参数资料
型号: M38227ECHP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PQFP80
封装: 12 X 12 MM, 0.50 MM PITCH, PLASTIC, QFP-80
文件页数: 42/82页
文件大小: 1168K
代理商: M38227ECHP
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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