127

9.4.5 USB HUB Address Register (HADDR)

Address:	$0058
	Bit 7	6	5	4	3	2	1	Bit 0
Read:
Read:	USBEN	ADD6	ADD5	ADD4	ADD3	ADD2	ADD1	ADD0
Write:	USBEN	ADD6	ADD5	ADD4	ADD3	ADD2	ADD1	ADD0
Write:

Reset:	0**	0	0	0	0	0	0	0
	0** = Reset by POR only

Figure 9-6. USB HUB Address Register (HADDR)

USBEN — USB Module Enable

This read/write bit enables and disables the USB module. When USBEN is cleared, the USB module will not respond to any tokens and the external regulated output REGOUT will be turned off.

NOTE: **USBEN bit can only be cleared by a POR reset.

1 = USB function enabled

0 = USB function disabled, USB transceiver is also disabled to save power.

ADD6-ADD0 — USB H UB Function Address

These bits specify the address of the HUB function. Reset clears these bits.

MC68HC(7)08KH12 — Rev. 1.1	Advance Information

Freescale Semiconductor	127

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.

Freescale Semiconductor MC68HC08KH12 manual USB HUB Address Register Haddr, 127

Models: MC68HC08KH12

9.4.5 USB HUB Address Register (HADDR)

Figure 9-6. USB HUB Address Register (HADDR)

MC68HC08KH12 specifications