參數(shù)資料
型號: MC68HC05G3
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 2 MHz, MICROCONTROLLER, PQFP80
封裝: QFP-80
文件頁數(shù): 47/128頁
文件大?。?/td> 290K
代理商: MC68HC05G3
Page 15
Section 1: INTRODUCTION
MOTOROLA
MC68HC05G3 (705G4) Specification Rev. 1.1
1.4.1.9
MISCELLANEOUS REGISTER (MISC)
READ:
anytime
WRITE:
Bits 7-4: no effect
Bits 3-1: anytime (Software must take care of changing these bits.)
Bit 0: anytime
FTUP
OSC Time Up Flag
Power-on detection and clearing FOSCE bit clears this bit. This bit is set by the
overflow of the POD counter. The external reset does not affect this bit.
READ:
0 - during POD or OSC shut down
1 - OSC clock is available for the system clock
STUP
XOSC Time Up Flag
The power-on detection clears this bit. This bit is set after the time base has
counted 8072 clocks. The external reset does not affect this bit.
READ:
0 - XOSC is not stabilized or no connection on XOSC1/2 pins
1 - XOSC clock is available for the system clock
BITS 5-4
Reserved
These bits are not used and always read as zero.
FTUP
$003E
STUP
0
SYS1
SYS0 FOSCE OPTM
MISC
B7
B6
B5
B4
B3
B2
B1
B0
*
000010
RESET:
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