參數(shù)資料
型號: M38C12M4-XXXHP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP64
封裝: 10 X 10 MM, PLASTIC, LQFP-64
文件頁數(shù): 35/59頁
文件大?。?/td> 955K
代理商: M38C12M4-XXXHP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
38C1 Group
40
Fig. 42 Clock generating circuit block diagram
S
R
Q
XIN-XOUT
oscillation stop bit
CPUM BIT5
XIN
XOUT
XCOUT
XCIN
Port Xc switch bit
CPUM BIT4
“0”
“1”
Main clock
selection bit
CPUM BIT3
Ring oscillator
1/2
1/4
1/2
Main clock division
ratio selection bit
CPUM BIT6
Main clock
selection bit
CPUM BIT3
S
R
Q
Timer 1
S
R
Q
WIT instruction
Timing
φ
(Internal clock)
STP instruction
Interrupt request
Reset
Timer 1 count
source selection bit
T123M BIT 5
Internal system
clock selection bit
CPUM BIT7
Note: When Xc oscillation is selected for internal system clock, set the port Xc switch bit to “1”.
Interrupt disable flag I
STP instruction
Internal system clock
selection bit (Note)
CPUM BIT7
“0”
“1”
“1”“0”
“1”
“0”
“1”
“0”
“1”
“0”
“1”
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