參數(shù)資料
型號: MC68HC805P18MDWR2
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, EEPROM, MICROCONTROLLER, PDSO28
封裝: SOIC-28
文件頁數(shù): 89/144頁
文件大?。?/td> 1348K
代理商: MC68HC805P18MDWR2
MC68HC(8)05P18 — Rev. 2.0
Advance Information
MOTOROLA
Resets
49
Advance Information — MC68HC05P18/MC68HC805P18
Section 5. Resets
5.1 Contents
5.2 Introduction
The MCU can be reset from four sources: one external input and three
internal reset conditions. The RESET pin is an input with a Schmitt
trigger as shown in Figure 5-1. The CPU and all peripheral modules will
be reset by the RST signal which is the logical OR of internal reset
functions and is clocked by PH2.
5.3 External Reset (RESET)
The RESET input is the only external reset and is connected to an
internal Schmitt trigger. The external reset occurs whenever the RESET
input is driven below the lower threshold and remains in reset until the
RESET pin rises above the upper threshold. The upper and lower
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