DS1339U-33 Maxim Integrated Products, DS1339U-33 Datasheet
DS1339U-33
Specifications of DS1339U-33
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DS1339U-33 Summary of contents
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... DS1339U-2+ -40°C to +85°C DS1339U-3+ -40°C to +85°C DS1339U-33+ -40°C to +85°C + Denotes a lead(Pb)-free/RoHS-compliant device. # Denotes a RoHS-compliant device that may include lead that is exempt under the RoHS requirements. The lead finish is JESD97 category e3, and is compatible with both lead-based and lead-free soldering processes. ...
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ABSOLUTE MAXIMUM RATINGS Voltage Range on Any Pin Relative to Ground………………………………………………………………-0.3V to +6.0V Operating Temperature Range (Noncondensing)………………………………………………………….-40°C to +85°C Storage Temperature Range………………………………………………………………………………..-55°C to +125°C Soldering Temperature Range………………..See precautions in the Handling, PCB Layout, and Assembly section. Stresses beyond those listed ...
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DC ELECTRICAL CHARACTERISTICS (continued MIN to MAX -40°C to +85°C.) (Note PARAMETER Trickle-Charger Resistor Register 10h = A5h Typ BACKUP Trickle-Charger Resistor Register 10h = A6h, V ...
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AC ELECTRICAL CHARACTERISTICS (V = MIN to MAX -40°C to +85°C.) (Note 13 PARAMETER SCL Clock Frequency Bus Free Time Between a STOP and START Condition Hold Time (Repeated) START Condition (Note 8) LOW Period of ...
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POWER-UP/DOWN CHARACTERISTICS (T = -40C to +85°C) (Note 1, Figure A PARAMETER Recovery at Power-Up V Fall Time PF(MAX) PF(MIN) V Rise Time PF(MIN) PF(MAX) WARNING: Under no circumstances are negative undershoots, ...
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Figure 2. Timing Diagram Figure 3. Block Diagram "C" version only V CC Power Control V BACKUP GND SCL SERIAL BUS INTERFACE AND ADDRESS SDA REGISTER 1Hz/4.096kHz/8.192kHz/32.768kHz 1Hz Oscillator and divider CONTROL ...
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TYPICAL OPERATING CHARACTERISTICS (V = 3.3v +25°C, unless otherwise noted BACKUP 900 850 800 750 SQWE = 1) ( 700 650 600 550 500 450 400 350 300 1.3 1.8 2.3 2.8 V BACKUP I ...
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PIN DESCRIPTION PIN NAME SOP SO 1 — — BACKUP 4 15 GND 5 16 SDA 6 1 SCL 7 2 SQW/INT — 4–13 N.C. TYPICAL OPERATING CIRCUIT VCC CRYSTAL ...
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DETAILED DESCRIPTION The DS1339 serial real-time clock (RTC low-power clock/date device with two programmable time-of-day alarms and a programmable square-wave output. Address and data are transferred serially through an I The clock/date provides seconds, minutes, hours, day, date, ...
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Table 2. Crystal Specifications* PARAMETER SYMBOL Nominal Frequency f O Series Resistance ESR Load Capacitance C L *The crystal, traces, and crystal input pins should be isolated from RF generating signals. Refer to Application Note 58: Crystal Considerations for Dallas ...
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ADDRESS MAP Table 3 shows the address map for the DS1339 registers. During a multibyte access, when the address pointer reaches the end of the register space (10h), it wraps around to location 00h pointer incrementing to ...
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TIME AND DATE OPERATION The time and date information is obtained by reading the appropriate register bytes. registers. The time and date are set or initialized by writing the appropriate register bytes. The contents of the time and date registers ...
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Table 4. Alarm Mask Bits ALARM 1 REGISTER MASK BITS (Bit 7) DY/DT A1M4 A1M3 ALARM 2 REGISTER MASK BITS (Bit 7) ...
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Bit 2: Interrupt Control (INTCN). This bit controls the relationship between the two alarms and the interrupt output pins. When the INTCN bit is set to logic 1, a match between the timekeeping registers and the alarm 1 or alarm ...
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TRICKLE CHARGER REGISTER (10h) The simplified schematic in Figure 5 (TCS) bits (bits control the selection of the trickle charger. To prevent accidental enabling, only a pattern on 1010 enables the trickle charger. All other patterns disable ...
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Figure 5. Programmable Trickle Charger SELECT NOTE: ONLY 1010 ENABLES CHARGER TCS3 TCS2 TCS1 TCS0 BIT 7 BIT 6 BIT 5 BIT 4 TRICKLE CHARGE REGISTER SERIAL DATA BUS 2 The DS1339 ...
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Each data transfer is initiated with a START condition and terminated with a STOP condition. The number of data bytes transferred between START and STOP conditions is not limited, and is determined by the master device. The information is transferred ...
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DS1339, with the DS1339 acknowledging the transfer. The master may then transmit zero or more bytes of data, with the DS1339 acknowledging each byte received. The address pointer increments after each data byte is ...
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HANDLING, PCB LAYOUT, AND ASSEMBLY The DS1339C 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. Ultrasonic cleaning should be avoided to prevent damage to the ...
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... No circuit patent licenses are implied. Maxim/Dallas Semiconductor reserves the right to change the circuitry and specifications without notice at any time The Maxim logo is a registered trademark of Maxim Integrated Products, Inc. The Dallas logo is a registered trademark of Dallas Semiconductor. DESCRIPTION specification in the DC Electrical Characteristics BKDR description in the Pin Description table ...