WDC 65C21 - Features of The W65C21S

Features of The W65C21S

  • Low power CMOS N-well silicon gate technology
  • High speed/Low power replacement for Motorola / Rockwell / AMI / *MOS Technology / MOSTEK / HITACHI / ST Microelectronics / GTE / CMD 6520, 6521, 6820, 6821 PIA’s
  • Two 8-bit bidirectional I/O ports with individual data direction control.
  • Automatic “Handshake” control of data transfers
  • Two interrupts (one for each port) with program control
  • Static to 14MHz operation, with high speed Port A, CA2 outputs.
  • Industrial temperature range
  • 40 Pin Plastic Dip and 44 Pin Plastic PLCC versions
  • 5 volt ± 10% supply requirements
  • Compatible with the 65xx and 68xx family of microprocessors

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