參數資料
型號： M38259EFHP
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
文件頁數： 41/70頁
文件大?。?/td> 607K
代理商： M38259EFHP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
3825 Group
41
Fig. 42 State transitions of internal clock
φ
Notes 1 :
Switch the mode by the allows shown between the mode blocks. (Do not switch between the mode directly without an allow.)
2 :
The all modes can be switched to the stop mode or the wait mode and returned to the source mode when the stop mode or the wait
mode is ended.
3 :
Timer and LCD operate in the wait mode.
4 :
When the stop mode is ended, a delay of approximately 1 ms occurs automatically by timer 1 and timer 2 in middle-/high-speed mode.
5 :
When the stop mode is ended, a delay of approximately 0.25 s occurs automatically by timer 1 and timer 2 in low-speed mode.
6 :
Wait until oscillation stabilizes after oscillating the main clock X
IN
before the switching from the low-speed mode to middle-/high-
speed mode.
7 :
The example assumes that 8 MHz is being applied to the X
IN
pin and 32 kHz to the X
CIN
pin.
φ
indicates the internal clock.
CM
4
: Port Xc switch bit
0: I/O port
1: X
CIN
, X
COUT
CM
5
: Main clock (X
IN
–X
OUT
) stop bit
0: Oscillating
1: Stopped
CM
6
: Main clock division ratio selection bit
0: f(X
IN
)/2 (high-speed mode)
1: f(X
IN
)/8 (middle-speed mode)
CM
7
: Internal system clock selection bit
0: X
IN
–X
OUT
selected
(middle-/high-speed mode)
1: X
CIN
–X
COUT
selected
(low-speed mode)
CPU mode register
(CPUM : address 003B
16
)
b7
b4
Reset
CM
6
“1”
“0”
C
4
“
“
CM
7
=0(8 MHz selected)
CM
6
=1(Middle-speed)
CM
5
=0(8 MHz oscillating)
CM
4
=0(32 kHz stopped)
Middle-speed mode
(f(
φ
) =1 MHz)
CM
7
=0(8 MHz selected)
CM
6
=1(Middle-speed)
CM
5
=0(8 MHz oscillating)
CM
4
=1(32 kHz oscillating)
Middle-speed mode
(f(
φ
) =1 MHz)
CM
7
=0(8 MHz selected)
CM
6
=0(High-speed)
CM
5
=0(8 MHz oscillating)
CM
4
=0(32 kHz stopped)
High-speed mode
(f(
φ
) =4 MHz)
CM
7
=0(8 MHz selected)
CM
6
=0(High-speed)
CM
5
=0(8 MHz oscillating)
CM
4
=1(32 kHz oscillating)
High-speed mode
(f(
φ
) =4 MHz)
CM
7
=1(32 kHz selected)
CM
6
=1(Middle-speed)
CM
5
=0(8 MHz oscillating)
CM
4
=1(32 kHz oscillating)
Low-speed mode
(f(
φ
) =16 kHz)
CM
7
=1(32 kHz selected)
CM
6
=0(High-speed)
CM
5
=0(8 MHz oscillating)
CM
4
=1(32 kHz oscillating)
Low-speed mode
(f(
φ
) =16 kHz)
CM
7
=1(32 kHz selected)
CM
6
=1(Middle-speed)
CM
5
=1(8 MHz stopped)
CM
4
=1(32 kHz oscillating)
Low-speed mode
(f(
φ
) =16 kHz)
CM
7
=1(32 kHz selected)
CM
6
=0(High-speed)
CM
5
=1(8 MHz stopped)
CM
4
=1(32 kHz oscillating)
Low-speed mode
(f(
φ
) =16 kHz)
CM
6
“1”
“0”
CM
6
“1”
“0”
CM
6
“1”
“0”
C
4
“
“
C
7
“
“
C
7
“
“
C
5
“
“
C
5
“
“
CM
4
“1
CM
6
“1
“0
“0
CM
4
CM
6
“0
“1
“1
“0
CM
5
“1
CM
6
“1
“0
“0
CM
5
CM
6
“0
“1
“1
“0
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