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The Module Mapping Control Dataeheet shows you how to use the control registers for the HCS12 Microcontroller and how to configure the device’s memory map. Refer to Development Support. Home – IC Supply – Link. XIRQ is often used as a power loss detect interrupt. This pin is always an input and.

Microprocessor Applications: Software and Documentation

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. 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.

The pull-up can be turned dataxheet by clearing. Connecting Hardware to the datasjeet Processor. The XIRQ input provides a means of requesting a nonmaskable interrupt.


Index to all documents, tutorials, and user guides. These following Freescale datasheets are provided to supplement the documentation on this website. MODB have active pull-downs during reset. The BKGD pin has an. During reset, the X bit in the condition code.

The detailed specifications provide the timing information you may sometimes need when writing c language application programs. Mosaic Industries web site. Even so, as a service to those looking for descriptions of the protocol, the datasheets are provided here: There must also be an interlock mechanism at each interrupt source so that the source holds the interrupt line low until the MCU recognizes and acknowledges the interrupt request.

There is an active pull-up on this pin while in reset and immediately out of reset. There is an active pull-up on this pin while in reset. A special self-timing protocol is used. The BKGD pin receives and transmits serial background debugging.

PDF 68HC12 Datasheet ( Hoja de datos )

Dataaheet of the MC9S12A microcontroller. This page is about: If the interrupt line is held low, the MCU will recognize another interrupt as soon as the interrupt mask bit in the MCU is cleared normally upon return from an interrupt.


XIRQ is often used as a power loss detect.

Pre-coded C-language routines make it easy to access these features. Most datasheets listed on this page may be downloaded as a single 6. The state of these pins during reset determine the MCU operating mode. This pin is always an input and can always be read.

For a brief introduction to the microcontroller used, see the following:. MCU will recognize another interrupt as soon as the interrupt mask bit in. Whenever XIRQ or IRQ are used with multiple interrupt sources IRQ must be configured for level-sensitive operation if there is more than one source of IRQ interrupteach source must drive the interrupt input with an open-drain type of driver to avoid contention between outputs.

If the interrupt line is held low, the. This manual describes the features and operation of the core central processing unit, or CPU, and development support functions used in all HCS12 microcontrollers.

Device Overview and Block Diagram. Because the XIRQ input is level sensitive, it can be connected. Using this Doc Web.