參數(shù)資料
型號: MC68HC05RC8DW
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
封裝: SOIC-28
文件頁數(shù): 65/122頁
文件大小: 2962K
代理商: MC68HC05RC8DW
MC68HC05RC16
Rev.
3.0
General
Release
Specification
MOTOROLA
Resets
47
Resets
External
Reset
(RESET)
Figure 5-2. Reset and POR Timing Diagram
PCH
PCL
OSC12
RESET5
INTERNAL
PROCESSOR
INTERNAL
ADDRESS
BUS1
3FFE
3FFF
V
DD
4064 t
CYC
t
CYC
t
RL
INTERNAL
DATA
BUS1
3FFE
NEW PC
3FFF
NOTES:
1. Internal timing signal and bus information are not available externally.
2. OSC1 line is not meant to represent frequency. It is only used to represent time.
3. The next rising edge of the internal processor clock following the rising edge of RESET initiates the reset sequence.
4. VDD must fall to a level lower than VPOR to be recognized as a power-on reset.
5. The LPRST pin resets the CPU like RESET. However, 4064 POR cycles are executed first, before the reset vector address appears on the
internal address bus. (See 5.4 Low-Power External Reset (LPRST).)
3
NEW
OP
CODE
PCL
PCH
NEW PC
OP
CODE
NEW PC
CLOCK1
0 V
> VPOR 4
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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