1.5.3 Oscillator Pins (OSC1 and OSC2)

The OSC1 and OSC2 pins are the connections for the on-chip oscillator circuit. (See Section 8. Clock Generator Module (CGM).)

1.5.4 External Reset Pin (RST)

A logic zero on the RST pin forces the MCU to a known start-up state. RST is bidirectional, allowing a reset of the entire system. It is driven low when any internal reset source is asserted. The RST pin contains an internal pullup device. ((See Section 7. System Integration Module

(SIM).)

1.5.5 External Interrupt Pin (IRQ1/VPP)

IRQ1/VPP is an asynchronous external interrupt pin. IRQ1/VPP is also

the OTPROM programming power pin. The IRQ1/VPP pin contain an internal pullup device. (See Section 14. External Interrupt (IRQ).)

1.5.6 USB Data Pins (DPLUS0–DPLUS4 and DMINUS0–DMINUS4)

DPLUS0–DPLUS4 and DMINUS0–DMINUS4 are the differential data lines used by the USB module. (See Section 9. Universal Serial Bus Module (USB).)

1.5.7 Voltage Regulator Out (REGOUT)

REGOUT is the 3.3V output of the on-chip voltage regulator. It is used to supply the voltage for the external pullup resistor required by the USB on either DPLUS or DMINUS lines, depending on type of USB function.

REGOUT is also used internally for the USB data driver and the Phase- locked Loop circuit. The REGOUT pin requires an external bulk capacitor 1∝F or larger and a bypass capacitor. (See Section 9. Universal Serial Bus Module (USB).)

Advance Information

MC68HC(7)08KH12 — Rev. 1.1

 

 

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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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