參數資料
型號: M38827G5-XXXHP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP80
封裝: 12 X 12 MM, 0.50 MM PITCH, PLASTIC, LQFP-80
文件頁數: 47/64頁
文件大?。?/td> 619K
代理商: M38827G5-XXXHP
Rev.1.01
Nov 14, 2005
page 49 of 60
REJ03B0089-0101
3882 Group
Fig. 45 State transitions of system clock
CM7, CM6: Main clock division ratio selection bit
b7 b6
0
0 :
φ = f(XIN)/2 ( High-speed mode)
0
1 :
φ = f(XIN)/8 (Middle-speed mode)
1
0 : Not available
1
1 : Not available
Notes
Reset
CM6
“1”
←→“0”
CPU mode register
b7 b6
(CPUM : address 003B16)
CM7=0
CM6=1
Middle-speed mode
(f(
φ)=1 MHz)
CM7=0
CM6=0
High-speed mode
(f(
φ)=4 MHz)
1 : 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 : The example assumes that 8 MHz is being applied to the XIN pin .
φ indicates the internal clock.
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