The DF6808 is an advanced, 8-bit, MCU IP Core with highly sophisticated, on-chip peripheral capabilities. The DF6808 soft core is binary-compatible with the industry standard Motorola 68HC08 8-bit microcontroller. It can achieve a performance of 45 – 100 million instructions per second. The DF6808 has a FAST architecture that is 3.2 times faster comparing to the original implementation. In the standard configuration the core has major peripheral functions integrated on-chip. The DF6808 Microcontroller Core contains a full-duplex UART – Asynchronous Serial Communication Interface (SCI) and Synchronous Serial Peripheral Interface (SPI). The main 16-bit, free-running timer system has two input capture lines and two output-compare lines. Self-monitoring circuitry is included on-chip, to protect against system errors. The Computer Operating Properly (COP) watchdog system protects against software failures. An illegal opcode detection circuit provides a non-maskable interrupt if illegal opcode is detected. Two software-controlled power-saving modes – WAIT and STOP are available to preserve additional power. These modes make the DF6808 IP Core especially attractive for automotive and battery-driven applications. The DF6808 is fully customizable – it is delivered in the exact configuration to meet your requirements. There is no need to pay extra for unused features and wasted silicon. It includes fully automated test bench with complete set of tests, allowing easy package validation, at each stage of SoC design flow. Each DCD’s DF68XX Core has a built-in support for a proprietary Hardware Debug System called DoCD™. It’s a real-time hardware debugger which provides debugging capability of a whole System-on-Chip (SoC). Unlike the other on-chip debuggers the DoCD™ enables non-intrusive debugging of a running application. It can halt, run, step into or skip an instruction, read/write any contents of microcontroller, including all registers, SFRs, including user defined peripherals, data and program memories.

Key features


  • FAST architecture – 3.2 times faster than the original implementation
  • Software compatible with 68HC08 industry standard
  • Configurable Harvard or Von Neumann architectures
  • 11 times faster multiplication
  • 64 bytes of System Function Registers space (SFRs)
  • Up to 64K bytes of Data Memory
  • Up to 64K bytes of Code Memory
  • De-multiplexed Address/Data Bus to allow easy memory connection
  • Two power saving modes: STOP, WAIT
  • Ready pin allows Core to operate with slow program and data memories.
  • Fully synthesizable
  • Static synchronous design
  • No internal reset generator or gated clock
  • Positive edge clocking and no internal tri-states
  • Scan test ready
  • 800 MHz of virtual clock frequency compared to original implementation
  • USB, Ethernet, I2C, SPI, UART, CAN, LIN, HDLC, Smart Card interfaces available


IP Core Architecture type Memory space DoCD UART (SCI) SPI M/S IO Ports Watchdog Timer Timer Compare / Capture Pulse accumulator READY pin Chip Selects Gatecount
DF6808 fast 64k 4 1 2/2 - 8300
DF6805 fast 64k 4 1 2/2 - 7000
D6802 legacy 64k - - - - -
D6803 legacy 64k 4 1 + - 6000
DF6802 fast fast - - - - -
DF6803 fast 64k 4 1 + - -
DF6811F fast 64k 7 1 5/4 - 14000
DF6811E fast 64k 5 1 5/4 - 12000
DF6811K fast 1M 10 3 13/6 - 21000
D68HC11E legacy 64k 5 1 5/4 - 13000
D68HC11F legacy 64k 7 1 5/4 4 13500
D68HC11K legacy 1M 10 3 13/6 4 21000


DoCD Debugger

Power of Innovation is our primary target. That’s why our R&D focuses on every single IP Core detail. As a result of that concern, some unique solutions were born. One of them is the D68XX on-Chip Debugger (DoCD™), which is a complete debugging system dedicated for all 68XX Cores offered by DCD.

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DoCD Debugger

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