19. Low Voltage Detection Circuit (VLTD)
The low voltage detection circuit generates a reset signal by detecting a decreasing voltage.
Note:
Due to the fluctuation of supply voltage, the voltage detection circuit may not operate properly. Users should
give due consideration based on the electrical characteristic in the device designing.
19.1 Structure
The low voltage detection circuit consists of a reference voltage generation circuit, a detection voltage level selec-
tion circuit, a comparator and control registers.
The supply voltage is divided by the ladder resistor and input to the detection voltage selection circuit. The detec-
tion voltage selection circuit selects a voltage according to the specified detection voltage (4.1 ± 0.2V), and the com-
parator compares it with the reference voltage. When the supply voltage becomes lower than the detection voltage
(4.1 ± 0.2V), a voltage detection reset signal is generated.
-
+
VDCR
VDEN
to POR circuit
4.1V±0.2V
Voltage detection reset
Reference voltage
generation circuit
Detection voltage level selection circuit
DVDD
Figure 19-1 Voltage Detection Circuit)
TMPM3V6/M3V4
Page 417
2019-02-06
Содержание TMPM3V4
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Страница 178: ...TMPM3V6 M3V4 9 Input Output port 9 2 Block Diagrams of Ports Page 156 2019 02 06 ...
Страница 206: ...TMPM3V6 M3V4 10 16 bit Timer Event Counters TMRB 10 7 Applications using the Capture Function Page 184 2019 02 06 ...
Страница 232: ...TMPM3V6 M3V4 11 Universal Asynchronous Receiver Transmitter Circuit UART 11 4 Operation Description Page 210 2019 02 06 ...
Страница 354: ...TMPM3V6 M3V4 14 Synchronous Serial Port SSP 14 6 Frame Format Page 332 2019 02 06 ...
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Страница 420: ...TMPM3V6 M3V4 16 Analog Digital Converter ADC 16 6 Timing chart of AD conversion Page 398 2019 02 06 ...
Страница 462: ...TMPM3V6 M3V4 21 Watchdog Timer WDT 21 5 Control register Page 440 2019 02 06 ...
Страница 510: ...TMPM3V6 M3V4 22 Flash Memory Operation 22 4 Programming in the User Boot Mode Page 488 2019 02 06 ...
Страница 538: ...TMPM3V6 M3V4 25 Electrical Characteristics 25 7 Recommended Oscillation Circuit Page 516 2019 02 06 ...
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