FEATURES

• Low cost . HC05 core 28-pin package On-Chip Oscillator (Crystal or Ceramic Resonator) Phase-Locked Loop (PLL) Synthesizer with programmable speed 4112 bytes of User EPROM (including 16 bytes of User Vectors) 368 bytes of On-Chip RAM 15-Stage Multi-functional Timer with programmable input Real Time Interrupt Circuit Custom Periodic Interrupt Circuit 20 Bidirectional I/O Lines Single-Chip Mode Bootloader Mode Power Saving STOP and WAIT Modes Illegal Address Reset EPROM Mask Option Register (MOR) selectable options: COP Watchdog Timer . . Edge-Sensitive or Edge and Level-Sensitive Interrupt Trigger Custom Periodic Interrupt Rates