參數(shù)資料
型號(hào): MC68HC705CT4FN
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 2.048 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 108/152頁
文件大小: 668K
代理商: MC68HC705CT4FN
MC68HC705CT4 Rev. 2.0
General Release Specification
MOTOROLA
16-Bit Timer
59
NON-DISCLOSURE
AGREEMENT
REQUIRED
General Release Specification — MC68HC705CT4
Section 8. 16-Bit Timer
8.1 Contents
8.2 Introduction
The timer consists of a 16-bit, free-running counter driven by a fixed
divide-by-four prescaler. This timer can be used for many purposes,
including input waveform measurements, while simultaneously
generating an output waveform. Pulse widths can vary from several
microseconds to many seconds.
Because the timer has a 16-bit architecture, each specific functional
segment (capability) is represented by two registers. These registers
contain the high and low byte of that functional segment. Access of the
high byte inhibits that specific timer function until the low byte is also
accessed.
NOTE:
The I bit in the CCR should be set while manipulating both the high and
low byte registers of a specific timer function to ensure that an interrupt
does not occur.
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