參數(shù)資料
型號(hào)： M38222M2-XXXFP
元件分類(lèi)： 微控制器/微處理器
英文描述： 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP80
封裝： 14 X 20 MM, 0.80 MM PITCH, PLASTIC, QFP-80
文件頁(yè)數(shù)： 9/82頁(yè)
文件大小： 1168K
代理商： M38222M2-XXXFP
14
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
3822 Group
MITSUBISHI MICROCOMPUTERS
[CPU Mode Register (CPUM)] 003B16
The CPU mode register contains the stack page selection bit and
the internal system clock selection bit.
The CPU mode register is allocated at address 003B16.
Fig. 11 Structure of CPU mode register
Not available
Processor mode bits
b1 b0
0
0 : Single-chip mode
0
1 :
1
0 :
1
1 :
Stack page selection bit
0 : 0 page
1 : 1 page
Not used (returns “1” when read)
(Do not write “0” to this bit)
Port XC switch bit
0 : I/O port function (stop oscillating)
1 : XCIN–XCOUT oscillating function
Main clock (XIN–XOUT) stop bit
0 : Oscillating
1 : Stopped
Main clock division ratio selection bit
0 : f(XIN)/2 (high-speed mode)
1 : f(XIN)/8 (middle-speed mode)
Internal system clock selection bit
0 : XIN–XOUT selected (middle-/high-speed mode)
1 : XCIN–XCOUT selected (low-speed mode)
CPU mode register
(CPUM (CM) : address 003B16)
b7
b0
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