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PT7C4337LE Datasheet(PDF) 2 Page - Pericom Semiconductor Corporation |
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PT7C4337LE Datasheet(HTML) 2 Page - Pericom Semiconductor Corporation |
2 / 23 page ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| 2013-06-0002 PT0205-9 06/18/13 2 PT7C4337 Real-time Clock Module (I 2C Bus) Pin Assignment X2 INTA GND VCC SQW/INTB SCL 6 7 8 1 2 3 X1 4 5 SDA PT7C4337 DIP-8、SOIC-8 MSOP8 Pin Description Pin No. Pin Type Description 1 X1 I Oscillator Circuit Input. Together with X1, 32.768kHz crystal is connected between them. Or external clock input. 2 X2 O Oscillator Circuit Output. Together with X1, 32.768kHz crystal is connected between them. When 32.768kHz external input, X2 must be float. 6 SCL I Serial Clock Input. SCL is used to synchronize data movement on the I 2C serial interface. 5 SDA I/O Serial Data Input/Output. SDA is the input/output pin for the 2-wire serial interface. The SDA pin is open-drain output and requires an external pull-up resistor. 3 INTA O Interrupt Output. When enabled, INTA is asserted low when the time matches the values set in the alarm registers. This pin is an open-drain output and requires an external pull up resistor. 7 SQW/I NTB O Square-Wave/Interrupt Output. Programmable square-wave or interrupt output signal. It is an open-drain output and requires an external pull up resistor. 8 VCC P Power. Primary power for PT7C4337. 4 GND P Ground. / NC No Connect. These pins are not connected internally, but must be grounded for proper operation. Maximum Ratings Storage Temperature ............................................................ -65℃ to +150℃ Ambient Temperature with Power Applied ........................... -40℃ to +85℃ Supply Voltage to Ground Potential (VCC to GND) ............... -0.3V to +6.5V DC Input (All Other Inputs except Vcc & GND) ...................................... -0.3Vto(Vcc+0.3V) DC Output Voltage (SDA, /INTA, /INTB pins)........................................-0.3V to +6.5V DC Output Current (FOUT) ............................................... -0.3V to (Vcc +0.3V) Power Dissipation .............................................320mW(depend on package) Note: Stresses greater than those listed under MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. |
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