Microchip logo
  • All
  • Products
  • Documents
  • Applications Notes
product primary image

MCS3122

Status: In Production

Features:

  • Programmable 32-bit serial number
  • Programmable 32-bit serial number for seed transmissions
  • AES-128 block cipher
  • Programmable 128-bit crypt key
  • 160/192-bit transmission code length
  • 32-bit unencrypted portion
  • 128-bit encrypted, code hopping portion
  • 32-bit authorization check (optional)
  • 2.0 to 3.7V operation
  • Three switch inputs
  • Seven functions available
  • One active-low LED drive
  • Configurable maximum code word
  • Configurable bit rate
  • Configurable modulation, supporting FSK and OOK
  • Configurable data modulation, supporting PWM and Manchester
  • Button inputs have internal pull-up resistor
  • 14pin 4.4mm TSSOP Package
View More
Overview
Documents
Development Environment
RoHS Information
Add To Cart

Device Overview

Summary

The MCS3122 is an advanced KeeLoq® encoder, designed for secure Remote Keyless Entry (RKE) and secure remote control systems. Typical applications include vehicles and home garage door openers. The MCS3122 delivers a cost effective, yet secure solution requiring very few external components.

KeeLoq® is a Microchip proprietary technology deployed in millions of security applications. KeeLoq® is licensed for exclusive use on Microchip products.

Additional Features

    Advanced KEELOQ® Technology:

    • Programmable 32-bit serial number
    • Programmable 32-bit serial number for seed transmissions
    • AES-128 block cipher
    • Programmable 128-bit crypt key
    • 160/192-bit transmission code length
    • 32-bit unencrypted portion
    • 128-bit encrypted, code hopping portion
    • 32-bit authorization check (optional)

    Operating Features:

    • 2.0 to 3.7V operation
    • Three switch inputs
    • Seven functions available
    • One active-low LED drive
    • Configurable maximum code word

    RF:

    • Configurable bit rate
    • Configurable modulation, supporting FSK and OOK
    • Configurable data modulation, supporting PWM and Manchester

    Other:

    • Button inputs have internal pull-up resistor
    • 14pin 4.4mm TSSOP Package
Parametrics
Name
Value
Device Description
KEELOQ® Encoder Devices
Operating Voltage (V)
2.0 - 3.7
Function Codes
7
Transmission Code Length Bits
160
Code Hoppings Bits
128
Freq. Range
310-928
Modulation
ASK/FSK
Output Power dBm
0/+10
LEDs
1
Encryption Key Length
128
Seed Length
128
ICSP
Yes

Documents

Jump to:

Development Environment

  • Integrated Development Environments
  • Programmers
Integrated Development Environments
MPLAB-X-IDE
MPLAB X Integrated Development Environment (IDE) ( MPLAB-X-IDE )

MPLAB® X Integrated Development Environment (IDE) is an expandable, highly configurable software program that incorporates powerful tools to help you discover, configure, develop, debug and qualify embedded designs for most of Microchip’s microcontrollers, microprocessors and digital signal controllers.
MPLAB X IDE works seamlessly with the MPLAB development ecosystem of

...

Learn More
Programmers
MPLAB PICkit 4 In-Circuit Debugger
MPLAB PICkit 4 In-Circuit Debugger ( PG164140 )

Fast programming, increased functionality, at the same price as its predecessor, the PICkit™ 3.

The MPLAB PICkit 4 now has Programmer-to-Go functionality for 8-bit and 32-bit PIC MCUs. The firmware update comes with MPLAB X IDE v5.25. More to come!


The MPLAB® PICkit™ 4 In-Circuit Debugger/Programmer allows fast and easy debugging and

...

Learn More
Add To Cart
MPLAB ICD 4 In-Circuit Debugger
MPLAB ICD 4 In-Circuit Debugger ( DV164045 )

The MPLAB® ICD 4 In-Circuit Debugger/Programmer is Microchip’s fastest, cost-effective debugging and programming tool for PIC® and SAM Microcontrollers (MCUs), dsPIC® Digital Signal Controllers (DSCs), and CEC flash microcontrollers. This speed is provided by a SAME70 MCU with 300 MHz, 32-bit MCU with 2MB of RAM and a high-speed FPGA to yield

...

Learn More
Add To Cart
PICkit 3 In-Circuit Debugger
PICkit 3 In-Circuit Debugger ( PG164130 )
(Not Recommended for new design)

The PICkit 3 is not recommended for new designs and no new device support will be added to it as of June 1, 2019. For new designs, please see the MPLAB PICKit 4.

Microchip’s PICkit™ 3 In-Circuit Debugger/Programmer uses in-circuit debugging logic incorporated into each chip with Flash memory to

...

Learn More
MPLAB PM3 Universal Device Programmer
MPLAB PM3 Universal Device Programmer ( DV007004 )

The MPLAB® PM3 Universal Device Programmer is easy to use and operates with a PC or as a stand-alone unit, and programs Microchip's entire line of PIC® devices as well as the latest dsPIC® DSC devices. When used standalone, data can be loaded and saved with the SD/MMC card (not included).

  • Socket: AC164306   PartNo: MCS3122 (14ST)
Learn More
Add To Cart
MPLAB ICD 3 In-Circuit Debugger
MPLAB ICD 3 In-Circuit Debugger ( DV164035 )
(Not Recommended for new design)

 The MPLAB ICD 3 is a mature product and no new device support will be added to it as of June 1, 2019. For new designs, consider using the MPLAB ICD 4 (DV164045)

MPLAB® ICD 3 In-Circuit Debugger System is Microchip's most cost effective high-speed hardware debugger/programmer for

...

Learn More

RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MCS3122-I/ST
0.060000
0.125000
14
TSSOP
4.4mm
Matte Tin
e3
MCS3122T-I/ST
0.060000
0.246800
14
TSSOP
4.4mm
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

Buy from the Microchip Store

Grid
View
Table
View
Filter:
Apply
Clear
Only show products with samples
Product
Leads
Package Type
Temp Range
Packing Media
5K Pricing
Buy