TXD0F — Embedded Device Endpo int 0 Data Transmit Flag

This read only bit is set after the data stored in embedded device Endpoint 0 transmit buffers has been sent and an ACK handshake packet from the host is received. Once the next set of data is ready in the transmit buffers, software must clear this flag by writing a logic 1 to the TXD0FR bit. To enable the next data packet transmission, TX0E must also be set. If TXD0F bit is not cleared, a NAK handshake will be returned in the next IN transaction. Reset clears this bit. Writing to TXD0F has no effect.

1 = Transmit on embedded device Endpoint 0 has occurred

0 = Transmit on embedded device Endpoint 0 has not occurred

RXD0F — Embedded Device End point 0 Data Receive Flag

This read only bit is set after the USB embedded device module has received a data packet and responded with an ACK handshake packet. Software must clear this flag by writing a logic 1 to the RXD0FR bit after all of the received data has been read. Software must also set RX0E bit to one to enable the next data packet reception. If RXD0F bit is not cleared, a NAK handshake will be returned in the next OUT transaction.

Reset clears this bit. Writing to RXD0F has no effect.

1 = Receive on embedded device Endpoint 0 has occurred

0 = Receive on embedded device Endpoint 0 has not occurred

TXD0IE — Embedded Device Endpoint 0 Transmit Interrupt Enable

This read/write bit enables the Transmit Embedded Device Endpoint 0 to generate CPU interrupt requests when the TXD0F bit becomes set. Reset clears the TXD0IE bit.

1 = Transmit Embedded Device Endpoint 0 can generate a CPU interrupt request

0 = Transmit Embedded Device Endpoint 0 cannot generate a CPU interrupt request

RXD0IE — Embedded Device Endpoin t 0 Receive Interrupt Enable

This read/write bit enables the Receive Embedded Device Endpoint 0 to generate CPU interrupt requests when the RXD0F bit becomes set. Reset clears the RXD0IE bit.

MC68HC(7)08KH12 — Rev. 1.1

Advance Information

 

 

Freescale Semiconductor

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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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