DS1340Z-18+ Maxim Integrated Products, DS1340Z-18+ Datasheet

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... Automatic Power-Fail Detect and Switch Circuitry o Trickle-Charge Capability o Low Timekeeping Voltage Down to 1.3V o Three Operating Voltage Ranges (1.8V, 3V, and 3.3V) o Oscillator Stop Flag o Available in 8-Pin µSOP or SO Packages o Underwriters Laboratories (UL) Recognized PART DS1340Z-18+ -40°C to +85°C DS1340Z-3+ DS1340Z-33+ -40°C to +85°C DS1340U-18+ CC DS1340U-3+ DS1340U-33+ C1 DS1340C-18# -40° ...

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I C RTC with Trickle Charger ABSOLUTE MAXIMUM RATINGS Voltage Range on V Pin Relative to Ground .....-0.3V to +6.0V CC Voltage Range on SDA, SCL, and FT/OUT Relative to Ground..................................-0. Operating Temperature Range ...........................-40°C to +85°C ...

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RECOMMENDED DC OPERATING CONDITIONS ( -40°C to +85°C, unless otherwise noted. Typical values are MIN CC MAX CC A otherwise noted.) (Note 1) PARAMETER SYMBOL Supply Voltage (Note 8) Input ...

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I C RTC with Trickle Charger POWER-UP/POWER-DOWN CHARACTERISTICS (T = -40°C to +85°C) (Figure 2) A PARAMETER SYMBOL Recovery at Power-Up V Fall Time PF(MAX) V PF(MIN) V Rise Time PF(MIN) V PF(MAX) ...

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PF(MAX) V PF(MIN) INPUTS RECOGNIZED OUTPUTS VALID Figure 2. Power-Up/Power-Down Timing (V = +3.3V +25°C, unless otherwise noted vs CCSA CC 250 200 150 100 50 0 1.0 ...

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I C RTC with Trickle Charger PIN NAME 8 16 Connections for a Standard 32.768kHz Quartz Crystal. The internal oscillator circuitry is designed for 1 — X1 operation with a crystal having a specified load capacitance (C and can ...

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V drops below V CC BACKUP maintained from the V BACKUP returned to nominal levels (Table 1). After V above V , read and write access is allowed t PF Oscillator Circuit The DS1340 uses an external 32.768kHz crystal. ...

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I C RTC with Trickle Charger X1 X2 "C" VERSION ONLY BACKUP SCL SDA Figure 5. Functional Diagram Address Map Table 3 shows the DS1340 address map. The RTC reg- isters are located in address locations ...

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The day-of-week register increments at midnight. Values that correspond to the day of week are user-defined but must be sequential (i.e equals Sunday, then 2 equals Monday, and so on). Illogical time and date ...

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I C RTC with Trickle Charger Table 4. Trickle-Charge Register TCS3 TCS2 TCS1 ...

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Negative calibration blanks 128 cycles of the 32,768Hz oscillator, slowing the clock down. Positive calibration inserts 256 cycles of the 32,768Hz oscillator, speeding the clock up binary 1 ...

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I C RTC with Trickle Charger determined by the master device. The information is transferred byte-wise and each receiver acknowledges with a ninth bit. Acknowledge: Each receiving device, when addressed, is obliged to generate an acknowl- edge after the ...

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ADDRESS> <R/W> <WORD ADDRESS (n)> S 1101000 0 A XXXXXXXX S - START MASTER TO SLAVE A - ACKNOWLEDGE (ACK STOP R/W - READ/WRITE OR DIRECTION BIT ADDRESS Figure 8. Data Write—Slave Receiver Mode <SLAVE ADDRESS> <R/W> ...

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I C RTC with Trickle Charger Handling, PC Board Layout, and Assembly The DS1340C package contains a quartz tuning-fork crystal. Pick-and-place equipment may be used, but precautions should be taken to ensure that excessive shocks are avoided. Exposure to ...

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REVISION REVISION NUMBER DATE 0 6/03 Initial release. Changed “2-wire” to “I Added UL recognition info bullet to the Features section and to the V description. Added the “I/O Capacitance (SCL, SDA)” parameter (C 1 7/04 Characteristics table. Added “SDA, ...

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... 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. 16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2010 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc ...