isl12057 Intersil Corporation, isl12057 Datasheet
isl12057
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isl12057 Summary of contents
Page 1
... Data Sheet Low Power and Low Cost RTC with Alarm Function and Dual IRQ pins The ISL12057 device is a low power real time clock that is pin compatible and functionally equivalent to Maxim DS1337 with clock/calendar and alarm function. The oscillator uses an external, low-cost 32.768kHz crystal. ...
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... ISL12057IUZ (Note 1) 12057 ISL12057IUZ-T* (Note 1) 12057 ISL12057IRUZ-T* (Note 2) 057 *Please refer to TB347 for details on reel specifications. NOTES: 1. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). ...
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... Interrupt Output 1/Frequency Output is a multi-functional pin that can be used as alarm interrupt or frequency output OUT pin. The function is set via the configuration register. This pin is open drain and requires an external pull-up resistor. It has a default output of 32.768kHz at power up Power supply DD 3 ISL12057 DESCRIPTION FN6755.0 June 15, 2009 ...
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... Pulse width Suppression Time at IN SDA and SCL Inputs t SCL Falling Edge to SDA Output AA Data Valid 4 ISL12057 Thermal Information Thermal Resistance (Typical) 8 Lead SOIC (Note Lead MSOP (Note 3 Lead µTDFN (Note Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C Pb-free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp Temperature = -40° ...
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... C specific parameters and are not production tested, however, they are used to set conditions for testing devices to validate specification. 9. Parts will work with SDA pull-up voltage above the V 10. Specified at +25°C. 5 ISL12057 Over the recommended operating conditions unless otherwise specified. (Continued) TEST CONDITIONS SDA crossing 70 during a ...
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... Changes Allowed N/A EQUIVALENT AC OUTPUT LOAD CIRCUIT FOR V 5.0V 1533Ω SDA, IRQ1/F OUT AND IRQ2 100pF FIGURE 1. STANDARD OUTPUT LOAD FOR TESTING THE DEVICE WITH ISL12057 HIGH LOW t SU:DAT t HD:DAT OUTPUTS Will be steady Will change from LOW to HIGH Will change ...
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... X1, X2 The X1 and X2 pins are the input and output, respectively inverting amplifier. An external 32.768kHz quartz crystal is used with the ISL12057 to supply a timebase for the real time clock. Refer to Figure 6. The device can also be driven directly from a 32.768kHz square wave source with peak-to-peak voltage from 0V to VDD at X1 pin with X2 pin floating ...
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... These parameters are available from the crystal manufacturer Serial Interface The ISL12057 has an I access to the real time clock registers, control and status registers and the alarm registers. The I compatible with other industry I a bidirectional data signal (SDA) and a clock signal (SCL). ...
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... This means that the year 2000 is a leap year, the year 2100 is not. The ISL12057 does not correct for the leap year in the year 2100. Addresses [0Eh to 0Fh] The Control and Status Registers consist of the Status Register, Interrupt and Alarm Register ...
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... SR can only set it to “0”, not “1”. COMMENT OSCILLATOR FAILURE BIT (OSF) This bit is set to a “1” when there is no oscillation on X1 pin. This is set by hardware (ISL12057 internally), and can only be disabled by having an oscillation on X1 and and manually reset to “0” to reset it.. Alarm1 Registers ...
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... These enable bits specify which alarm registers (minutes, hour, and date/day) are used to 11 ISL12057 make the comparison. When all the enable bits are set to “1”, the Alarm2 will trigger once per minute. Note that there are no alarm bytes for second, month and year ...
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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 7). On power-up of the ISL12057, the SDA pin is in the input mode. 2 All I ...
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... Identification byte with the R/W bit set to “1”. After each of the three bytes, the ISL12057 responds with an ACK. Then the ISL12057 transmits Data Bytes as long as the master responds with an ACK during the SCL cycle following the eighth bit of each byte. The master terminates the read operation (issuing a STOP condition) following the last bit of the last Data Byte (see Figure 11) ...
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... Table 8 lists some recommended surface mount crystals and the parameters of each. This list is not exhaustive and other surface mount devices can be used with the ISL12057 if their specifications are very similar to the devices listed. The crystal should have a required parallel load capacitance of 6pF and an equivalent series resistance of less than 50k. The crystal’ ...
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... B - 10. Datums -A - and to be determined at Datum plane . - H - 11. Controlling dimension: MILLIMETER. Converted inch dimen- sions are for reference only. 15 ISL12057 M8.118 (JEDEC MO-187AA) 8 LEAD MINI SMALL OUTLINE PLASTIC PACKAGE SYMBOL θ ...
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... Package Outline Drawing L8.2x2 8 Lead Ultra Thin Dual Flat No-Lead COL Plastic Package (UTDFN COL) Rev 3, 11/07 2.00 6 PIN 1 INDEX AREA (4X) 0.15 TOP VIEW ( TYPICAL RECOMMENDED LAND PATTERN 16 ISL12057 A PIN #1 INDEX AREA 0.5 ±0 MAX NOTES: 1 ...
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... 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. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 17 ISL12057 M8.15 (JEDEC MS-012-AA ISSUE C) 8 LEAD NARROW BODY SMALL OUTLINE PLASTIC PACKAGE ...