参数资料
型号: M38073E4FS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, UVPROM, 4 MHz, MICROCONTROLLER, CQCC80
封装: 0.80 MM PITCH, CERAMIC, LCC-80
文件页数: 50/77页
文件大小: 1126K
代理商: M38073E4FS
51
3807 Group
MITSUBISHI MICROCOMPUTERS
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Fig. 57. System clock generating circuit block diagram (Single-chip mode)
WIT instruction
STP instruction
Timing
φ (internal clock)
S
R
Q
STP instruction
S
R
Q
Main clock stop bit
S
R
Q
1/2
1/4
XIN
XOUT
XCOUT
XCIN
Interrupt request
Reset
Interrupt disable flag l
1/2
Port XC
switch bit
"1"
"0"
"10"
"01"
Timer 1 count source
selection bits
Low-speed mode
High-speed or
middle-speed
mode
Middle-speed mode
High-speed or
low-speed mode
Main clock division ratio
selection bits (note)
Note: Either high-speed, middle-speed or low-speed mode is selected by bits 7 and 6 of CPU mode register.
When low-speed mode is selected, set port Xc switch bit (b4) to “1”.
"1"
"0"
Timer 1
Timer 2
Timer 2 count source
selection bit
"00"
Main clock division ratio
selection bits (note)
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