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ISL12029 Arkusz danych(PDF) 2 Page - Intersil Corporation |
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ISL12029 Arkusz danych(HTML) 2 Page - Intersil Corporation |
2 / 30 page 2 FN6206.9 August 12, 2010 Block Diagram X1 X2 OSCILLATOR FREQUENCY TIMER LOGIC DIVIDER CALENDAR 8 CONTROL/ REGISTERS 1Hz TIME KEEPING REGISTERS ALARM REGS COMPARE RESET CONTROL DECODE LOGIC ALARM (EEPROM) (EEPROM) SCL SDA SERIAL INTERFACE DECODER 4k EEPROM ARRAY WATCHDOG TIMER LOW VOLTAGE RESET REGISTERS STATUS (SRAM) SELECT VDD VBACK 32.768kHZ (SRAM) BATTERY CIRCUITRY SWITCH OSC COMPENSATION IRQ/FOUT 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. 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. 6 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. 7 GND Ground. 8 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. 9 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). 12 IRQ/FOUT Interrupt Output/Frequency Output is a multi-functional pin that can be used as interrupt or frequency output pin. It is an open drain output. The function is set via the configuration register. 13 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. 14 VDD Power Supply. 3, 4, 5, 10, 11 NC No Internal Connection. ISL12029, ISL12029A |
Podobny numer części - ISL12029_10 |
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Podobny opis - ISL12029_10 |
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