68hc11 การใช้

• The Freescale 68HC11 is an example of a popular HCMOS microcontroller.
• Originally introduced in the mid-1990s, the architecture is an enhancement of the Freescale 68HC11.
• The 68HC12 adds to and replaces a small number of 68HC11 instructions with new forms that are closer to the 6809 processor.
• Such microcontrollers include some versions of the Intel 8048, the Freescale 68HC11, and the " C " versions of the PIC microcontroller.
• For example, a Linux PC might be used to develop software for a system using a Freescale 68HC11 chip, a processor that cannot run Linux.
• BUFFALO is available for most 68HC11 family derivatives as it generally only depends upon having access to a single UART ( SCI, or Serial Communications Interface, in Motorola parlance ).
• Primary competitors include the somewhat similar 6809 based Motorola 68HC11, the Hitachi H8 family, and Z80-derivatives, such as Toshiba TLCS-870, to name just a few.
• In the early 1990s Motorola produced an evaluation board kit for the 68HC11 with several UARTs, RAM, and an EPROM . The cost of the evaluation kit was $ 68.11.
• Other circuits  most prominently, the RCA 1802, but also several later chips such as the WDC 65C02, the Intel 80C85, the Freescale 68HC11 and some other CMOS chips  use " fully static logic " that has no minimum clock rate, but can " stop the clock " and hold their state indefinitely.