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参数资料
| 型号： | M38267E8GP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PQFP100 |
| 封装： | 14 X 14 MM, 0.50 MM PITCH, PLASTIC, LQFP-100 |
| 文件页数： | 53/82页 |
| 文件大小： | 1377K |
| 代理商： | M38267E8GP |
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SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
3826 Group
54
Fig. 58 State transitions of system clock
Notes 1: Switch the mode by the arrows shown between the mode blocks. (Do not switch between the mode directly without an arrow.)
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 time can be set by timer 1 and timer 2 in middle-/high-speed mode.
5: When the stop mode is ended, a delay time in low-speed mode can be set as well.
6: Wait until oscillation stabilizes after oscillating the main clock XIN 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 XIN pin and 32 kHz to the XCIN pin.
φ indicates the internal clock.
CM4 : Xc switch bit
0: Oscillation stop
1: XCIN, XCOUT
CM5 : Main clock (XIN–XOUT) stop bit
0: Oscillating
1: Stopped
CM6 : Main clock division ratio selection bit
0: f(XIN)/2 (high-speed mode)
1: f(XIN)/8 (middle-speed mode)
CM7 : Internal system clock selection bit
0: XIN–XOUT selected
(middle-/high-speed mode)
1: XCIN–XCOUT selected
(low-speed mode)
CPU mode register
(CPUM : address 003B16)
b7
b4
Reset
CM7 = 0 (8 MHz selected)
CM6 = 1 (Middle-speed)
CM5 = 0 (XIN oscillating)
Middle-speed mode
(
φ = 1 MHz)
CM7 = 0 (8 MHz selected)
CM6 = 0 (High-speed)
CM5 = 0 (XIN oscillating)
High-speed mode
(
φ = 4 MHz)
CM7 = 1 (32 kHz selected)
CM6 = 1 (Middle-speed)
CM5 = 0 (XIN oscillating)
Low-speed mode
(
φ =16 kHz)
CM7 = 1 (32 kHz selected)
CM6 = 0 (High-speed)
CM5 = 0 (XIN oscillating)
Low-speed mode
(
φ =16 kHz)
CM7 = 1 (32 kHz selected)
CM6 = 1 (Middle-speed)
CM5 = 1 (XIN stopped)
Low-speed mode
(
φ = 16 kHz)
CM7 = 1 (32 kHz selected)
CM6 = 0 (High-speed)
CM5 = 1 (XIN stopped)
Low-speed mode
(
φ =16 kHz)
CM6
“0”
“1”
CM6
“0”
“1”
CM6
“0”
“1”
C
M
7
“0
”
“1
”
C
M
7
“0
”
“1
”
C
M
5
“0
”
“1
”
C
M
5
“0
”
“1
”
C
M
5
C
M
6
“0
”
“1
”
“0
”
“1
”
C
M
5
C
M
6
“0
”
“1
”
“1
”
“0
”
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