11AA020T-I/CS16K by Microchip Technology

1.8V UNI/O® Serial EEPROM with 2Kb of memory

Status: Active
Series: 11AA020
RoHS: Compliant
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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 UNI/O® bus 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 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.
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Features

Single I/O Interface
2 Kbit Memory Density
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 > 4kV
Noise Filtration Circuitry

Specifications

Density (Organization) 2K bit (x8)
Operating Voltage Min. (V) 1.8
Oper Voltage Max (V) 5.5
Max. Clock Freq. 100 kHz
Page Size (bytes) 16
Write Protected True
Write Protect Scheme Quarter, Half, Whole Array
Endurance 1,000,000
Data Retention (Years) 0
Battery Backup False

Resources


Application Notes
AN1019 - EEPROM Endurance Tutorial
AN1196 - Using a Timer to Interface Mid-Range PIC(R) MCUs with UNI/O(R) Bus-Compatible Serial EEPROMs
AN1187 - Using a Timer to Interface PIC18 MCUs with UNI/O(R) Bus-Compatible Serial EEPROMs
AN1194 - Recommended Usage of Microchip UNI/O(R) Bus-Compatible Serial EEPROMs
AN1186 - Using C and a Timer to Interface MSP430 MCUs with UNI/O(R) Bus-Compatible Serial EEPROMs
AN1185 - Using C and a Timer to Interface 8051 MCUs with UNI/O(R) Bus-Compatible Serial EEPROMs
AN1184 - Using a Timer to Interface 8051 MCUs with UNI/O(R) Bus-Compatible Serial EEPROMs
AN1188 - Interfacing Mid-Range PIC(R) MCUs with UNI/O(R) Bus-Compatible Serial EEPROMs
AN1191 - Using C18 and a Timer to Interface PIC18 MCUs with UNI/O(R) Bus-Compatible Serial EEPROMs
AN1183 - Interfacing PIC18 MCUs with UNI/O(R) Bus-Compatible Serial EEPROMs
AN1174 - Interfacing Baseline PIC(R) MCUs with UNI/O(R) Bus-Compatible Serial EEPROMs
AN1213 - Powering a UNI/O(R) Bus Device Through SCIO
AN1174 - Interfacing Baseline PIC(R) MCUs with UNI/O(TM) Bus-Compatible Serial EEPROMs (Japanese)
AN1236 - Using C30 and a Timer to Interface dsPIC33 DSCs and PIC24 MCUs with UNI/O(R) Bus-Compatible Serial EEPROMs
AN1251 - Using HI-TECH C(R) and a Timer to Interface Mid-Range PIC(R) MCUs with UNI/O(R) Serial EEPROMs



Reference Manuals
UNI/O® Bus Specification

Environmental Information

JEDEC Indicator e1
ROHS Compliant
China EFUP Compliant
Device Weight (g) 0.0048
Shipping Weight (kg) 0.2
Lead Count 4
Package Type CSP
Package Width or Size Varies
Soldering Composition SAC

Alternative Descriptions

EEPROM Serial 2K-bit 256 x 8 2.5V/3.3V/5V 4-Pin CSP T/R | Avnet America


Frequently Asked Questions

Where can I find additional details, specifications and documents for a 11AA020T-I/CS16K?

Additional datasheets, footprints and schematics for 11AA020T-I/CS16K are listed on our Part Details page. You can also find images and similar parts to 11AA020T-I/CS16K on this page.

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Is the 11AA020T-I/CS16K RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Microchip Technology.

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Authorised distributors including Avnet America have stock available or on a lead time for 11AA020T-I/CS16K.

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