• Totally static 8-bit CPU
• ROM: 512K x 8-bit
• RAM: 4K x 8-bit
• Stack: Up to 128-level deep
• Operation voltage: 2.4V ~ 3.4V
• Operation frequency:
  - 3.0Mhz@2.4V(min.)
  - 4.0Mhz@2.7V(min.)
• Built-in double DC-DC voltage converter for LCD driver
• I/O ports
  - 24 CMOS bidirectional bit programmable I/O pins
  - Bit programmable pull-up for input pins
  - Hardware de-bounce option for Port-A
• Low voltage detector
• Timer/Counter:
  - Two 8-bit timer/16-bit event counter
  - One 8-bit Base timer
• 6 hardware interrupts with dedicated exception vectors
  - External interrupt (edge triggered)
  - Timer0 interrupt
  - Timer1 interrupt
  - Base timer interrupt
  - Port-A interrupt (transition triggered)
  - DAC reload interrupt
• Dual clock sources with warm-up timer
  - Low frequency crystal oscillator.....................................................32768 Hz
  - RC oscillator.......................................................................................500K ~ 4M Hz
  - High frequency crystal/resonator oscillator (code option).........455K~4M Hz
• Direct memory access (DMA)
  - Block-to-Block move
  - Block to Single port
• LCD controller/driver
  - 16-level contrast control
  - 1168 (73x16) dots (1/16 duty, metal option)
  - 1560 (65x24) dots (1/24 duty, metal option)
• Programmable sound generator (PSG)
  - Two channels with three playing modes
  - Tone/noise generator
  - 16-level volume control
• PWM DAC: Three modes up to 8-bit resolution
• Three power down modes:
  - WAI0 mode
  - WAI1 mode
  - STP mode

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