Sitronix ST2064B

The ST2064B is a W65C02S based 8-bit microcontroller designed with CMOS silicon gate technology. This single chip microcontroller is useful for translator, databank and other consumer applications. It integrates with SRAM, mask ROM, LCD controller/driver, DC-DC voltage converter, I/O ports, timers, PSG and PWM DAC. This chip also builds in dual oscillators for the chip performance enhancement.

Features:

• 8-bit static pipeline CPU
• ROM: 64K x 8-bit
• RAM: 2432 x 8-bit
• Stack: Up to 128-level deep
• Operation voltage:
  • DC-DC Converter Enable:2.4V ~ 3.6V
  • DC-DC Converter Disable:2.4V ~ 5.5V
• Built-in double DC-DC voltage converter for LCD driver
• I/O ports
  • 24 CMOS bidirectional bit programmable I/O pins, sixteen (Port-B/C) are shared with LCD drives
  • 8 open drain output pins are shared with LCD drives
  • 2 CMOS output pins are shared with PSG drives
  • 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[7~0] interrupt (transition triggered)
  • DAC reload interrupt
• Dual clock sources with warm-up timer
  • Low frequency crystal oscillator
  • 32768 Hz
  • RC oscillator 500K ~ 4M Hz
  • CPU clock 250K ~ 2M Hz
  • High frequency crystal/resonator oscillator (code option)
  • 455K~4M Hz
  • CPU clock 227.5k~2MHz
• LCD controller/driver
  • Resolution: 32x8 ~ 48x16, maximum 768 dots
  • Two clock source options: RC and resonator oscillator
  • Internal bias resistors (1/5 bias/1/4 bias) with 16-level driving strength control
  • Up to 16-level contrast control
  • Keyboard scan function supported on 16 shared segment drives
• Programmable sound generator (PSG)
  • Two channels with three playing modes
  • Tone/noise generator
  • 16-level volume control
  • Dedicated outputs for directly connection to buzzer
• PWM DAC: Three modes up to 8-bit resolution
• Three power down modes:
  • WAI0 mode
  • WAI1 mode
  • STP mode