ISL1219IUZ Intersil, ISL1219IUZ Datasheet
ISL1219IUZ
Specifications of ISL1219IUZ
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ISL1219IUZ Summary of contents
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... RANGE ISL1219IUZ 1219Z 2.7V to 5.5V - MSOP ISL1219IUZ-T 1219Z 2.7V to 5.5V - MSOP NOTE: Intersil Pb-free products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations ...
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Block Diagram SDA SDA BUFFER SCL SCL BUFFER X1 CRYSTAL OSCILLATOR TRIP V BAT EVIN GND Pin Descriptions PIN NUMBER SYMBOL 1 X1 X1. The X1 pin is the input of an inverting amplifier and is ...
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Absolute Maximum Ratings Voltage SCL, SDA, and IRQ/F DD BAT (respect to ground ...
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Power-Down Timing Test Conditions: V SYMBOL PARAMETER V V Negative Slew Rate DD SR Interface Specifications Test Conditions: V SYMBOL PARAMETER V SDA and SCL Input Buffer LOW IL Voltage V SDA and SCL Input Buffer ...
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I C Interface Specifications Test Conditions: V SYMBOL PARAMETER t SDA and SCL Fall Time F Cb Capacitive Loading of SDA or SCL Rpu SDA and SCL Bus Pull-up Resistor Off-chip NOTES: 2. IRQ and F and EVDET Inactive. ...
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VDD Typical Performance Curves 1E-6 900E-9 800E-9 700E-9 600E-9 500E-9 400E-9 300E-9 200E-9 100E-9 000E+0 1.5 2.0 2.5 3.0 3.5 4.0 V (V) BAT FIGURE BAT 2.4E-06 2.2E- 2.0E-06 1.8E-06 1.6E-06 V ...
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Typical Performance Curves ...
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... Functional Description Power Control Operation The power control circuit accepts a V Many types of batteries can be used with Intersil RTC products. For example, 3.0V or 3.6V Lithium batteries are appropriate, and battery sizes are available that can power the ISL1219 for years. Another option is to use a Super Cap for applications where month ...
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These power control situations are illustrated in Figures 11 and 12. BATTERY BACKUP MODE TRIP V BAT BAT BATHYS FIGURE 11. BATTERY SWITCHOVER WHEN V BATTERY BACKUP MODE BAT V TRIP ...
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Event Detect Timing Diagram With Sampling Mode Enabled Case 1, Switched Opened Before I 15 CLKS (8x OFF OPEN EXT. SWITCH CLOSED HIGH EV IN LOW HIGH EVDET LOW 8 CLKS (8x) Case 2, Switched Opened After ...
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Accuracy of the Real Time Clock The accuracy of the Real Time Clock depends on the frequency of the quartz crystal that is used as the time base for the RTC. Since the resonant frequency of a crystal is temperature ...
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A sequential read will not result in the output of data from the memory array. At the end of ...
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Real Time Clock Registers Addresses [00h to 06h] RTC REGISTERS (SC, MN, HR, DT, MO, YR, DW) These registers depict BCD representations of the time. As such, SC (Seconds) and MN (Minutes) range from 0 to 59, HR (Hour) can ...
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STOP condition during a valid write cycle. CRYSTAL OSCILLATOR ENABLE BIT (XTOSCB) This bit enables/disables the internal crystal oscillator. When the XTOSCB is set to “1”, the oscillator is disabled, and the X1 pin ...
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EVENT DETECTION REGISTER (EV) The ISL1219 provides an easy to use event and tamper detection circuit. The Event Detection Register configures the functionality of the event detection circuits. EVENT INPUT SAMPLING SELECTION BITS (ESMP<1:0>) These two bits select the rate ...
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For example, C (ATR = 00000) = 12.5pF, LOAD C (ATR = 100000) = 4.5pF, and C LOAD = 20.25pF. The entire range for the series combination of load capacitance goes from 4.5pF to 20.25pF in 0.25pF steps. Note that ...
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Below are examples of both Single Event and periodic Interrupt Mode alarms. Example 1 – Alarm set with single interrupt (IM = ”0”) A single alarm will occur on January 1 at 11:30am. A. Set Alarm registers as follows: BIT ...
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Protocol Conventions Data states on the SDA line can change only during SCL LOW periods. SDA state changes during SCL HIGH are reserved for indicating START and STOP conditions (See Figure 14). On power up of the ISL1219, the SDA ...
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Device Addressing Following a start condition, the master must output a Slave Address Byte. The 7 MSBs are the device identifier. These bits are “1101111”. Slave bits “1101” access the register. Slave bits “111” specify the device select bits. The ...
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Application Section Event Detection The event detection feature of the ISL1219 is intended to be used for recording the time of single events that involve the opening of an enclosure, door, etc. The normal method of detection is with normally ...
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The most appropriate use for the hysteresis function is for glitch or noise filtering on the EVIN input signal. Battery Backup Details The event detection function has been designed to minimize power drain for extended life in ...
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Temperature Compensation The ATR and DTR controls can be combined to provide crystal drift temperature compensation. The typical 32.768kHz crystal has a drift characteristic that is similar to that shown in Figure 20. There is a turnover temperature (T ) ...
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In addition good idea to avoid a ground plane under the X1 and X2 pins and the crystal, as this will affect the load capacitance and therefore the oscillator accuracy of the circuit. If the ~IRQ/F pin ...
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C = 0.47F BAT V = 4.7V BAT2 V = 1.8V BAT1 (assumed minimal) LKG Solving equation 4 for this example, I BATAVG T = 0.47 * (2.9) / 4.38E-7 = 3.107E6 sec BACKUP Since there ...
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... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...