258

17.15.3 Acquisition/Lock Time Specifications

Description	Symbol	Min	Typ	Max			Notes

Filter Capacitor Multiply Factor	CFACT	—	0.0145	—		F/s V
Acquisition Mode Time Factor	KACQ	—	0.117	—	V
Tracking Mode Time Factor	KTRK	—	0.021	—	V
Manual Mode Time to Stable	tACQ	—	8 ⋅ VDDA	—	If C		F chosen correctly
Manual Mode Time to Stable	tACQ	—	-----------------------------	—	If C		F chosen correctly
			fRDV ⋅ KACQ
Manual Stable to Lock Time	tAL	—	4 ⋅ VDDA	—	If C		F chosen correctly
Manual Stable to Lock Time	tAL	—	-----------------------------	—	If C		F chosen correctly
			fRDV ⋅ KTRX
Manual Acquisition Time	tLOCK	—	t ACQ + tAL	—
Tracking Mode Entry Frequency	∆TRK	0	—	± 3.6%
Tolerance	∆TRK	0	—	± 3.6%
Acquisition Mode Entry Frequency	∆ACQ	± 6.3%	—	± 7.2%
Tolerance	∆ACQ	± 6.3%	—	± 7.2%
LOCK Entry Frequency Tolerance	∆LOCK	0	—	± 0.9%
LOCK Exit Frequency Tolerance	∆UNL	± 0.9%	—	± 1.8%
Reference Cycles Per Acquisition	nACQ		32	—
Mode Measurement	nACQ		32	—
Reference Cycles Per Tracking	nTRK		128	—
Mode Measurement	nTRK		128	—
Automatic Mode Time to Stable	tACQ	nACQ/fRDV	8 ⋅ VDDA	—		If C F chosen correctly
Automatic Mode Time to Stable	tACQ	nACQ/fRDV	-----------------------------	—		If C F chosen correctly
			fRDV ⋅ KACQ
Automatic Stable to Lock Time	tAL	nTRK/fRDV	4 ⋅ VDDA	—		If C F chosen correctly
Automatic Stable to Lock Time	tAL	nTRK/fRDV	-----------------------------	—		If C F chosen correctly
			fRDV ⋅ KTRX
Automatic Lock Time	tLOCK	—	t ACQ + tAL	—

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

258	Freescale Semiconductor

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 Acquisition/Lock Time Specifications, 258

Models: MC68HC08KH12

17.15.3 Acquisition/Lock Time Specifications

Description

Symbol

Min

Typ

Max

MC68HC08KH12 specifications