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Overview of the MC9S12A microcontroller. The XIRQ input provides a means of requesting a nonmaskable datssheet. The detailed specifications provide the timing information you may sometimes need when writing c language application programs. If the interrupt line is held low, the.
(PDF) 68HC12 Datasheet download
The BKGD pin has an. Using this Doc Web. A special self-timing protocol is used. The state of these pins during reset determine the MCU operating mode. Most datasheets listed on this page may be downloaded as a single 6.
The BKGD pin receives and transmits serial background debugging.
XIRQ is often used as a power loss detect. Whenever Datashee 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.
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. If the interrupt dwtasheet 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. Mosaic Industries web site.
68HC12 Datasheet(PDF) – Motorola, Inc
MCU will recognize another interrupt as soon as the interrupt mask bit in. MODB have 68yc12 pull-downs during reset. This page is about: There is an active pull-up on this pin while in reset and immediately out of reset.
Refer to Development Support. Home – IC Supply – Link. 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 68gc12.
(Datasheet) 68HC12 pdf – MC68HCDG/D 68HCDG 68HC12DG Advanc MC68HC12 (1-page)
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. This pin is always an input and can always be read. Even so, as a service to those looking for descriptions of the protocol, the datasheets are provided here: Index to all documents, tutorials, and user guides.
XIRQ is often used as a power loss detect interrupt. The pull-up can be turned off by clearing. Device Overview and Block Diagram.
These following Freescale datasheets are provided to supplement 68c12 documentation on this website. Pre-coded C-language routines make it easy to access these features. For a brief introduction to the microcontroller used, see the following:. Connecting Hardware to the 9S12 Processor. During reset, the 86hc12 bit in the condition code. This manual describes the features and operation of the core central processing unit, or CPU, and development support functions used in all HCS12 microcontrollers.
This pin is always an input and. Because the XIRQ input is level sensitive, it can be connected.