www.microchip.com/UNIO
UNI/O™ Serial EEPROMs
Single I/O Bus Interface
UNI/O™ EEPROM Memory
Need more microcontroller pins for new features?
Want to stay with a low pin-count microcontroller rather than
switching to a more expensive one?
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, memory array and command
functions through a single pin.
■ Single I/O Interface
■ 1-16 Kbit Memory Densities
■ 1.8-5.5V Operating Voltage
■ 10-100 KHz Operating Frequency
■ 1 Million Erase/Write Cycles
■ Software Write Protect
– ¼, ½ or Full Array
■ Status Register
■ Set/Erase entire memory with a single command
■ ESD Protection > 4 KV
■ Noise Filtration Circuitry
■ Packaging: 3-pin SOT-23
8-pin SOIC, MSOP & TDFN
■ Temperature: Industrial (-40ºC to +85ºC)
Extended (-40ºC to +125ºC)
Advanced Features
Benefi ts
www.microchip.com/UNIO
A single I/O EEPROM can simplify your design and
reduce system cost
■ Free up pins on the MCU
–
Add a new feature to your application
–
Move to a smaller MCU
■ Free up pins on your connector
–
Smaller connector = lower cost
■ More compact design
Introducing the UNI/O EEPROM Family
New Communications Standard
UNI/O bus: First introduced on serial EEPROMs
■ Manchester Communications
– Clock and data in a single serial bit stream
– Signal transition in the middle of bit period
■ MCU establishes data rate
■ EEPROM tracks data rate − Frequency and Phase
■ Software Addressable
Use your existing hardware
■ UNI/O EEPROMs can fi t in existing sockets
– Pin-out similar to I2C and SPI EEPROMs
– 8-pin packages share Vcc, Vss and Data Line
Get Started With a Simple Evaluation
i hi /UNIO
Current EEPROM 8-lead Pin Outs
Use Microchip’s software drivers
■ UNI/O software drivers available for many popular
microcontrollers
■ New drivers coming
www.microchip.com/UNIO
Inside the UNI/O EEPROM
Status
Register
HV Generator
I/O Control
Logic
Current-
Limited
Slope
Control
EEPROM
Array
Page Latches
Y Decoder
Sense Amp.
R/W Control
Memory
Control
Logic
X
Dec
I/O Communication
• Manchester encoding/
decoding
• Synchronization circuitry
• Software addressing
Robust Interface
• Current limited
• Protection during short circuits
and bus confl icts
• Superior EMI performance
Memory Control Logic
• Controls for internal clock and data
• Byte or page write
• Erase all or set all
Status Register
• Write In Process (WIP) bit
• Write Enable Latch (WEL) bit
• Block protection bits
– Write protect for ¼,½ or
full array
EEPROM Memory
• Density: 1K, 2K, 4K, 8K & 16K
• Endurance > 1 Million Cycles
• Data Retention > 200 Years
Page Buffer
• 16 byte page
GND
SCIO
VCC
MPLAB® Starter Kit for Serial Memory Products
(Part Number DV243003)
www.microchip.com/UNIO
Designing with the UNI/O Serial EEPROM
Total Endurance™ Software
Microchip’s
Total Endurance
Software
provides you with
unprecedented
visibility
into Serial
EEPROM based
applications.
Describe your
system to
an advanced
mathematical model (with a friendly human
interface), and it will predict the performance
and reliability of the Serial EEPROM within that
environment. Design trade-off analysis that
formerly consumed days or weeks can now be
accomplished in minutes with a level of accuracy
that delivers a truly robust design.
mathematical model (with a frie
Resources to help you get started quickly ...
