68HC11 Header

TK68HC11D0 Microcontroller

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  • Expanded 16-bit timer system with four-stage programmable prescaler
  • Non-return-to-zero (NRZ) serial communications interface (SCI)
  • Power-saving stop and wait modes
  • 64 Kbytes memory addressability
  • Multiplexed address/data bus
  • Serial peripheral interface (SPI)
  • 4 Kbytes of one-time programmable read-only memory (OTPROM)
  • 8-bit pulse accumulator circuit
  • 192 bytes of static random-access memory (RAM) (all saved during standby)
  • Real-time interrupt (RTI) circuit
  • Computer operating properly (COP) watchdog system
  • Available in these packages:
    • 40-pin plastic dual in-line package (DIP)
    • 44-pin plastic leaded chip carrier (PLCC)
    • 44-pin plastic quad flat pack (QFP)



General Description

The TK68HC711D3 contains highly sophisticated on-chip peripheral functions. This high-speed, low-power programmable read-only memory (PROM) MCU has a nominal bus speed of 3 MHz. The fully static design allows operations at frequencies down to dc.

The TK68HC11D3 and TK68HC11D0 are read-only memory (ROM) based high-performance microcontrollers (MCU) based on the TK68HC11E9 design. The TK68L11D0 is an extended-voltage version of the TK68HC11D0 that can operate in applications that require supply voltages as low as 3.0 V. 


The data sheet is available here:  pdf TK68HC11D (1.14 MB)

Note: the information in the pdf file pertains to all the devices with the exceptions noted in Appendix A TK68HC11D3 and TK68HC11D0 and Appendix B TK68L11D0.


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