參數(shù)資料
型號: MC68HLC705KJ1
廠商: 飛思卡爾半導(dǎo)體(中國)有限公司
英文描述: Computer Operation Properly Module
中文描述: 電腦操作正確模塊
文件頁數(shù): 71/108頁
文件大?。?/td> 718K
代理商: MC68HLC705KJ1
MC68HC705KJ1 MC68HRC705KJ1 MC68HLC705KJ1 Data Sheet, Rev. 4.1
Freescale Semiconductor
71
Chapter 8
Resets and Interrupts
8.1 Introduction
Reset initializes the MCU by returning the program counter to a known address and by forcing control and
status bits to known states.
Interrupts temporarily change the sequence of program execution to respond to events that occur during
processing.
8.2 Resets
A reset immediately stops the operation of the instruction being executed, initializes certain control and
status bits, and loads the program counter with a user-defined reset vector address. The following
sources can generate a reset:
Power-on reset (POR) circuit
RESET pin
Computer operating properly (COP) watchdog
Illegal address
Figure 8-1. Reset Sources
D
Q
CK
S
RESET
LATCH
INTERNAL CLOCK
RST
TO CPU AND
PERIPHERAL
MODULES
RESET PIN
V
DD
ILLEGAL ADDRESS
COP WATCHDOG
POWER-ON RESET
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