GENERAL DESCRIPTION
The PCA84C922A, PCA84C922C, PCA84C923A, PCA84C923C and PCA84C923D are members of the PCF84CXXXA CMOS family of microcontrollers and have been designed for use in universal infrared remote commander applications.

FEATURES
• 84CXXX CPU
• ROM, RAM, I/O and keypad configurations are device dependent; see Table 1
• Two test inputs: T0 and T1
• 3 single-level vectored interrupt sources:
    – external (T0/INT and Port 1, for keypad press Wake-up function)
    – Timer/counter (TI)
    – Hardware Modulator interrupt
• 8-bit programmable timer/counter with 5-bit prescaler
• Power saving Idle and Stop modes
• Low power operation: 2 V
• Hardware Modulator
• Watchdog timer
• On-chip oscillator: 1 to 6 MHz
• Single supply voltage: 2.0 to 5.5 V
• Operating temperature: −20 to +70 °C
• Available packages: SO24, SO28, VSO56 and SDIP24.