參數(shù)資料
型號: MC68HC05CT4FN
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.048 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 137/142頁
文件大小: 624K
代理商: MC68HC05CT4FN
NON-DISCLOSURE
AGREEMENT
REQUIRED
Pulse Width Modulator (PWM)
General Release Specification
MC68HC05CT4 Rev. 2.0
94
Pulse Width Modulator (PWM)
MOTOROLA
12.2 Introduction
The pulse width modulator (PWM) system has one 6-bit channel to
enable the correct pulse output. The PWM has a fixed frequency of E/64,
where E is the internal bus frequency. For a PWM output frequency of
32 kHz, E must be 2.048 MHz. This corresponds to a 10.24-MHz crystal
with the divide-by-five crystal option.
Figure 12-1. PWM Block Diagram
BUFFER
MODULUS &
COMPARATOR
6-BIT COUNTER
PWM
PIN LOGIC
PC7/PWM
E
MISCELLANEOUS CONTROL REGISTER
DATA
BUS
PWME
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