
ML62Q1000 Series User's Manual
Chapter 6
Clock Generation Circuit
FEUL62Q1000
6-10
6.2.6 Backup Control Register (FBUCON)
FBUCON is a specific function register (SFR) to switch the backup clock.
This register is unavailable on the ML62Q1300 group.
The FBUCON is used only when choosing the low-speed crystal oscillation clock.
The FBUCON is initialized by only the Power-On-Reset.
Address:
0xF00A (FBUCON)
Access:
R/W
Access size: 8 bits
Initial value: 0x00
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Word
-
Byte
-
FBUCON
Bit
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
LOS
CB
R/W
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R/W
Initial
value
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit No.
Bit symbol
name
Description
15 to 1
-
Reserved bit
0
LOSCB
This bit is used to switch the backup clock.
The bit is automatically set to "1" when LOSCM[1:0] bits of Low-speed Clock Mode
Register (FLMOD) is set to 0x01.
Write "1" to this bit to switch the low-speed clock to the low-speed crystal oscillation clock.
In that case, confirm LOSCS bit of Backup Clock Status Register (FBUSTAT) is "0".
0:
Low-speed clock is switched to the low-speed crystal oscillation clock (Initial value)
1:
Low-speed clock is switched to the low-speed RC oscillation clock
[Note]
Ÿ
Operation for writing
"
0
"
to the LOSCB bit is ignored.
Ÿ
Ins
ert two NOP instructions in the next to the instruction of that writes
"
1" to the LOSCB bit, then ensure to confirm
the LOSCB bit is reset to
"
0
"
after that.
Ÿ
When switching to the low speed crystal oscillation clock, ensure to use the interrupt referring to the
Section 6.3.5
"
Switching the Low-speed Clock
"
.
Содержание ML62Q1000 Series
Страница 17: ...Chapter 1 Overview...
Страница 112: ...Chapter 2 CPU and Memory Space...
Страница 154: ...Chapter 3 Reset Function...
Страница 166: ...Chapter 4 Power Management...
Страница 196: ...Chapter 5 Interrupts...
Страница 248: ...Chapter 6 Clock generation Circuit...
Страница 274: ...Chapter 7 Low Speed Time Base Counter...
Страница 291: ...Chapter 8 16 Bit Timer...
Страница 320: ...Chapter 9 Functional Timer FTM...
Страница 382: ...Chapter 10 Watchdog Timer...
Страница 402: ...Chapter 11 Serial Communication Unit...
Страница 456: ...Chapter 12 I2 C Bus Unit...
Страница 491: ...Chapter 13 I2 C Master...
Страница 512: ...Chapter 14 DMA Controller...
Страница 531: ...Chapter 15 Buzzer...
Страница 550: ...Chapter 16 Simplified RTC...
Страница 559: ...Chapter 17 GPIO...
Страница 594: ...Chapter 18 External Interrupt Function...
Страница 612: ...Chapter 19 CRC Generator...
Страница 632: ...Chapter 20 Analog Comparator...
Страница 644: ...Chapter 21 D A Converter...
Страница 655: ...Chapter 22 Voltage Level Supervisor...
Страница 676: ...Chapter 23 Successive Approximation Type A D Converter...
Страница 709: ...Chapter 24 Regulator...
Страница 714: ...Chapter 25 Flash Memory...
Страница 743: ...Chapter 26 Code Option...
Страница 750: ...Chapter 27 LCD Driver...
Страница 788: ...Chapter 28 On Chip Debug Function...
Страница 795: ...Chapter 29 Safety Function...
Страница 813: ...Appendix A...
Страница 881: ...Revision History...