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): 81/142頁
文件大小: 624K
代理商: MC68HC05CT4FN
MC68HC05CT4 Rev. 2.0
General Release Specification
MOTOROLA
Resets
43
NON-DISCLOSURE
AGREEMENT
REQUIRED
General Release Specification — MC68HC05CT4
Section 5. Resets
5.1 Contents
5.2 Introduction
The MCU can be reset from four sources: one external input and three
internal restart conditions. The RESET pin is an input with a Schmitt
trigger as shown in Figure 5-1. All the internal peripheral modules will be
reset by the internal reset signal (RST). Refer to Figure 5-2 for reset
timing detail.
5.3 External Reset (RESET)
The RESET pin is the only external source of a reset. This pin is
connected to a Schmitt trigger input gate to provide an upper and lower
threshold voltage separated by a minimum amount of hysteresis. This
external reset occurs whenever the RESET pin is pulled below the lower
threshold and remains in reset until the RESET pin rises above the
upper threshold. This active-low input will generate the RST signal and
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