参数资料
型号: M38259EFFP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PQFP100
封装: 14 X 20 MM, 0.65 MM PITCH, PLASTIC, QFP-100
文件页数: 9/73页
文件大小: 1323K
代理商: M38259EFFP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
3825 Group
14
[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. 10 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 (XINXOUT) 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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