參數(shù)資料
型號(hào)： M38C2XMX
廠商： Mitsubishi Electric Corporation
英文描述： SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述： 單芯片8位CMOS微機(jī)
文件頁(yè)數(shù)： 10/63頁(yè)
文件大?。?/td> 1000K
代理商： M38C2XMX
10
38C2 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
[CPU Mode Register (CPUM)] 003B
16
The CPU mode register contains the stack page selection bit and
the control bit for the internal system clock.
The CPU mode register is allocated at address 003B
16
.
Fig. 7 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 : RAM in the zero page is used as stack area
1 : RAM in page 1 is used as stack area
Not used (returns
“
1
”
when read)
(Do not write
“
0
”
to this bit.)
Main clock (X
IN
–
X
OUT
) d
ivision ratio selection bits
b5 b4
0 0 : X
IN
/8 (frequency/8 mode)
0 1 : X
IN
/4 (frequency/4 mode)
1 0 : X
IN
/2 (frequency/2 mode)
1 1 : X
IN
(through mode)
System clock control bits
b7 b6
0 0 : X
IN
stop, X
CIN
oscillating, system clock = X
CIN
0 1 : X
IN
oscillating, X
CIN
stop, system clock = X
IN
1 0 : X
IN
oscillating, X
CIN
oscillating, system clock = X
CIN
1 1 : X
IN
oscillating, X
CIN
oscillating, system clock = X
IN
CPU mode register
(CPUM (CM) : address 003B
16
)
b7
b0
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