AT93C46C ATMEL Corporation, AT93C46C Datasheet

AT93C46C

Manufacturer Part Number

AT93C46C

Description

3-Wire Serial EEPROM

Manufacturer

ATMEL Corporation

Datasheets

1.AT93C46C-10PC-2.5.pdf (11 pages)

2.AT93C46C.pdf (11 pages)

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Features

•

Description

The AT93C46C provides 1024 bits of serial electrically-erasable programmable read

only memory (EEPROM) organized as 64 words of 16 bits each. The device is opti-

mized for use in many industrial and commercial applications where low-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 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 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 AT93C46C is available in 4.5V to 5.5V, 2.7V to 5.5V, and 2.5V to 5.5V versions.

Pin Configurations

Pin Name

GND

VCC

Low-Voltage and Standard-Voltage Operation

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

Automotive Grade and Extended Temperature Devices Available

8-Pin PDIP and JEDEC SOIC Packages

– 5.0 (V

– 2.7 (V

– 2.5 (V

– Endurance: 1 Million Write Cycles

– Data Retention: 100 Years

– ESD Protection: > 4000V

Function

Chip Select

Serial Data Clock

Serial Data Input

Serial Data Output

Ground

Power Supply

No Connect

Don’t Connect

= 4.5V to 5.5V)

= 2.7V to 5.5V)

= 2.5V to 5.5V)

8-Pin SOIC

8-Pin PDIP

VCC

GND

VCC

GND

3-Wire

Serial EEPROM

1K (64 x 16)

AT93C46C

3-Wire, 1K

Serial E

PROM

Rev. 1122A–07/98

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