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ISL12026IBZ-T Arkusz danych(PDF) 2 Page - Intersil Corporation |
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ISL12026IBZ-T Arkusz danych(HTML) 2 Page - Intersil Corporation |
2 / 24 page 2 FN8231.5 October 23, 2006 Block Diagram X1 X2 OSCILLATOR FREQUENCY TIMER LOGIC DIVIDER CALENDAR 8 CONTROL/ REGISTERS 1Hz TIME KEEPING REGISTERS ALARM REGS COMPARE CONTROL DECODE LOGIC ALARM (EEPROM) (EEPROM) SCL SDA SERIAL INTERFACE DECODER 4K EEPROM ARRAY REGISTERS STATUS (SRAM) SELECT IRQ/FOUT VDD VBAT 32.768kHz (SRAM) BATTERY CIRCUITRY SWITCH OSC COMPENSATION Pin Descriptions PIN NUMBER SYMBOL 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. (See Application Section) 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. (See Application Section) 35 IRQ/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 control register. This output is an open drain configuration. 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. ISL12026 |
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