ML620Q503/Q504 User's Manual
Chapter 6 Clock Generation Circuit
FEUL620Q504
6–12
6.3 Description of Operation
6.3.1 Low-Speed Clock
6.3.1.1
Low-Speed Built-In RC Oscillation Mode
Figure 6-3 shows the low-speed clock generation circuit configuration in the built-in RC oscillation mode.
When the RC oscillation clock is counted to 128, the low-speed oscillation clock (LSCLK) starts to be supplied.
Figure 6-3 Circuit Configuration in the low-speed Built-in RC Oscillation Mode
6.3.1.2
Low-Speed Crystal Oscillation Mode
Figure 6-4 shows the low-speed clock generation circuit configuration in the crystal oscillation mode.
The low-speed clock generation circuit is provided with an external 32.768 kHz crystal. To match the oscillation
frequency by using a trimmer capacitor, connect external capacitors (C
GL
and C
DL
) as required.
Figure 6-4 Circuit Configuration of the Crystal Oscillation Mode
[Note]
•Install the crystal oscillator near LSI as much as possible, and do not place a signal and power supply wiring
that it becomes a noise source near the crystal oscillator and the wiring.
•The impedance between XT1 and XT0 might decrease by moisture uptake of circuit board in high moisture
environment and condensation on the circuit board, and then the oscillation trouble may occur. Please make
moisture measures such as coating the circuit board when used in such environments. The oscillation stop
might be caused due to condensation.
STOP mode
LSCLK(low-speed oscillation clock)
V
DDL
RC oscillator
circuits
128 counts
PXT0
V
SS
C
DL
C
GL
32.768kHz
Crystal oscillator
PXT1
V
DDL
STOP mode
Low-speed
clock (LSCLK)
R
F
Control circuits
8192 counts
Содержание LAPIS SEMICONDUCTOR ML620Q503
Страница 2: ...ML620Q503 Q504 User s Manual Issue Date Apr 16 2015 FEUL620Q504 01...
Страница 18: ...Chapter 1 Overview...
Страница 32: ...Chapter 2 CPU and Memory Space...
Страница 44: ...Chapter 3 Reset Function...
Страница 50: ...Chapter 4 Power Management...
Страница 70: ...Chapter 5 Interrupts...
Страница 134: ...Chapter 6 Clock Generation Circuit...
Страница 161: ...Chapter 7 Time Base Counter...
Страница 170: ...Chapter 8 Timers...
Страница 183: ...Chapter 9 Function Timer FTM...
Страница 231: ...Chapter 10 Watchdog Timer...
Страница 239: ...Chapter 11 Synchronous Serial Port SSIO...
Страница 251: ...Chapter 12 Synchronous Serial Port with FIFO SSIOF...
Страница 283: ...Chapter 13 UART...
Страница 303: ...Chapter 14 UART with FIFO UARTF...
Страница 327: ...Chapter 15 I2 C Bus Interface...
Страница 344: ...Chapter 16 Port XT...
Страница 350: ...Chapter 17 Port 0...
Страница 361: ...Chapter 18 Port 1...
Страница 368: ...Chapter 19 Port2...
Страница 379: ...Chapter 20 Port 3...
Страница 395: ...Chapter 21 Port 4...
Страница 410: ...Chapter 22 Port 5...
Страница 426: ...Chapter 23 Melody Driver...
Страница 439: ...Chapter 24 RC Oscillation type A D Converter RC ADC...
Страница 462: ...Chapter 25 Successive Approximation Type A D Converter SA ADC...
Страница 479: ...Chapter 26 Analog Comparator...
Страница 489: ...Chapter 27 Flash Memory Control...
Страница 505: ...Chapter 28 Voltage Level Supervisor VLS...
Страница 517: ...Chapter 29 LLD circuit...
Страница 519: ...Chapter 30 On Chip Debug Function...
Страница 522: ...Appendixes...
Страница 552: ...Revision History...