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PT7C43390C Datasheet(PDF) 2 Page - Pericom Semiconductor Corporation |
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PT7C43390C Datasheet(HTML) 2 Page - Pericom Semiconductor Corporation |
2 / 38 page ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Real-time Clock Module 2015-12-0001 PT0280-8 12/11/15 2 PT7C43390/43390C Pin Configuration 1 2 3 INT1 4 PT7C43390 SOIC-8L XIN XOUT GND 8 7 6 5 INT2 SCL SDA VDD 1 INT1 PT7C43390C TDFN4x4-8L NC2 NC1 GND INT2 SCL SDA VDD 4 2 3 8 5 7 6 GND P 2 P 1 INT1 4 PT7C43390 TSSOP-8L XIN XOUT GND INT2 SCL SDA VDD 3 2 1 5 6 7 8 INT1 PT7C43390 TDFN2x3-8L XIN XOUT GND INT2 SCL SDA VDD 2 1 4 3 7 8 5 6 Pin Description Pin No. Pin Name Type Description 43390 43390C 1 1 INT1 O Output for Interrupt Signal 1. This pin outputs a signal of interrupt, or a clock pulse. By using the status register 2, users can select either of: alarm 1 interrupt, output of user-set frequency, per-minute edge interrupt, minute-periodical interrupt 1, minute-periodical interrupt 2, or 32.768 kHz output. This pin has NCH open drain output. 2 - XOUT O Oscillator Circuit Output. Together with X1, 32.768kHz crystal is connected between them. When 32.768kHz external input, X2 must be float. - 2 NC1 - No connected. 3 - XIN I Oscillator Circuit Input. Together with X1, 32.768kHz crystal is connected between them. Or external clock input. - 3 NC2 - No connected. 4 4 VSS P Negative power supply pin. Connects to GND. 5 5 INT2 O Output for Interrupt Signal 2. This pin outputs a signal of interrupt, or a clock pulse. By using the status register 2, users can select either of: alarm2 interrupt, output of user-set frequency, or minute-periodical interrupt 1. This pin has NCH open drain output. 6 6 SCL I Serial clock input pin. This pin is to input a clock pulse for I 2C-bus interface. The SDA pin inputs/outputs data by synchronizing with the clock pulse. 7 7 SDA I/O Serial Data Input/Output. This is a data input / output pin of I 2C-bus interface. This pin inputs / outputs data by synchronizing with a clock pulse from the SCL pin. This pin has CMOS input and NCH open drain output. Generally in use, pull up this pin to the VDD potential via a resistor, and connect it to any other device having open drain or open collector output with wired-OR connection. 8 8 VDD P Positive power supply pin. Connect this VDD pin with a positive power supply. |
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