68901N04 Datasheet PDF - STMicroelectronics

DESCRIPTION
The MK68901 MFP (Multi-Function Peripheral) is a combination of many of the necessary peripheral functions in a microprocessor system. Included are :
   Eight parallel I/O lines
   Interrrupt controller for 16 sources
   Four timers
   Single channel full duplex USART
  
■ 8 INPUT/OUTPUT PINS
   • Individually programmable direction
   • Individual interrupt source capability
      - Programmable edge selection
■ 16 SOURCE INTERRUPT CONTROLLER
   • 8 Internal sources
   • 8 External sources
   • Individual source enable
   • Individual source masking
   • Programmable interrupt service modes
      - Polling
      - Vector generation
         - Optional In-service status
   • Daisy chaining capability
■ FOUR TIMERS WITH INDIVIDUALLY PRO GRAMMABLE PRESCALING
   • Two multimode timers
      - Delay mode
      - Pulse width measurement mode
      - Event counter mode
   • Two delay mode timers
   • Independent clock input
   • Time out output option
■ SINGLE CHANNEL USART
   • Full Duplex
   • Asynchronous to 65 kbps
   • Byte synchronous to 1 Mbps
   • Internal/External baud rate generation
   • DMA handshake signals
   • Modem control
   • Loop back mode
■ 68000 BUS COMPATIBLE
■ 48 PIN DIP OR 52 PIN PLCC