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参数资料
| 型号： | M38748EAF-XXXFS |
| 厂商： | Mitsubishi Electric Corporation |
| 英文描述： | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| 中文描述： | 单芯片8位CMOS微机 |
| 文件页数： | 64/92页 |
| 文件大小： | 1292K |
| 代理商： | M38748EAF-XXXFS |
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64
3874 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
Fig. 71 State transitions of system clock
“0
“1
Reset
Notes 1:
Switch the mode by the arrows shown between the mode blocks. (Do not switch between the modes directly without an arrow.)
2:
All modes can be switched to the stop mode or the wait mode and return to the source mode when the stop mode or the wait mode is
ended.
3:
Timer operates in the wait mode.
4:
When the stop mode is ended, wait time is generated automatically by connecting timer 1 and timer 2.
5:
The example assumes that 6.3 MHz is being applied to the X
IN
pin and 32 kHz to the X
CIN
pin.
φ
indicates the internal clock.
6:
We recommend that X
COUT
drivability selection bit is set to “1” (high) because reliance of oscillation stability is improved.
High-speed mode
(
φ
=3.15 MHz)
CM
7
=0 High-speed mode
CM
6
=0 6.3 MHz selected
CM
5
=0 (X
IN
oscillating)
CM
4
=0 (32 kHz stopped)
CM
3
=1 (X
drivability
High)
Middle-speed mode
(
φ
=788 kHz)
CM
7
=0 Middle-speed mode
CM
6
=1 6.3 MHz selected
CM
5
=0 (X
IN
oscillating)
CM
4
=0 (32 kHz stopped)
CM
3
=1 (X
COUT
drivability
High)
Double-speed mode
(
φ
=6.3 MHz)
CM
7
=1 Double-speed mode
CM
6
=1 6.3 MHz selected
CM
5
=0 (X
IN
oscillating)
CM
4
=0 (32 kHz stopped)
CM
3
=1 (X
drivability
High)
Middle-speed mode
(
φ
=788 kHz)
CM
7
=0 Middle-speed mode
CM
6
=1 6.3 MHz selected
CM
5
=0 (X
IN
oscillating)
CM
4
=1 (32 kHz oscillating)
CM
3
=1 (X
COUT
drivability
High)
Double-speed mode
(
φ
=6.3 MHz)
CM
7
=1 Double-speed mode
CM
6
=1 6.3 MHz selected
CM
5
=0 (X
IN
oscillating)
CM
4
=1 (32 kHz oscillating)
CM
3
=1 (X
COUT
drivability
High)
High-speed mode
(
φ
=3.15 MHz)
CM
7
=0 High-speed mode
CM
6
=0 6.3 MHz selected
CM
5
=0 (X
IN
oscillating)
CM
4
=1 (32 kHz oscillating)
CM
3
=1 (X
drivability
High)
Low-speed mode (
φ
=16 kHz)
CM
7
=1 Low-speed mode
CM
6
=0 32 kHz selected
CM
5
=0 (X
IN
oscillating)
CM
4
=1 (32 kHz oscillating)
CM
3
=0 (X
COUT
drivability
Low)
Low-speed mode (
φ
=16 kHz)
CM
7
=1 Low-speed mode
CM
6
=0 32 kHz selected
CM
5
=0 (X
IN
oscillating)
CM
4
=1 (32 kHz oscillating)
CM
3
=1 (X
COUT
drivability
High)
Low-speed mode (
φ
=16 kHz)
CM
7
=1 Low consumption
mode
CM
6
=0 32 kHz selected
CM
5
=1 (X
IN
stopped)
CM
4
=1 (32 kHz oscillating)
CM
3
=0 (X
COUT
drivability
Low)
CM
3
: X
COUT
drivability selection bit
0 : Low
1 : High
CM
4
: Port Xc switch bit
0 : I/O port function
1 : X
CIN
-X
COUT
oscillating function
CM
5
: Main clock (X
IN
- X
OUT
) stop bit
0 : Oscillating
1 : Stopped
CM
7
,CM
6
: Main clock division ratio selection bits
CM
7
CM
6
0 0 :
φ
=f(X
IN
)/2 (high-speed mode)
0 1 :
φ
=f(X
IN
)/8 (middle-speed mode)
1 0 :
φ
=f(X
CIN
)/2 (low-speed mode)
1 1 :
φ
=f(X
IN
) (double-speed mode)
CPU mode register
(CPUM: address 003B
16
)
CM
3
“0
“1
“0
←→
“1
CM
5
“1
“0
3
“0”
←→
“1”
CM
6
“0
←
“1
“
←
“
C
7
“
←
“
“0”
←→
“1”
CM
7
“0”
←→
“1”
6
CM
7
“0”
←→
“1”
CM
6
“0”
←→
“1”
“
←
“
C
7
“
←
“
7
“0
←→
“1
“0
“1
CM
7
“1
“0
“0
“1
“1
←→
“0
CM
7
“0
“1
7
4
“0
←→
“1
C
4
“
←
“
C
4
“
←
“
C
4
“
←
“
CM
7
“0”
←→
“1”
CM
6
“0”
←→
“1”
“0”
←→
“1”
CM
7
“0”
←→
“1”
CM
6
4
“1
“0
CM
0
“0
“1
“0
“1
6
4
“0
←→
“1
b7 b0
C
6
C
3
CM
6
CM
3
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相关代理商/技术参数 |
参数描述 |
|---|---|
| M38748EAF-XXXGP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38748EAT-XXXFS | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38748EAT-XXXGP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38748EBD-XXXFS | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38748EBD-XXXGP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
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