參數(shù)資料
型號: M38B57
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): 58/69頁
文件大?。?/td> 1011K
代理商: M38B57
MITSUBISHI MICROCOMPUTERS
38B5 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
58
PRELIMINARY
Notice: This s not a final specification.
Some parametric imits are subject to change.
Fig. 70 Clock Generating Circuit Block Diagram
WIT instruction
STP instruction
Timing
φ
(internal clock)
S
R
Q
STP instruction
S
R
Q
Main clock stop bit
(
Note 3
)
S
R
Q
1/4
X
IN
X
OUT
X
COUT
X
CIN
Interrupt request
Reset
Interrupt disable flag l
1/2
1/2
Port X
switch bit (
Note 3
)
“1”
“0”
“1”
Timer 1 count source
selection bit (
Note 2
)
Low-speed mode
“1”
High-speed or
middle-speed
mode
Middle-speed mode
“1”
High-speed or
low-speed mode
Internal system clock
selection bit (
Notes 1, 3
)
“1”
“0”
Timer 1
Timer 2
Timer 2 count source
selection bit (
Note 2
)
“0”
Main clock division ratio
selection bits (
Note 3
)
“0”
“0”
Notes 1:
When low-speed mode is selected, set the port Xc switch bit (b4) to “1.”
2:
Refer to the structure of the timer 12 mode register.
3:
Refer to the structure of the CPU mode register.
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