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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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The resistor limits the current into the LED. Input voltages between 1. NI and the extensive network of NI Alliance Partners provide a wide range of professional services datasjeet that together, we can assist you with the design, development, and deployment of even the most complex systems.

You can use them to directly drive LEDs, relays, transistors, opto-isolators or other digital logic devices.

Even so, as a service to those looking for descriptions of the protocol, the datasheets are provided here: Gain the skills you need to design and develop high-quality applications:. To learn more about service programs for hardware and systems, see ni. Most datasheets listed on this page may be downloaded as a single 6. Overview Pricing Services Resources This Freescale HCS12 Microcontroller Experimenter has been designed specifically for teaching microcontroller theory in electrical and computer engineering curricula.

The consequence of this hysteresis is that the threshold between a logic high and a logic low depends on whether the input voltage is rising or falling.

But please be careful — whenever these outputs are connected to external devices you hfs12 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 eatasheet voltage exceeds the supply range. See All Countries and Regions.

Freescale HCS12 9S12 Datasheets

The maximum current you should ever sink with the pin is 25 ma. The detailed specifications provide the timing information you may sometimes need when writing c language application programs. 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.

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. 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.


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. Mosaic Industries web site. As the user manual for its Enhanced Capture Time module provides some specifications that were neglected in the manual for the MC9S12DP version, it is provided here. Through our standard NI technical support program, we can help you:. For a brief introduction to the microcontroller used, see the following:.

They will always report a logical low if the input voltage is less than 0. Index to all documents, tutorials, and user guides. 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.

The following graphs illustrate the variation. The specified maximum instantaneous current is 25 mA into or out of any one pin at a time.

That 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 and an equivalent series resistance of 40 ohms 1. The following diagram shows the measured threshold for a single pin. To access NI technical support services for your hardware, visit ni. This page is about: Nevertheless, any circuitry connected to the processor should take care to: Service Programs for Hardware At NI, we produce high-performance hardware and are committed to helping you maintain that performance for years to come.

HCS12 Datasheet(PDF) – Motorola, Inc

Prototyping and feasibility analysis Startup, consulting, and development assistance System integration Migration and upgrade assistance For more information on NI professional services and the Alliance Partner Network, dtasheet ni. If datsaheet is the possibility of the output pin being driven to a negative voltage level it is better to prevent excessive power dissipation in the processor package by externally clamping the voltage to ground V SS with a Schottky diode.


From the LED datasheet we note that its forward voltage at a current of 10 mA is specified to be 2. We calculate it as.

Device Overview and Block Diagram. When the input voltage rises from a logic 0 toward a logic 1 level, the datasneet 1 is recognized when the voltage rises to 2. Pre-coded C-language routines make it easy to access these features.

Digital I/O – Hardware Interfacing

Through our standard NI technical support program, we can help you: This manual describes the features and operation of the core central processing unit, or CPU, and development support functions used in all HCS12 microcontrollers. 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.

Load circuitry that requires significant current to be sourced or sunk by the digital output should include external hcs21 to ensure that hcz12 absolute maximum rating of 25 mA per output pin is never exceeded.

Learn more about our privacy datasheft. Index to datasyeet documents, tutorials, and user guides. Negative going noise on the input voltage will not cause a false transition back to a logic 0 unless it is greater than 0. The actual threshold values and degree of hysteresis will vary from pin to pin. 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:.

Using this bundle, educators have an integrated platform to teach the design and test of microcontroller systems. Likewise, during a logic 1 to logic 0 transition, the input is protected against positive going noise spikes of less than 0. Gain the skills you need to design and develop high-quality applications: The hysteretic input works together with any source impedance driving the pin dagasheet provide some immunity against noise and to debounce the input signal.

Protecting the 9S12 input and output pins. The maximum current you should ever source from the pin is 25 ma. Overview of the MC9S12A microcontroller.