DS1318 Maxim, DS1318 Datasheet
DS1318
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DS1318 Summary of contents
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... If an external event timer is desired, the control input EXT can control the counter operation. An open-drain output provides an interrupt, and a square-wave output provides a programmable square wave. The DS1318 is accessed through a byte- wide parallel interface, and operates over the industrial temperature range. Applications ...
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... For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability ...
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Parallel-Interface Elapsed Time Counter DC ELECTRICAL CHARACTERISTICS ( 3.7V -40°C to +85°C, unless otherwise noted.) (Note 2) CC BAT A PARAMETER SYMBOL Battery Input Current (ENOSC = 1) Battery Input Current I BATDR (ENOSC ...
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Parallel-Interface Elapsed Time Counter A0–A4 DQ0–DQ7 A0– DQ0–DQ7 A0– DQ0–DQ7 4 _____________________________________________________________________ CEA t CEL t OE OEA t OEL VALID Write Cycle Timing, Write-Enable Controlled t WC VALID t ...
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Parallel-Interface Elapsed Time Counter PF(MAX) V PF(MIN) t VCCF RECOGNIZED INPUTS VALID OUTPUTS POWER-UP/POWER-DOWN CHARACTERISTICS (T = -40°C to +85°C) (Note 2) A PARAMETER SYMBOL Recovery at Power-Up V Fall Time PF(MAX ...
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Parallel-Interface Elapsed Time Counter AC TEST CONDITIONS PARAMETER Input Pulse Levels Output Load Including Scope and Jig Input and Output Timing Measurement Reference Levels Input-Pulse Rise and Fall Times WARNING: Under no circumstances are negative undershoots, of any amplitude, allowed ...
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... BUFFERED COUNTER REGISTERS, CONTROL AND STATUS REGISTERS SUBSECONDS0 SUBSECONDS0 SUBSECONDS1 SUBSECONDS1 SECONDS0 SECONDS0 SECONDS1 SECONDS1 SECONDS2 SECONDS2 SECONDS3 SECONDS3 ALARM0 INTERNAL DIVIDERS AND COUNTERS ALARM1 ALARM2 ALARM3 CONTROL A CONTROL B STATUS Functional Diagram SQUARE-WAVE SQW RATE SELECTOR AND PRESCALER DS1318 IRQ PF/ALMF MUX 7 ...
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Parallel-Interface Elapsed Time Counter PIN NAME Connections for Standard 32.768kHz Quartz Crystal. The internal oscillator circuitry is designed for 1 X1 operation with a crystal having a 12.5pF specified load capacitance (C oscillator and can optionally be connected to an ...
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... A GROUND PLANE BETWEEN THE SIGNAL LINE AND THE DEVICE PACKAGE. Figure 2. Layout Example An external 32.768kHz oscillator can also drive the DS1318. In this configuration, the X1 pin is connected to the external oscillator signal and the X2 pin is left unconnected. The accuracy of the clock is dependent upon the accu- ...
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Parallel-Interface Elapsed Time Counter Table 3. Address Map ADDRESS BIT 7 BIT 6 BIT 5 00h SS3 SS2 01h SS11 SS10 02h S7 S6 03h S15 S14 04h S23 S22 05h S31 S30 06h ALM7 ALM6 ALM5 07h ALM15 ALM14 ...
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... Bit 1: Periodic Interrupt Enable (PIE). When PIE is set to logic 1, the DS1318 sets the IRQ pin low whenever the PF flag is set to 1. When PIE is 0, the PF flag does not affect the IRQ pin. ...
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Parallel-Interface Elapsed Time Counter BIT 7 BIT 6 BIT 5 PRS3 PRS2 PRS1 Bits Periodic Rate Select (PRS3–PRS0). When the oscillator is enabled (ENOSC = 1) the PF flag is set at the rates determined by the ...
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Parallel-Interface Elapsed Time Counter BIT 7 BIT 6 BIT 5 OSF UIP Bit 7: Oscillator Stop Flag (OSF). A logic 1 in this bit indicates that the oscillator either is or was stopped for some period of time and may ...
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... Package Information For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. ...
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... BAT Package Information table Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15 © ...