
ML610Q421/ML610Q422/ML610421 User’s Manual
Chapter 4 MCU Control Function
4 – 13
4.3.3.2
STOP Mode When CPU Operates with High-Speed Clock
When the CPU is operating with a high-speed clock and the STP bit of SBYCON is set to “1” with the stop code
acceptor enabled, the STOP mode is entered and high-speed oscillation and low-speed oscillation stop.
When the NMI interrupt request or the interrupt-enabled (the interrupt enable flag is “1”) P00 to P03 interrupt request is
issued, the STP bit is set to “0” and the low-speed and high-speed oscillation restart.
When an interrupt request is issued, the STOP mode is released after the elapse of the high-speed oscillation start time
(TXTH/TRC) and the high-speed clock (OSCLK) oscillation stabilization time (8192-pulse count), the mode is returned
to the program run mode, and the high-speed clocks (OSCLK and HSCLK) restart supply to the peripheral circuits.
The low-speed clock (LSCLK) restarts supply to the peripheral circuits after the elapse of the low-speed oscillation start
time (TXTL) and low-speed clock (LSCLK) oscillation settling time (8192 count).
For the high-speed oscillation start time (TXTH) and low-speed oscillation start time (TXTL), see the “Electrical
Characteristics” Section in Appendix C.
Figure 4-4 shows the operation waveforms in STOP mode when CPU operates with the high-speed clock.
Figure 4-4 Operation Waveforms in STOP Mode When CPU Operates with High-Speed Clock
Note:
The STOP mode is entered two cycles after the instruction that sets the STP bit to “1” and up to two instructions are
executed during the period between STOP mode release and a transition to interrupt processing. Therefore, place two
NOP instructions next to the instruction that set the STP bit to “1”.
Low-speed oscillation
waveform
Low-speed oscillation waveform
SYSCLK
High-speed oscillation waveform
High-speed oscillation waveform
High-speed oscillation
waveform
SBYCON.STP bit
LSCLK
OSCLK and HSCLK waveforms
OSCLK and HSCLK waveforms
OSCLK, HSCLK
Program operating mode
STOP mode
Program operating mode
Interrupt request
T
XTL
High-speed oscillation
8192-pulse count
HSCLK waveform
T
XTH
/T
RC
HSCLK waveform
8192-pulse count
Hiz
Содержание ML610421
Страница 1: ...ML610Q421 ML610Q422 ML610421 User s Manual Issue Date Feb 9 2015 FEUL610Q421 06...
Страница 15: ...Chapter 1 Overview...
Страница 44: ...Chapter 2 CPU and Memory Space...
Страница 49: ...Chapter 3 Reset Function...
Страница 53: ...Chapter 4 MCU Control Function...
Страница 69: ...Chapter 5 Interrupts INTs...
Страница 93: ...Chapter 6 Clock Generation Circuit...
Страница 110: ...Chapter 7 Time Base Counter...
Страница 121: ...Chapter 8 Capture...
Страница 129: ...Chapter 9 1 kHz Timer 1kHzTM...
Страница 135: ...Chapter 10 Timers...
Страница 160: ...Chapter 11 PWM...
Страница 172: ...Chapter 12 Watchdog Timer...
Страница 180: ...Chapter 13 Synchronous Serial Port...
Страница 195: ...Chapter 14 UART...
Страница 216: ...Chapter 15 I2 C Bus Interface...
Страница 231: ...Chapter 16 NMI Pin...
Страница 237: ...Chapter 17 Port 0...
Страница 246: ...Chapter 18 Port 1...
Страница 252: ...Chapter 19 Port 2...
Страница 259: ...Chapter 20 Port 3...
Страница 270: ...Chapter 21 Port 4...
Страница 282: ...Chapter 22 Port A...
Страница 290: ...Chapter 23 Melody Driver...
Страница 304: ...Chapter 24 RC Oscillation Type A D Converter...
Страница 327: ...Chapter 25 Successive Approximation Type A D Converter...
Страница 338: ...Chapter 26 LCD Drivers...
Страница 371: ...Chapter 27 Battery Level Detector...
Страница 378: ...Chapter 28 Power Supply Circuit...
Страница 381: ...Chapter 29 On Chip Debug Function...
Страница 384: ...Appendixes...
Страница 435: ...Revision History...