參數(shù)資料
型號: M34518M4-XXXFP
元件分類: 微控制器/微處理器
英文描述: 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PQFP32
封裝: 7 X 7 MM, 0.80 MM PITCH, PLASTIC, LQFP-32
文件頁數(shù): 148/157頁
文件大?。?/td> 1783K
代理商: M34518M4-XXXFP
ML610Q411/ML610Q412/ML610Q415 User’s Manual
Chapter 6
Clock Generation Circuit
6 – 5
6.2.3
Frequency Control Register 1 (FCON1)
Address: 0F003H
Access: R/W
Access size: 8 bits
Initial value: 03H
7
6
5
4
3
2
1
0
FCON1
ENMLT
ENOSC
SYSCLK
R/W
R
R/W
Initial value
0
1
FCON1 is a special function register (SFR) to control the high-speed clock generation circuit and to select system
clock.
[Description of Bits]
SYSCLK (bit 0)
The SYSCLK bit is used to select system clock.
It allows selection of the low-speed clock (LSCLK) or HSCLK
(1/nOSCLK: n = 1, 2, 4, 8) selected by using the high-speed clock frequency select bit (SYSC1, 0) of FCON0.
When the oscillation of high-speed clock is stopped (ENOSC bit = “0”), the SYSCLK bit is fixed to “0” and the
low-speed clock (LSCLK) is selected for system clock.
The system clock is fixed to HSCLK and this bit always returns “1” when reading on ML610Q415.
SYSCLK
Description
0
LSCLK
1
HSCLK (initial value)
ENOSC (bit 1)
The ENOSC bit is used to select enable/disable of the oscillation of the high-speed clock oscillator.
The oscillation of high-speed clock is always enable exept for STOP mode and this bit always returns “1” when
reading on ML610Q415.
ENOSC
Description
0
Disables high-speed oscillation
1
Enables high-speed oscillation (initial value)
ENMLT (bit 2)
The ENMLT bit is used to select enable/disable of the operation of the 2
× low-speed clock (LSCLK×2).
ENMLT
Description
0
Disables 2
× low-speed clock operation (initial value)
1
Enables 2
× low-speed clock operation
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