Additional Resources
Microchip Advanced Part Selector (MAPS): www.microchip.com/maps
Getting Started with UNI/O™ Webinar: http://techtrain.microchip.com/webseminars
Over 50 different application notes, many with source code options can be found at: www.microchip.com/appnotes
Get started with Microchip’s Serial EEPROMs in four easy steps: www.microchip.com/eeprom
UNI/O Bus Software Drivers
MCU Family Device Architecture Language Timer Resources
Data Bus Instruction Word
PIC® MCU
PIC10F202
PIC12F508
PIC16F505
8-bit 12-bit Assembly Firmware
PIC MCU PIC12F609
PIC16F610 8-bit 14-bit Assembly Firmware
PIC MCU PIC12F683
PIC16F616 8-bit 14-bit Assembly HW Peripheral
PIC MCU PIC12F683
PIC16F616 8-bit 14-bit C HW Peripheral
PIC MCU PIC18F1220 8-bit 16-bit Assembly Firmware
PIC MCU PIC18F24J10 8-bit 16-bit Assembly HW Peripheral
PIC MCU PIC18F24J10 8-bit 16-bit C HW Peripheral
PIC MCU PIC24FJ128GA010 16-bit 24-bit C HW Peripheral
dsPIC® DSC dsPIC33F256GP710 16-bit 24-bit C HW Peripheral
PIC MCU PIC32XXX 32-bit 32-bit C HW Peripheral
ARM7 Core AT91SAM7S256 32-bit 32-bit C HW Peripheral
8051 89LPC952 8-bit 8-bit Assembly HW Peripheral
8051 89LPC952 8-bit 8-bit C HW Peripheral
MSP430
MSP430F1232 16-bit 16-bit C HW Peripheral
Increase productivity, reduce time to market and create
a rock-solid design using this sophisticated development
system. The MPLAB Starter Kit includes everything necessary
to quickly program and develop a robust and reliable Serial
EEPROM design, and reduce the time required for system
integration and hardware/software debug.
■ Windows® 2000, XP and Vista™ operating systems
■ Total Endurance™ software model
■ MPLAB Starter Kit board and user interface software
■ Quick start guide
■ Serial EEPROM sample pack
I d ti it d ti t k t d
For the most up-to-date information visit: www.microchip.com/UNIO
UNI/O Serial EEPROM Product Specifi cations
UNI/O Product Family
Device Density
(bits) Organization Page Size
(bytes)
Operating
Voltage
Temperature
Range Packages
11AA010 1K 128 x 8 16 1.8-5.5V I TT, SN, MNY, MS, P
11LC010 1K 128 x 8 16 2.5-5.5V I, E TT, SN, MNY, MS, P
11AA020 2K 256 x 8 16 1.8-5.5V I TT, SN, MNY, MS, P
11LC020 2K 256 x 8 16 2.5-5.5V I, E TT, SN, MNY, MS, P
11AA040 4K 512 x 8 16 1.8-5.5V I TT, SN, MNY, MS, P
11LC040 4K 512 x 8 16 2.5-5.5V I, E TT, SN, MNY, MS, P
11AA080 8K 1024 x 8 16 1.8-5.5V I TT, SN, MNY, MS, P
11LC080 8K 1024 x 8 16 2.5-5.5V I, E TT, SN, MNY, MS, P
11AA160 16K 2048 x 8 16 1.8-5.5V I TT, SN, MNY, MS, P
11LC160 16K 2048 x 8 16 2.5-5.5V I, E TT, SN, MNY, MS, P
Note: All devices are Pb-Free and RoHS compliant.
Package Type:
TT 3-SOT-23
SN 8-SOIC (150 mil)
MS 8-MSOP
MNY 8-TDFN (2x3)
P 8-PDIP
Operating Temperature Range:
I: Industrial (-40°C to +85°C)
E: Extended Industrial Range (-40°C to +125°C)
Tape and Reel
T: Tape and Reel
blank: Tube
Custom Addressing
Memory Size:
01 1 Kbit
02 2 Kbit
04 4 Kbit
08 8 Kbit
16 16 Kbit
Voltage:
LC 2.5V-5.5V
AA 1.8V-5.5V
Product Prefi x:
11 UNI/O™ EEPROM
Part Number Suffi x Designations
Ordering information for Microchip UNI/O Memory products.
11 LC 01 0 T -I /TT
Packages Available for UNI/O EEPROM Memory
Shown approximate size.
3-SOT23 (TT)
3 x 3 mm
8-TDFN (MNY)
2 x 3 mm
8-MSOP (MS)
3 x 5 mm
8-SOIC (SN)
5 x 6 mm
8-PDIP (P)
8 x 9.5 mm
Information subject to change. The Microchip name and logo, the Microchip logo, MPLAB and PIC are registered trademarks of
Microchip Technology Incorporated in the U.S.A. and other countries. Total Endurance and UNI/O are a trademarks of Microchip
Technology Incorporated in the U.S.A. and other countries. All other trademarks mentioned herein are property of their respective
companies. © 2009, Microchip Technology Incorporated. All Rights Reserved. Printed in the U.S.A. 2/09
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