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H8S/2668

Obsolete

High-end Microcontrollers for Automotive Control and Factory Automation Applications

Overview

The H8S/2668 Group is supported only for customers who have already adopted these products. The RX651 Group is recommended for new designs.

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Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.

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FAQs

  1. (H8S/2668) How does the H8 instruction prefetch provide a performance increase?

    By pre-fetching the first word of the next instruction during the execution stage of the current instruction, bus idle times can be kept to a minimum, thus increasing performance.

    Mar 23, 2009
  2. (H8S/2668) What are the advantages and disadvantages of DMAC over DTC?

    Disadvantages : Limited number of channels / Limited number of trigger sources / Complexity Advantages : Speed of transfer / Easier to configure / Able to use without memory

    Mar 23, 2009
  3. How many interrupt levels does H8S/21xx Interrupt Controller have?

    The H8S/21xx interrupt controller can be operated in one of two modes. In mode 0 all interrupts have the same priority, except for vector address priority. If an interrupt is enabled, it will be excepted if the I bit in the CCR is cleared to 0. If the ...

    Mar 23, 2009
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