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HT7612 Datasheet(PDF) 2 Page - Holtek Semiconductor Inc |
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HT7612 Datasheet(HTML) 2 Page - Holtek Semiconductor Inc |
2 / 20 page Pin Assignment Pin Description Pin Name I/O Mask Option Description OP1P I PMOS OP1 Non-inverting Input OP1N I PMOS OP1 Inverting Input OP1O O CMOS OP1 Output OP2N I PMOS OP2 Inverting Input OP2O O CMOS OP2 Output VREF O NMOS Reference Voltage DT I PMOS Delay time oscillator input. Connected to an external RC to adjust the output dura- tion. TEST/SC O CMOS TEST and SC share the same pin. TEST is used to test the 32 Khz system frequency. SC is used to detect LVD and CDS. VSS ¾¾ Negative power supply, ground VDD ¾¾ Positive power supply RELAY/LED O CMOS RELAY and LED share the same pin. Active high - a RELAY is driven through an external NPN transistor. BUZ/CDS I/O CMOS BUZ and CDS share the same pin. The BUZ output can drive a piezo buzzer. CDS is connected to a CDS voltage divider for daytime/night auto-detection. A low input to this pin can disable the PIR input. CDS is connected to the input of a internal comparator with a debounce time of 15~20 seconds for the HT7612 and less than 3 seconds for the HT7612B. BUZ/LVD I/O CMOS BUZ and LVD share the same pin. The BUZ output can drive a piezo buzzer LVD is used as an input low voltage detector. ZC I ¾ AC zero crossing detector input. TRIAC O CMOS TRIAC output drive. The output is a pulse output when active. MODE I CMOS Operating mode selection input. VDD: Output is always ON VSS: Output is always OFF Open: Auto detection Test Mode Input. HT7612/HT7612B Rev. 1.50 2 February 21, 2011 H T 7 6 1 2 / H T 7 6 1 2 B 1 6 D I P - A / N S O P - A T E S T / S C Z C B U Z / L V D B U Z / C D S M O D E R E L A Y / L E D T R I A C V D D O P 1 P O P 1 N O P 1 O O P 2 N O P 2 O V R E F D T V S S 1 6 1 5 1 4 1 3 1 2 1 1 1 0 9 1 2 3 4 5 6 7 8 |
Similar Part No. - HT7612_11 |
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Similar Description - HT7612_11 |
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