ML63611 User’s Manual
Chapter 15 Power Supply Circuit (POWER)
15 – 2
OPTION B (D): 1.5 V (3.0 V), With regulator
circuit for LCD bias
OPTION A (C): 1.5 V (3.0 V), Without regulator
circuit for LCD bias
15.2
Power Supply Circuit Related Register
The halver control register (VHCON) is used to control the power supply circuit.
•
Halver control register (VHCON)
VHCON is a 4-bit special function register (SFR) that specifies whether the output voltage of the halver circuit
is used or whether the battery voltage is used as the voltage supplied to the internal different voltage regulator
circuits.
This register is available in the OPTION C and OPTION D (but not in the OPTION A and OPTION B, where
the halver circuit cannot be used).
VH
Halver circuit control
0: Halver circuit OFF
1: Halver circuit ON (initial state)
VHCON (095H)
(R/W)
bit 3
bit 2
bit 1
bit 0
bit 0: VH
At system reset, VH is set to “1”. At this time, the halver circuit enters an operating state and
the output voltage (half the battery voltage) of the halver circuit will be supplied to the internal
different voltage regulator circuits.
When VH is set to “0”, the halver circuit stops operating and the battery voltage will be supplied
to the internal different voltage regulator circuits.
Содержание ML63611
Страница 9: ...Chapter 1 Overview...
Страница 33: ...Chapter 2 CPU and Memory Spaces...
Страница 42: ...Chapter 3 CPU Control Functions...
Страница 49: ...Chapter 4 Interrupt INT...
Страница 62: ...Chapter 5 Clock Generator Circuit OSC...
Страница 71: ...Chapter 6 Time Base Counter TBC...
Страница 75: ...Chapter 7 Timers TIMER...
Страница 99: ...Chapter 8 100 Hz Timer Counter 100HzTC...
Страница 103: ...Chapter 9 Watchdog Timer WDT...
Страница 108: ...Chapter 10 Ports INPUT I O PORT...
Страница 140: ...Chapter 11 Melody Driver MELODY...
Страница 152: ...Chapter 12 Serial Port SIO...
Страница 179: ...Chapter 13 LCD Driver LCD...
Страница 200: ...Chapter 14 Battery Low Detect Circuit BLD...
Страница 204: ...Chapter 15 Power Supply Circuit POWER...
Страница 215: ...Chapter 16 A D Converter ADC...
Страница 238: ...Appendixes...
Страница 271: ...ML63611 User s Manual First Edition May 2001 Second Edition June 2001 2001 Oki Electric Industry Co Ltd PEUL63611 02...