AN989 datasheet(8/16 Pages) MICROCHIP

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Serial Memory Products

11AA010

1 Kb

11AA020

2 Kb

11AA040

4 Kb

11AA080

8 Kb

11AA160

16 Kb

11LC010

11LC020

11LC040

11LC080

11LC160

2.5-5.5V

1.8-5.5V

UNI/O® EEPROM

Using UNI/O EEPROM can free up MCU pins for new features.

Microchip’s new UNI/O Serial EEPROM uses only ONE connection to the

host microcontroller. This compares to two or three pins for I2C, and three

to six pins for Microwire or SPI buses. This new, proprietary bus offers

advanced features like a status register and write-protection on demand,

along with all I/O and memory array and command functions through a

single pin.

Save I/O Pins

A single I/O EEPROM can simplify your design and

reduce system cost

■ Free up pins on the MCU

– Add new features to your application

– Move to a smaller MCU – reduce cost

■ Free up pins on your connector

– Smaller connector – lower cost

■ Single I/O interface – more compact design

Single I/O EEPROM

One I/O for clock, data & control

■ Single I/O interface

■ 1-16 Kbit memory densities

■ 1.8-5.5V operating voltage

■ 10-100 KHz operating frequency

■ Status register, SW write-protect

■ 3-pin SOT-23, 8-pin SOIC, MSOP & TDFN

■ 1M Erase/Write cycles

■ UNI/O software drivers available for many popular microcontrollers See Ap Note section for more information.

■ Convert UNI/O from 3-pins to 2-pins – check out Ap Note AN1213.

VCC

MCU

VCC

I2C™

UNI/O®

VCC

SDA

SCL

Single I/O, No pull-up

resistors needed.

■ Save board space

■ Save pins on the MCU

■ Add additional features

VCC

MCU

SDA

SCL

www.microchip.com/unio

The UNI/O Advantage

AN989 Datasheet(PDF) 8 Page - Microchip Technology

AN989 Datasheet(HTML) 8 Page - Microchip Technology

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