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ML610471/472/473/Q471/Q472/Q473 User's Manual
Chapter 6 Clock Generation Circuit
6-5
6.3 Description of Operation
6.3.1 Low-Speed Clock
6.3.1.1 Low-Speed Clock Generation Circuit
Figure 6-2 shows the circuit configuration of the low-speed clock generation circuit.
For the low-speed clock generation circuit, externally provide a 32.768kHz crystal oscillator and capacitors (C
GL
and
C
DL
).
In the STOP mode, the XT0 and XT1 pins become Hiz (high-impedance).
When the ENMLT bit of FCON1 is set to “1”, the low-speed double clock (LSCLK x 2) starts operation.
Figure 6-2 Circuit Configuration of 32.768 kHz Crystal Oscillation Mode
Note:
Install a crystal as close to the LSI as possible and make sure that signals causing noise and power supply wiring are
not near the crystal and its wiring.
Note that oscillation may stop due to condensation.
XT0
V
SS
C
DL
C
GL
32.768kHz
crystal
oscillator
XT1
V
DDL
STOP mode
Low-speed clock
(LSCLK)
R
F
2
×
clock
circuit
Low-speed double clock
(LSCLK x 2)
ENMLT
Control circuit
Содержание ML610472
Страница 12: ...Chapter 1 Overview...
Страница 38: ...Chapter 2 CPU and Memory Space...
Страница 44: ...Chapter 3 Reset Function...
Страница 48: ...Chapter 4 MCU Control Function...
Страница 62: ...Chapter 5 Interrupts...
Страница 82: ...Chapter 6 Clock Generation Circuit...
Страница 94: ...Chapter 7 Time Base Counter...
Страница 105: ...Chapter 8 Capture...
Страница 114: ...Chapter 9 Timer...
Страница 133: ...Chapter 10 Watchdog Timer...
Страница 141: ...Chapter 11 UART...
Страница 164: ...Chapter 12 Port 0...
Страница 173: ...Chapter 13 Port 2...
Страница 180: ...Chapter 14 Port 3...
Страница 188: ...Chapter 15 Port 4...
Страница 199: ...Chapter 16 Port 6...
Страница 205: ...Chapter 17 RC Oscillation Type A D Converter...
Страница 225: ...Chapter 18 LCD Drivers...
Страница 243: ...Chapter 19 Power Supply Circuit...
Страница 245: ...Chapter 20 uEASE Flash Writer System...
Страница 249: ...Chapter 21 Software Development...
Страница 258: ...Appendixes...
Страница 280: ...Revision History...