參數(shù)資料
型號(hào): MC68HC05X4CDW
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: HCMOS Microcontroller Unit
中文描述: 8-BIT, MROM, 2.2 MHz, MICROCONTROLLER, PDSO28
封裝: PLASTIC, SOIC-28
文件頁數(shù): 47/156頁
文件大小: 926K
代理商: MC68HC05X4CDW
MC68HC05X4 Rev 1.0
MOTOROLA
Resets, Interrupts and Low Power Modes
For More Information On This Product,
Go to: www.freescale.com
47
Resets, Interrupts and Low Power Modes
General Description
Contents
Resets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Power-on reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
RESET pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
Illegal address reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
Computer operating properly (COP) reset . . . . . . . . . . . . . . . . . . .49
Resets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Non-maskable software interrupt (SWI) . . . . . . . . . . . . . . . . . . . . .50
Maskable hardware interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
MCAN interrupt (CIRQ). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Hardware controlled interrupt sequence. . . . . . . . . . . . . . . . . . . . .52
Low power modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
STOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
WAIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Data retention mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
Resets
The MCU can be reset in four ways: by the initial power-on reset
function, by an active low input to the RESET pin, by an opcode fetch
from an illegal address, and by a COP watchdog timer reset. See
Figure 1
, below.
1-resets
F
Freescale Semiconductor, Inc.
n
.
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