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ISL12027IB30AZ-T Folha de dados(PDF) 3 Page - Intersil Corporation |
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ISL12027IB30AZ-T Folha de dados(HTML) 3 Page - Intersil Corporation |
3 / 28 page 3 FN8232.4 October 18, 2006 Pin Descriptions PIN NUMBER SYMBOL BRIEF DESCRIPTION SOIC TSSOP 1 3 X1 The X1 pin is the input of an inverting amplifier and is intended to be connected to one pin of an external 32.768kHz quartz crystal. X1 can also be driven directly from a 32.768kHz source. 2 4 X2 The X2 pin is the output of an inverting amplifier and is intended to be connected to one pin of an external 32.768kHz quartz crystal. 3 5 RESET RESET. This is a reset signal output. This signal notifies a host processor that the “watchdog” time period has expired or that the voltage has dropped below a fixed VTRIP threshold. It is an open drain active LOW output. Recommended value for the pull-up resistor is 5k Ω, If unused, connect to ground. 4 6 GND Ground. 5 7 SDA Serial Data (SDA) is a bidirectional pin used to transfer serial data into and out of the device. It has an open drain output and may be wire OR’ed with other open drain or open collector outputs. 6 8 SCL The Serial Clock (SCL) input is used to clock all serial data into and out of the device. The input buffer on this pin is always active (not gated). 71 VBAT This input provides a backup supply voltage to the device. VBAT supplies power to the device in the event that the VDD supply fails. This pin should be tied to ground if not used. 82 VDD Power Supply. ISL12027 |
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