參數(shù)資料
型號(hào)： M38039GCH-XXXKP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 8.4 MHz, MICROCONTROLLER, PQFP64
封裝： 14 X 14 MM, 0.80 MM PITCH, PLASTIC, LQFP-64
文件頁(yè)數(shù)： 73/103頁(yè)
文件大?。?/td> 1412K
代理商： M38039GCH-XXXKP
REJ03B0166-0113 Rev.1.13
Aug 21, 2009
Page 71 of 100
3803 Group (Spec.H QzROM version)
Fig 67. State transitions of system clock
CM4 : Port XC switch bit
0 : I/O port function (stop oscillating)
1 : XCIN-XCOUT oscillating function
CM5 : Main clock (XIN-XOUT) stop bit
0 : Operating
1 : Stopped
CM7, CM6: Main clock division ratio selection bit
b7 b6
00 :
φ = f(XIN)/2 (High-speed mode)
01 :
φ = f(XIN)/8 (Middle-speed mode)
10 :
φ = f(XCIN)/2 (Low-speed mode)
1 1 : Not available
Reset
CM
4
“1
”←→
”0”
C
M
4
“0
”
←
→
”1
”
C
M
6
“1
”
←
→
”0
”
C
M
4
“1
”←
→
”0
”
C
M
6
“1
”←
→
”0
”
CM
7
“1
”←→
”0
”
CM
4
“1
”←→
”0
”
CM
5
“1
”←→
”0
”
CM6
“1”
←→”0”
CM6
“1”
←→”0”
CPU mode register
(CPUM : address 003B16)
b7
b4
C
M
7
“0
”
←
→
”1
”
C
M
6
“1
”
←
→
”0”
High-speed mode
(f(
φ) = 4 MHz)
CM7=0
CM6=0
CM5=0 (8 MHz oscillating)
CM4=0 (32 kHz stopped)
High-speed mode
(f(
φ) = 4 MHz)
CM7=0
CM6=0
CM5=0 (8 MHz oscillating)
CM4=1 (32 kHz oscillating)
Notes1: Switch the mode by the allows shown between the mode blocks. (Do not switch between the modes directly without an allow.)
2: The 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, a delay of approximately 1 ms occurs by connecting prescaler 12 and Timer 1 in middle/high-
speed mode.
5: When the stop mode is ended, a delay of approximately 0.25 s occurs 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 XIN pin and 32 kHz to the XCIN pin.
φ indicates the internal clock.
Middle-speed mode
(f(
φ) = 1 MHz)
CM7=0
CM6=1
CM5=0 (8 MHz oscillating)
CM4=0 (32 kHz stopped)
Middle-speed mode
(f(
φ) = 1 MHz)
CM7=0
CM6=1
CM5=0 (8 MHz oscillating)
CM4=1 (32 kHz oscillating)
Low-speed mode
(f(
φ) = 16 kHz)
CM7=1
CM6=0
CM5=0 (8 MHz oscillating)
CM4=1 (32 kHz oscillating)
Low-speed mode
(f(
φ) = 16 kHz)
CM7=1
CM6=0
CM5=1 (8 MHz stopped)
CM4=1 (32 kHz oscillating)
相關(guān)PDF資料
PDF描述
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