參數(shù)資料
型號: MC68HC05CT4FN
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.048 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 8/142頁
文件大?。?/td> 624K
代理商: MC68HC05CT4FN
MC68HC05CT4 Rev. 2.0
General Release Specification
MOTOROLA
Miscellaneous Register
105
NON-DISCLOSURE
AGREEMENT
REQUIRED
General Release Specification — MC68HC05CT4
Section 14. Miscellaneous Register
14.1 Contents
14.2 Introduction
The miscellaneous register exists to hold various system control bits. It
is located at address $0021.
14.3 Miscellaneous Control Register
SPEED — CPU Speed Select
This control bit, when set, selects an additional divide-by-eight after
the already divide-by-five from the oscillator clock to the internal bus
clock. This makes the internal CPU clock a divide-by-40 from the
oscillator input.
When clear, the internal bus clock is a divide-by-five from the
oscillator input. Reset clears this bit.
Address:
$0021
Bit 7
654321
Bit 0
Read:
0000
SPEED
COE
PWME
0
Write:
Reset:
00000000
Figure 14-1. Miscellaneous Control Register (MISCR)
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