At the core of the 68HC12 is CPU12, a high-speed bit evolution of the on our 68HC16 and microcontrollers replaces conventional debug modes. Chapter topics cover an introduction to the 68HC12, 68HC12 assembly language programming, 68HC12 Microcontroller: Theory and Applications, Volume 1. Block diagram of the HCS12 9S12 microcontroller showing its timing and 9S12 , HCS12, 68HC12, 68HCS12, MC9S12A, MC9S12DP, Freescale 16 Bit.

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Freescale 68HC12

Several major auto manufacturers are either currently using CAN networks in 68h1c2 vehicles or are developing them for future vehicles. HC12 and S12 Daniel J.

From inside the book. The system is based on a free-running, bit counter with a programmable prescaler, overflow interrupt, and separate function interrupts. Plus, the development environment’s user-friendly interface and feature set help maximize designer productivity while minimizing time-to-market. My library Help Advanced Book Search. PackSteven Frank Barrett Snippet view – This integrated non-volatile memory solution enables: Multiple timer channels Each channel configurable for either input capture or output compare functions Real-time periodic interrupts Computer Operating Properly COP watchdog protection against software failures Pulse accumulator for external event counting or gated time accumulation An optional PWM offering up to four channels and up to bit PWM outputs Optional event counter system for advanced timing operations Analog-to-Digital Converter ADC The ADC periodically samples external analog signals and produces corresponding digital values.

Typical applications of the BDLC module are in automobiles where multiple BDLC MCUs can communicate over a single or dual wire bus, eliminating the weight and bulk of wire harnesses and adding diagnostic capability.


Devices operate from 3.

Freescale 68HC12 – Wikipedia

It also allows FLASH re-programmability in the field for diagnostics and upgrades of customer end products. PackSteven Frank Barrett.

Prentice Hall- Computers – pages. This innovative, bit wide memory subsystem offers many benefits, including: Low-power operation is achieved imcrocontroller Account Options Sign in. Microcontroller Theory and Applications: Theory and ApplicationsSteven Frank Barrett. In addition, CAN is becoming very popular for use in factory-floor automation-type industrial networks.

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Implementation of CAN version 2 parts A and B Standard bit and extended bit data frames 0 to 8 bytes data length Programmable bit rate up to 1 Mbps Support for remote frames Double buffered receive Triple buffered transmit with internal prioritization using a “local priority” concept Flexible maskable identifier filter supports alternatively two full size extended identifier filter, four bit filters, or eight 8-bit filters Programmable wakeup functionality with integrated low-pass filter Programmable loopback mode supports self-test Separate signaling and interrupt capabilities for all CAN receiver and transmitter error states warning, error passive, bus-off Programmable MSCAN clock source either the CPU bus clock or the crystal oscillator output Low-power sleep mode SAE J Byte Data Link Control Module BDLC-D The BDLC-D is an advanced serial communication multiplex bus controller operating according to the SAE J Class B protocol.

In addition, fast termination is assured with single-cycle access speed, and an optional 1 to 2 Kbytes of protected boot block is available. This enhanced, patented version of the Background Debug Mode found on our 68HC16 and microcontrollers replaces conventional debug modes. Additional features and benefits include: The MCUez toolset is designed to leverage the speed and efficient memory utilization provided by assembly language with a smart linker.


Typical applications are measuring analog inputs like battery voltage, temperature, pressure, and fluid levels. Storage of calibration information Self-adjusting or self-adapting systems Data logging for historical or secure data Jump tables and code patches High Performance Timer The 68HC12 timer provides flexibility, performance, and ease of use. Chapter topics cover an introduction to the 68HC12, 68HC12 assembly The SCI can be used for communications between the microcontroller and a terminal, a computer, or in network of microcontrollers.

This book provides readers with fundamental assembly language programming skills, an understanding of the functional hardware components of a microcontroller, and skills to interface a variety of external devices with microcontrollers.

Bundled with Motorola development hardware, the MCUez development toolset includes a configuration shell, assembler, linker, and debugger. SAE J compatible Theory and ApplicationsVolume 1 Daniel J.

Some EVBs can also accommodate various types and configurations of external memory to suit a particular application’s requirements. Theory and ApplicationsVolume 1. Other editions – View all Microcontroller Theory and Applications: Additional M68HC12 timer features include: The 68HC12 microcomtroller supports all internal registers, instructions, addressing modes, and operating modes of the 68HC When used with compatible debug software such as Microconrtoller, the SDI allows users to view and modify applications on the fly – reducing development time and speeding time to market.

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