Description:

The CMT2189B is a low-power, embedded OOK transmitter 8-bit

 RISC core MCU for ISM band 240-960MHz low cost wireless transmitter applications. The chip integrates 2kx14b of rewritable program space and a high-efficiency, ultra-low-power RF transmitter  with in-circuit debugging support, up to 8 general-purpose IOs, and low sleep power consumption, making it ideal for a variety of consumer handheld remote control applications.

The CMT2189B operates over the -40°C to +85°C temperature range and 2.0 to 3.6V supply voltage range.

At 433.92MHz, the output +13dBm power consumes only 17.5mA of continuous high level current. By choosing a crystal that corresponds to the frequency, the CMT2189B can operate at different RF frequencies by choosing crystals with corresponding frequencies.

Features:

PIC16 compatible instruction set

 Up to 16MHz clock operating frequency

 2T or 4T instruction cycles

 8-layer hardware stack x 11bit

  2kx14b rewritable program memory (16bytes/page)

 256x8b data EEPROM (16bytes/page)

 128x8b SRAM

  supports online debugging

 support in-system programming ICSP

  Data EEPROM in application programming

 8x general purpose IOs

  1x Timer0 with 8-bit prescaler

  1x Timer 2 with 8-bit pre-divided frequency

  WDT with 7-bit prescaler, overflow frequency approx. 16-2048ms

  Power-up delay counter PWRT

  Low power mode SLEEP

  Multiple wake-up sources: INT, port change interrupt, WDT, data

EEPROM write completion, etc.

 Built-in high speed 16MHz RC oscillator

 Built-in low-speed 32kHz RC oscillator

 Port change interrupt: RA0-RA7

  Program space protection