The HCS12 V Core is a bit processing core using the 68HC12 instruction set architecture (ISA). This makes the Core instruction set. Product Features. ○ Long-distance wireless transmission (1,m in open space /baud rate 5,bps in the air). ○ Working frequency range (MHz. View or download datasheets, user guides, specifications and block diagrams for the Freescale 9S12/HCS12 microcontroller, the processor used by the PDQ.

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This manual describes the features and operation of the core central processing unit, or CPU, and development dtasheet functions used in all HCS12 microcontrollers.

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But please be careful — whenever these outputs are connected to external devices you must stay within the voltage and current capabilities of the output pins. They consist of internal diodes that conduct current from the input pin to the supply or ground rails in the event that the input pin voltage exceeds the supply range.

For a brief introduction to the microcontroller used, see the following:. We calculate it as, Eqn. Overview Pricing Services Resources This Freescale HCS12 Microcontroller Experimenter has been designed specifically for teaching microcontroller theory in electrical and computer engineering curricula.

Our three- or five-year service programs for hardware and systems provide the coverage you need while ensuring lowest total cost datashdet ownership over the life of your system:.

Freescale HCS12 9S12 Datasheets

The Module Mapping Control Guide shows you how to use the control registers for the HCS12 Microcontroller and how to configure the device’s memory map. Our three- or five-year service programs for hardware and systems provide the coverage you need while ensuring lowest total cost of ownership over the life of your system: These digital output pins are very useful because they can directly drive a wide range of devices.


Gain the skills you need to design and develop high-quality applications:. Through our standard NI technical support program, we can help you:. The maximum current you should ever source from the pin is 25 ma.

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You can use them to directly drive LEDs, relays, transistors, opto-isolators or other digital logic devices. With the knowledge, experience, and responsiveness of NI applications engineers in more than 30 languages and 40 countries, we have the technical support resources to ensure your success. However, you should not rely on the internal diodes to prevent damage from excessive voltage.

Limit injected current if excessive voltages can be present. NI equips engineers and scientists with systems that accelerate productivity, innovation, and discovery.

HCS12 Datasheet(PDF) – Freescale Semiconductor, Inc

Excessive voltages are prevented by ensuring that voltages of less than a diode drop below V SS that is, From the LED datasheet we note that its forward voltage at datashert current of 10 mA is specified to be 2. The actual threshold values and degree of hysteresis will vary from pin to pin. This site uses cookies to offer you a better browsing experience. Most datasheets listed on this page may be downloaded as a single 6.

The following graphs show that the resistance of an output pin in either the high or low state is approximately 40 ohms for currents to the maximum of 25 mA. Prevent excessive voltage levels at datsaheet pin; and.

At greater output currents the resistance increases gradually, but the 40 ohm approximation holds good up through the 25 mA maximum. The resistor limits the current into the LED. The following graphs illustrate the variation. Nevertheless, any circuitry connected to the processor should take care to: Pre-coded C-language routines make it easy to access these features. With extensive training options for new and experienced users, we can help you reduce development time and costs through faster learning and increased productivity with your NI hardware and systems.


Datashet is, for currents of less than 10 mA the voltage change is linear with current; it can be modeled as a voltage source of either zero or five volts hcs1 an equivalent series resistance of 40 ohms 1.

Beware however that it is not always clear which specifications are shared by the two versions, and which apply only to the X-version of the processor. Index to all documents, tutorials, and user guides.

These following Freescale datasheets are provided to supplement the documentation on this website. What should the resistor value be? Using this Doc Web. Get up and running faster with system assembly and configuration services Operate on a fixed budget with prepaid repair and calibration services Maintain peak performance with a discounted calibration plan Simply call us to schedule your service—no budget approval needed To learn more about service programs for hardware and systems, see ni.

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Nevertheless, any circuitry connected to the processor should take care to:.