參數(shù)資料
型號: MC68HC05E0FN
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQCC68
封裝: PLASTIC, LCC-68
文件頁數(shù): 31/96頁
文件大小: 890K
代理商: MC68HC05E0FN
4
MC68HC05E0
MOTOROLA
4-1
RESETS, INTERRUPTS AND LOW POWER MODES
4
RESETS, INTERRUPTS
AND LOW POWER MODES
4.1
Resets
The MCU can be reset by the initial power-on reset function or by an active low level applied to the
RESET pin (see Figure 4-1).
Figure 4-1 Power-on Reset and RESET
VDD
RESET
7FFF
7FFE
New
7FFF
7FFE
PC
OSC1
New
PC
Internal
processor clock
7FFE
Op
code
New
PCL
New
PCH
tVDDR
Op
code
New
PCL
New
PCH
address bus
Internal
data bus
tOXOV
tCYC
tPORL
7FFE
Program
execution
begins
Program
execution
begins
tRL(or tDOGL)
(Internal power-on reset)
(External hardware reset)
VDD threshold (1-2V typical)
Reset sequence
37
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