14.4.1

IRQ1/VPP Pin

215

14.5 IRQ Module During Break Interrupts . . . . . . . . . . . . . . . . . . . 217

14.6 IRQ Status and Control Register (ISCR) . . . . . . . . . . . . . . . . 217

Section 15. Keyboard Interrupt Module (KBI)

15.1 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219

15.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220

15.3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220

15.4 Port-D Keyboard Interrupt Block Diagram . . . . . . . . . . . . . . . 222 15.4.1 Port-D Keyboard Interrupt Functional Description. . . . . . . 223 15.4.2 Port-D Keyboard Initialization . . . . . . . . . . . . . . . . . . . . . . 224 15.4.3 Port-D Keyboard Interrupt Registers . . . . . . . . . . . . . . . . . 225 15.4.3.1 Port-D Keyboard Status and Control Register: . . . . . . . 225 15.4.3.2 Port-D Keyboard Interrupt Enable Register . . . . . . . . . . 226

15.5 Port-E Keyboard Interrupt Block Diagram . . . . . . . . . . . . . . . 228 15.5.1 Port-E Keyboard Interrupt Functional Description. . . . . . . 229 15.5.2 Port-E Keyboard Initialization . . . . . . . . . . . . . . . . . . . . . . 230 15.5.3 Port-E Keyboard Interrupt Registers . . . . . . . . . . . . . . . . . 231 15.5.3.1 Port-E Keyboard Status and Control Register . . . . . . . . 231 15.5.3.2 Port-E Keyboard Interrupt Enable Register . . . . . . . . . . 232

15.6 Port-F Keyboard Interrupt Block Diagram. . . . . . . . . . . . . . . . 234 15.6.1 Port-F Keyboard Interrupt Functional Description . . . . . . . 235 15.6.2 Port-F Keyboard Initialization . . . . . . . . . . . . . . . . . . . . . . 236 15.6.3 Port-F Keyboard Interrupt Registers . . . . . . . . . . . . . . . . . 237 15.6.3.1 Port-F Keyboard Status and Control Register . . . . . . . . 237 15.6.3.2 Port-F Keyboard Interrupt Enable Register . . . . . . . . . . 238 15.6.3.3 Port-FPull-up Enable Register . . . . . . . . . . . . . . . . . . . 239

15.7 Wait Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239

15.8 Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239

15.9 Keyboard Module During Break Interrupts . . . . . . . . . . . . . . . 239

MC68HC(7)08KH12 — Rev. 1.1

Advance Information

 

 

Freescale Semiconductor

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Freescale Semiconductor MC68HC08KH12 manual Keyboard Interrupt Module KBI
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MC68HC08KH12 specifications

The Freescale Semiconductor MC68HC08KH12 is a versatile microcontroller that has gained popularity in various embedded systems applications. Part of the HC08 family, this microcontroller combines a robust architecture with comprehensive on-chip features, making it suitable for a wide range of applications ranging from industrial control to consumer electronics.

One of the main features of the MC68HC08KH12 is its 8-bit architecture, which provides an optimal balance between performance and power efficiency. It operates at clock speeds of up to 2 MHz, allowing for efficient execution of instructions while maintaining low power consumption. The microcontroller is designed to operate over a voltage range of 2.7 to 5.5 volts, making it adaptable to various system requirements.

The MC68HC08KH12 is equipped with 1 Kbyte of RAM and 12 Kbytes of ROM, which allows for substantial program and data storage. The on-chip memory helps reduce the need for external components, simplifying the design of embedded systems and enhancing reliability. With a wide range of I/O options, including 26 general-purpose I/O pins, the microcontroller provides flexibility in interfacing with sensors, actuators, and other devices.

In terms of technologies, the MC68HC08KH12 features an advanced instruction set that enhances programming efficiency. It supports basic arithmetic operations, bit manipulation, and control transfer instructions, making it suitable for a variety of computational tasks. The integrated timers, analog-to-digital converters, and serial communication interfaces, including UART, provide the necessary tools for real-time control and data exchange with peripheral devices.

Another characteristic of the MC68HC08KH12 is its low power mode capabilities, which allow it to enter a sleep state during periods of inactivity. This feature is essential in battery-powered applications, where minimizing power consumption is crucial for extending operational life.

Overall, the Freescale Semiconductor MC68HC08KH12 stands out as a reliable microcontroller that combines performance, flexibility, and power efficiency. Its extensive features and technologies enable engineers to design robust embedded systems that meet the demands of modern applications. As a result, the MC68HC08KH12 remains a valuable choice for developers seeking a highly functional yet cost-effective microcontroller solution.
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