Datenblatt-Suchmaschine für elektronische Bauteile |
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ISL1208IU8-TK Datenblatt(PDF) 2 Page - Intersil Corporation |
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ISL1208IU8-TK Datenblatt(HTML) 2 Page - Intersil Corporation |
2 / 21 page 2 FN8085.3 July 29, 2005 Block Diagram I2C INTERFACE RTC CONTROL LOGIC ALARM FREQUENCY OUT RTC DIVIDER SDA BUFFER CRYSTAL OSCILLATOR POR SWITCH SCL BUFFER SDA SCL X1 X2 VDD VBAT IRQ/ FOUT INTERNAL SUPPLY VTRIP Seconds Minutes Hours Day of Week Date Month Year USER SRAM CONTROL REGISTERS Pin Descriptions PIN NUMBER SYMBOL DESCRIPTION 1 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 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. 3VBAT 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. 4 GND Ground. 5 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 SCL The Serial Clock (SCL) input is used to clock all serial data into and out of the device. 7IRQ/FOUT Interrupt Output/Frequency Output is a multi-functional pin that can be used as interrupt or frequency output pin. The function is set via the configuration register. 8VDD Power supply. ISL1208 |
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