參數(shù)資料
型號(hào): M38221E1FS
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)
文件頁數(shù): 39/78頁
文件大小: 998K
代理商: M38221E1FS
44
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
3822 Group
MITSUBISHI MICROCOMPUTERS
Fig.44 Clock generating circuit block diagram
WIT
instruction
STP instruction
Timing
φ
(Internal system clock)
S
R
Q
STP instruction
S
R
Q
Main clock stop bit
S
R
Q
Timer 2
Timer 1
1/2
1/4
XIN
XOUT
XCOUT
XCIN
Interrupt request
Reset
Port XC switch bit
“1”“0”
Timer 1 count
source selection
bit
Timer 2 count
source selection
bit
Low-speed mode
Middle-/High-speed mode
Internal system clock selection bit
(Note)
Middle-speed mode
High-speed mode
or Low-speed mode
Note : When using the low-speed mode, set the port XC switch bit to “1” .
Main clock division ratio selection bit
“1”
“0”
“1”
“0”
“1”
“0”
Interrupt disable flag I
1/2
“1”
“0”
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