Microchip has introduced what it says is a complete solution for remotely-controlled security systems and authentication applications.
Designers of such systems need an integrated solution that provides control of system power consumption and ensures reliable battery-powered operation.
The new PIC12F635 and PIC16F636 microcontrollers meet these requirements by integrating a Keeloq cryptographic peripheral, the company's nanowatt power management technology, and reliable battery reset and detect features. This includes: programmable low voltage detect, a wake-up reset function, software-controlled brownout reset and an extended watchdog timer.
The Keeloq technology is based on a proprietary, non-linear encryption algorithm that creates a unique transmission on every use, rendering code capture and resend schemes useless. The new devices now feature this encryption algorithm as a hardware peripheral integrated within the PIC microcontroller.
Key additional features of the microcontrollers include: 8 MHz internal oscillator with software clock switching; ultra low power wakeup; up to 3,5 Kbytes of Flash program memory, and up to 256 bytes of EEPROM data memory; 64 or 128 bytes of RAM; analog comparators.
The PIC12F635 and PIC16F636 are supported by the MPLAB integrated development environment, MPLAB ICE 2000 in-circuit emulator, MPLAB PM3 universal device programmer, PICSTART Plus low-cost development system, MPLAB ICD 2 in-circuit debugger/programmer and the PICkit 1 Flash starter kit.
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