46C 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 industrial and commercial appl ications where lo w-power and low-voltage operation are essential. The AT93C46C is available in space saving 8-pin PDIP and 8-pin JEDEC packages.

The AT93C46C is enabled through the Chip Select pin (CS) , and accessed vi a 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.

The AT93C46C is available in 4.5V to 5.5V, 2.7V to 5.5V, and 2.5V to 5.5V versions.

3-Wire Serial EEPROM

1K (64 x 16)

AT93C46C

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

CS SK

DI

DO

CS SK

DI

DO

8-Pin PDIP

1 2 3 4

8-Pin SOIC

1 2 3 4

8

VCC

7

DC

6

NC

5

GND

VCC

8

DC

7

NC

6

GND

5

3-Wire, 1K Serial E

2

PROM

Rev. 1122A–07/98

1

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

*NOTICE: Stresses beyond those listed under “Absolute

Maximum Ratings” may cause permanent damage to the de vic e. T his is a stres s 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.

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

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

2

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

OUT

= 0V

AT93C46C

DC Characteristics

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

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

T

AC

Symbol Parameter Test Condition Min Typ Max Units

V V V I

I I I I I V

V V

V

CC1

CC2

CC3

CC

SB1

SB2

SB3

IL

OL

IL1 IH1

OL1 OH1

OL2 OH2

(1)

Supply Voltage 2.5 5.5 V Supply Voltage 2.7 5.5 V Supply Voltage 4.5 5.5 V Supply Current

V

= 5.0V

CC

READ at 1.0 MHz 0.5 2.0 mA

WRITE at 1.0 MHz 0.5 2.0 mA Standby Current VCC = 2.5V CS = 0V 14.0 20.0 µA Standby Current VCC = 2.7V CS = 0V 14.0 20.0 µA Standby Current VCC = 5.0V CS = 0V 35.0 50.0 µA Input Leakage VIN = 0V to VCC 0.1 1.0 µA Output Leakage VIN = 0V to VCC 0.1 1.0 µA Input Low Voltage

Input High Voltage Output Low Voltage

Output High Voltage Output Low Voltage

Output High Voltage

2.5V ≤ VCC ≤ 5.5V

4.5V ≤ V

2.5V ≤ V

≤ 5.5V

CC

≤ 2.7V

CC

I

= 2.1 mA 0.4 V

OL

I

= -0.4 mA 2.4 V

OH

= 0.15 mA 0.2 V

I

OL

IOH = -100 µAV

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

-0.6

V

x 0.7

CC

- 0.2 V

CC

x 0.3

V

CC

V

+ 1

CC

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

t

SK

SKH

SKL

CS

CSS

SK Clock Frequency 4.5V ≤ VCC ≤ 5.5V

2.7V ≤ V

2.5V ≤ V

≤ 5.5V

CC

≤ 5.5V

CC

SK High Time 4.5V ≤ VCC ≤ 5.5V

2.7V ≤ V

2.5V ≤ V

≤ 5.5V

CC

≤ 5.5V

CC

SK Low Time 4.5V ≤ VCC ≤ 5.5V

2.7V ≤ V

2.5V ≤ V

≤ 5.5V

CC

≤ 5.5V

CC

Minimum CS Low Time 4.5V ≤ VCC ≤ 5.5V

2.7V ≤ V

2.5V ≤ V

≤ 5.5V

CC

≤ 5.5V

CC

CS Setup Time Relative to SK 4.5V ≤ VCC ≤ 5.5V

2.7V ≤ V

2.5V ≤ V

≤ 5.5V

CC

≤ 5.5V

CC

0 0 0

250 250 500

50 50

100

2 1

0.5

MHz

ns

3

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

t

DIS

t

CSH

t

DIH

t

PD1

t

PD0

t

SV

t

DF

t

WP

Endurance

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

DI Setup Time Relative to SK 4.5V ≤ VCC ≤ 5.5V

2.7V ≤ V

2.5V ≤ V

≤ 5.5V

CC

≤ 5.5V

CC

100 100

200 CS Hold Time Relative to SK 0 ns DI Hold Time Relative to SK 4.5V ≤ VCC ≤ 5.5V

2.7V ≤ V

2.5V ≤ V

≤ 5.5V

CC

≤ 5.5V

CC

Output Delay to ‘1’ AC Test 4.5V ≤ VCC ≤ 5.5V

2.7V ≤ V

2.5V ≤ V

≤ 5.5V

CC

≤ 5.5V

CC

Output Delay to ‘0’ AC Test 4.5V ≤ VCC ≤ 5.5V

2.7V ≤ V

2.5V ≤ V

≤ 5.5V

CC

≤ 5.5V

CC

CS to Status Valid AC Test 4.5V ≤ VCC ≤ 5.5V

≤ 5.5V

CC

≤ 5.5V

CC

≤ 5.5V

CC

≤ 5.5V

CC

CS to DO in High Impedance AC Test

CS = V

2.7V ≤ V

2.5V ≤ V

4.5V ≤ VCC ≤ 5.5V

IL

2.7V ≤ V

2.5V ≤ V

100

200

250 250 500

100 100 200

Write Cycle Time 0.1 10 ms

4.5V ≤ V

(1)

5.0V, 25°C, Page Mode 1 M Write Cycle

≤ 5.5V 1 ms

CC

ns

Instruction Set for the AT93C46C

Address

Instruction SB Op Code

READ 1 10 A

5

- A

0

EWEN 1 00 11XXXX Write enable must precede all programming modes. ERASE 1 11 A WRITE 1 01 A

5

- A

0

ERAL 1 00 10XXXX Erases all memory locations. Valid only at V WRAL 1 00 01XXXX Writes all memory locations. Valid only at VCC = 4.5V to 5.5V. EWDS 1 00 00XXXX Disables all programming instructions.

4

AT93C46C

Commentsx 16

Reads data stored in memory, at specified address.

Erase memory location An - A0. Writes memory location An - A0.

= 4.5V to 5.5V.

CC