ML610Q111/ML610Q112 User’s Manual
Chapter 6 Clock Generation Circuit
FEUL610Q111
6-3
6.2.2 Frequency Control Register 0 (FCON0)
Address: 0F002H
Access: R/W
Access size: 8/16 bits
Initial value: 3BH
7
6
5
4
3
2
1
0
FCON0
OUTC1
OUTC0
OSCM1
OSCM0
SYSC1
SYSC0
R/W
R/W
R/W
R
R/W
R/W
R/W
Initial value
0
0
1
1
1
0
1
1
FCON0 is a special function register (SFR) to control the high-speed clock generation circuit and to select system clock.
OSCM1 always returns the value “1”.
[Description of Bits]
•
SYSC1, SYSC0
(bits 1, 0)
The SYSC1 and SYSC0 bits are used to select the frequency of the high-speed clock (HSCLK) used for system clock and
peripheral circuits (including high-speed time base counter). OSCLK, 1/2OSCLK, 1/4OSCLK, or 1/8OSCLK can be
selected. The maximum operating frequency guaranteed for the system clock (SYSCLK) of this LSI is 8.192MHz.
At system reset, 1/8OSCLK is selected.
SYSC1
SYSC0
Description
0
0
OSCLK
0
1
1/2OSCLK
1
0
1/4OSCLK
1
1
1/8OSCLK (initial value)
•
OSCM0
(bits 2)
The OSCM0 bit is used to select the mode of the high-speed clock generation circuit. PLL oscillation mode, or external
clock input mode can be selected.
The setting of OSCM0 can be changed only when high-speed oscillation is being stopped (ENOSC bit of FCON1 is “0”).
At system reset, PLL oscillation mode is selected.
OSCM0
Description
0
Built-in PLL oscillation mode (initial value)
1
External clock input mode (PA2,PB6/CLKIN)
•
OUTC1, OUTC0
(bits 5, 4)
The OUTC1 and OUTC0 bits are used to select the frequency of the high-speed output clock which is output when the
tertiary function of PA0 pin, PB0 pin are used.
OSCLK, 1/2OSCLK, 1/4OSCLK, or 1/8OSCLK can be selected.
At system reset, 1/8OSCLK is selected.
OUTC1
OUTC0
Description
0
0
OSCLK
0
1
1/2 OSCLK
1
0
1/4 OSCLK
1
1
1/8 OSCLK (initial value)
Note
:
−
To switch the mode of the high-speed clock generation circuit using the OSCM0 bit, stop the high-speed oscillation and
set the system clock to the low-speed clock (set the ENOSC bit and SYSCLK of FCON1 to “0”).
−
In external clock mode, an external clock is input from the PA2/CLKIN, PB6/CLKIN pin. And in external clock mode, input
a clock that does not exceed 8.192 MHz.
−
In external clock mode, when using PA2/CLKIN and PB6/CLKIN as external clock input pin, PA2/CLKIN has the higher
priority.
Содержание ML610Q111
Страница 1: ...ML610Q111 ML610Q112 User s Manual Issue Date Nov 16 2016 FEUL610Q111 05 ...
Страница 14: ...Chapter 1 Overview ...
Страница 26: ...Chapter 2 CPU and Memory Space ...
Страница 34: ...Chapter 3 Reset Function ...
Страница 38: ...Chapter 4 MCU Control Function ...
Страница 53: ...Chapter 5 Interrupts INTs ...
Страница 81: ...Chapter 6 Clock Generation Circuit ...
Страница 95: ...Chapter 7 Time Base Counter ...
Страница 103: ...Chapter 8 Timers ...
Страница 145: ...Chapter 9 Watchdog Timer ...
Страница 153: ...Chapter 10 PWM ...
Страница 199: ...Chapter 11 Synchronous Serial Port ...
Страница 212: ...Chapter 12 UART ...
Страница 240: ...Chapter 13 I2 C Bus Interface Master ...
Страница 254: ...Chapter 14 I2 C Bus Interface Slave ...
Страница 269: ...Chapter 15 Port A ...
Страница 279: ...Chapter 16 Port B ...
Страница 291: ...Chapter 17 Port C ...
Страница 303: ...Chapter 18 Port D ...
Страница 312: ...Chapter 19 Port AB Interrupts ...
Страница 317: ...Chapter 20 Successive Approximation Type A D Converter ...
Страница 335: ...Chapter 21 Voltage Level Supervisor ...
Страница 342: ...Chapter 22 Analog Comparator ...
Страница 353: ...Chapter 23 Data Flash Memory ...
Страница 373: ...Chapter 24 On chip Debug ...
Страница 375: ...Appendixes ...
Страница 393: ...Appendix E ...
Страница 398: ...Revision History ...