參數(shù)資料
型號(hào)： M37471M8-XXXSP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP42
封裝： 0.600 INCH, 1.78 MM PITCH, PLASTIC, SDIP-42
文件頁(yè)數(shù)： 27/49頁(yè)
文件大?。?/td> 601K
代理商： M37471M8-XXXSP
30
7470/7471 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
Fig. 25 Block diagram of clock generating circuit
Fig. 26 Structure of CPU mode register
Q
R
S
Q
R
S
Q
R
S
Q
R
S
Q
R
S
XIN
XOUT
1/2
1/8
Reset
STP instruction
Reset
Interrupt disable flag I
Interrupt request
STP
instruction
WIT
instruction
Internal clock
φ
XCIN
1/2
Timer 4
Timer 3
T34M0
T34M1
T34M2
XCOUT
CM6
CM7
(Note 1)
Notes 1 : Refer to Timer 3 of [Figure 6 Block diagram of timer 1 through 4]
2 : 7470 group does not have X CIN input and XCOUT output.
Select gate : At reset, shaded
side is connected
b7
b0
CPU mode register
(Address 00FB16)
These bits must always be set to “0”.
Stack page selection bit (Note 1)
0 : In page 0 area
1 : In page 1 area
Nothing is allocated (The value is undefined at reading)
S50, P51/XCIN, XCOUT selection bit (Note 2)
0 : P50, P51
1 : XCIN, XCOUT
XCOUT drive capacity selection bit (Note 2)
0 : Low
1 : High
Clock (XIN-XOUT) stop bit (Note 2)
0 : Oscillates
1 : Stops
Internal system clock selection bit (Note 2)
0 : XIN-XOUT selected (normal mode)
1 : XCIN-XCOUT selected (low-speed mode)
Notes 1 : In the M37470M2, M37470M4/E4, M37471M2, M37471M4/E4, set this bit to “0”.
2 : In the 7470 group, set this bit to “0”.
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