參數(shù)資料
型號: M34518M4-XXXSP
元件分類: 微控制器/微處理器
英文描述: 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDIP32
封裝: 0.400 INCH, 1.78 MM PITCH, PLASTIC, SDIP-32
文件頁數(shù): 157/157頁
文件大?。?/td> 1783K
代理商: M34518M4-XXXSP
ML610Q411/ML610Q412/ML610Q415 User’s Manual
Chapter 6
Clock Generation Circuit
6 – 14
Figure 6-9
Flow of System Clock Switching Processing (LSCLK
→HSCLK)
Note:
The function switching HSCLK to LSCLK is not available on ML610Q415.
If the system clock is switched from a low-speed clock to a high-speed clock before the high-speed clock
(HSCLK) starts oscillation, the CPU becomes inactive until HSCLK starts clock supply to the peripheral circuits.
Voltage detection by
BLD
Yes
No
500kHz RC osciilation mode can not be used.
Remain using the low-speed clock (LSCLK).
VDD
≥ 1.3V?
TWAIT = 500 s @500 kHz RC oscillation mode
TWAIT = 1 ms @External clock input mode
Set high-speed oscillation mode before switching the system clock.
Start of high-speed oscillation
System clock switching (Low-speed clock
→High-speed clock)
Yes
No
Use
500 kHz RC ?
When using 500kHz RC oscillation mode or 500kHz
external clock mode, check that VDD is 1.3V or
higher by using BLD.
System clock switching
Wait until oscillation
stabilizes (TWAIT)
ENOSC
←”1”
SYSCLK
←”1”
High-speed operation
mode
Remain using the low-speed clock (LSCLK).
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