
ML62Q1000 Series User's Manual
Chapter 4 Power Management
FEUL62Q1000
4-22
4.3.3 HALT-H Mode
In the HALT-H mode, HSCLK is forcibly stopped, the CPU stops, and only peripheral circuits remain in operation. Note
that the peripheral circuits in operation with the HSCLK stop operating in the HALT-H mode. See "4.1.7 Operation of
Each Function in Standby Mode" for operation of each function in the HALT-H mode.
When "1" is written in the HLTH bit of the SBYCON register, the operating state enters the HALT-H mode.
When a WDT interrupt or an interrupt enabled in registers IE0 to IE7 occurs, the HALT-H mode is released at the rising
edge of the next SYSTEMCLK, HSCLK is forcibly enabled, and the mode shifts back to the program run mode with the
SYSTEMCLK in the HSCLK state.
Even if the high-speed oscillation is disabled (ENOSC="0") and the low-speed clock (LSCLK) is selected
(SELSCLK="0") before entering the HALT-H mode, the high-speed oscillation is forcibly enabled (ENOSC="1") when
the HALT-H mode is released and the HSCLK is chosen for the SELSCLK (SELSCLK="1").
Figure 4-3 shows operation waveforms in the HALT-H mode.
Figure 4-3 Operation Waveforms in HALT-H Mode
Interrupt
SBYCON.HLTH
Program run mode (high
speed)
SYSTEMCLK
CPUCLK
HALT-H mode
Program run mode (high speed)
FCON.ENOSC
SBYCON : Standby control part register
FCON : Frequency control register
T
RTCPU
: CPU clock restoring time (see Table 4-5)
HSCLK stops
T
RTCPU
Summary of Contents for ML62Q1000 Series
Page 17: ...Chapter 1 Overview...
Page 112: ...Chapter 2 CPU and Memory Space...
Page 154: ...Chapter 3 Reset Function...
Page 166: ...Chapter 4 Power Management...
Page 196: ...Chapter 5 Interrupts...
Page 248: ...Chapter 6 Clock generation Circuit...
Page 274: ...Chapter 7 Low Speed Time Base Counter...
Page 291: ...Chapter 8 16 Bit Timer...
Page 320: ...Chapter 9 Functional Timer FTM...
Page 382: ...Chapter 10 Watchdog Timer...
Page 402: ...Chapter 11 Serial Communication Unit...
Page 456: ...Chapter 12 I2 C Bus Unit...
Page 491: ...Chapter 13 I2 C Master...
Page 512: ...Chapter 14 DMA Controller...
Page 531: ...Chapter 15 Buzzer...
Page 550: ...Chapter 16 Simplified RTC...
Page 559: ...Chapter 17 GPIO...
Page 594: ...Chapter 18 External Interrupt Function...
Page 612: ...Chapter 19 CRC Generator...
Page 632: ...Chapter 20 Analog Comparator...
Page 644: ...Chapter 21 D A Converter...
Page 655: ...Chapter 22 Voltage Level Supervisor...
Page 676: ...Chapter 23 Successive Approximation Type A D Converter...
Page 709: ...Chapter 24 Regulator...
Page 714: ...Chapter 25 Flash Memory...
Page 743: ...Chapter 26 Code Option...
Page 750: ...Chapter 27 LCD Driver...
Page 788: ...Chapter 28 On Chip Debug Function...
Page 795: ...Chapter 29 Safety Function...
Page 813: ...Appendix A...
Page 881: ...Revision History...