
ML62Q1000 Series User's Manual
Chapter 6
Clock Generation Circuit
FEUL62Q1000
6-20
Figure 6-8 shows the operation waveforms when a reset occurs after the start of the low-speed crystal clock.
The low-speed crystal oscillation circuit is not reset by anything but the power-on reset.
See Chapter 3 "Reset Function" for details of resetting.
Figure 6-8 Low-speed Crystal Clock Generation Circuit Operation (Reset Operation After Start of Low-speed Crystal)
6.3.1.3
Low-speed External Clock Input
The clock can be input to the XT1 pin for the low-speed crystal oscillation circuit.
This circuit is unavailable on the ML62Q1300 group.
A low-speed external clock can be chosen in the low-speed clock mode register (FLMOD).
When choosing the low-speed external clock for a low-speed clock, the XT1 pin forcibly becomes Hi-Z output.
The low-speed external clock operates in the same manner as when the low-speed crystal oscillation circuit is chosen.
RC oscillation waveform
Low-speed RC
oscillation
waveform
Clock backup
interrupt
(CBUINT)
Power supply
V
DD
POR
LOSCS
LOSCB
T
RCL
: RC oscillation start time
512 counts (approx. 16 ms)
CPU operation start
RC oscillation
waveform
SFR setting
Crystal oscillation waveform
8192 counts (approx. 250 ms)
Crystal oscillation waveform
Write "1"
CBUINT does not occur at this timing
Reset other
than POR
CPU operation start
512 counts (approx. 16 ms)
RTC operable
(power-on reset)
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...