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HT86A36 Fiches technique(PDF) 50 Page - Holtek Semiconductor Inc |
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HT86A36 Fiches technique(HTML) 50 Page - Holtek Semiconductor Inc |
50 / 68 page HT86Axx/HT86ARxx Rev. 1.10 50 December 12, 2012 Low Voltage Detect Function A low voltage detect function is implemented within the microcontroller. The LVD function is controlled using the LVDC register and configuration options. To enable the LVD function, both the LVD configuration option should be enabled and the LVEN bit should be set high. After setting the LVEN bit high, the circuit requires about 100 ms to stabilise. After this time has elapsed, the LVFG bit can be monitored to look for low voltage conditions. The LVS0 and LVS1 bits are used to define the LVD voltage threshold level, however configuration options can also be used to define this voltage. A configuration option is used to decide whether these two register bits or the configuration option is used to define the LVD voltage threshold level. As the low voltage detector circuitry will consume a certain amount of power, the LVEN bit can be reset to zero to turn off the LVD internal circuitry to reduce power consumption. L V D C R e g i s t e r b 7 b 0 L V E N L V S 1 L V S 0 L V F G L V D v o l t a g e s e l e c t N o t i m p l e m e n t e d , r e a d a s " 0 " L o w V o l t a g e D e t e c t E n a b l e 1 : e n a b l e 0 : d i s a b l e L o w V o l t a g e D e t e c t L e v e l 1 : L B I N p i n v o l t a g e i s l e s s t h a n 0 : L B I N v o l t a g e i s n o t l e s s t h a n N o t i m p l e m e n t e d , r e a s a s " 0 " L V S 1 0 0 1 1 L V S 0 0 1 0 1 L V D V o l t a g e 2 . 2 V 2 . 3 V 2 . 4 V 2 . 5 V Low Voltage Detect Control Register - LVDC L V E N B i t L V D E n a b l e C o n f i g u r a t i o n O p t i o n L V D F u n c t i o n M U X L V S 0 / L V S 1 B i t L V D V o l t a g e L e v e l C o f i g u r a t i o n O p t i o n L V D V o l t a g e L e v e l L V D V o l t a g e L e v e l S o u r c e S e l e c t L V D O n / O f f L V F G LVD Block Diagram |
Numéro de pièce similaire - HT86A36_12 |
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Description similaire - HT86A36_12 |
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