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ISL12057IUZ-T - Renesas Electronics

Description: 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 with 6pF load capacitance. The real-time clock tracks time with separate registers for hours, minutes, and seconds. The device has calendar registers for date, month, year, and day of the week. The calendar is accurate through 2099, with automatic leap year correction.

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ISL12057IUZ-T - Renesas Electronics - PCB symbol
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ISL12057IUZ-T - Renesas Electronics PCB footprint - Small Outline Packages - Small Outline Packages - M8.118
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ISL12057IUZ-T - Renesas Electronics - 3D model - Small Outline Packages - M8.118
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ISL12057IUZ-T Details

  • Manufacturer Part Number:

    ISL12057IUZ-T

  • Brand Name:

    Renesas

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    MSOP

  • Package Description:

    MSOP-8

  • Pin Count:

    8

  • Manufacturer Package Code:

    M8.118

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Factory Lead Time:

    18 Weeks

  • Manufacturer:

    Renesas Electronics Corporation

  • YTEOL:

    6

  • Clock Frequency-Max:

    0.032 MHz

  • Information Access Method:

    SERIAL(I2C)

  • Interrupt Capability:

    Y

  • JESD-30 Code:

    S-PDSO-G8

  • JESD-609 Code:

    e3

  • Length:

    3 mm

  • Moisture Sensitivity Level:

    1

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    TSSOP

  • Package Equivalence Code:

    TSSOP8,.2

  • Package Shape:

    SQUARE

  • Package Style:

    SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    1.1 mm

  • Supply Voltage-Max:

    3.6 V

  • Supply Voltage-Min:

    1.8 V

  • Supply Voltage-Nom:

    3 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.65 mm

  • Terminal Position:

    DUAL

  • Time-Min:

    SECONDS

  • Time@Peak Reflow Temperature-Max (s):

    30

  • Volatile:

    NO

  • Width:

    3 mm

  • uPs/uCs/Peripheral ICs Type:

    TIMER, REAL TIME CLOCK

ISL12057IUZ-T Frequently Asked Questions (FAQs)

  • A good PCB layout for the ISL12057IUZ-T involves keeping the crystal oscillator circuitry close to the IC, using a ground plane to reduce noise, and minimizing the length of the clock signal traces. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane.
  • To ensure the accuracy of the RTC, it's essential to use a high-quality crystal oscillator with a low ppm error, maintain a stable power supply voltage, and minimize temperature variations. Additionally, the RTC should be calibrated periodically to account for any deviations.
  • The maximum allowed capacitance for the crystal oscillator circuit in the ISL12057IUZ-T is 20pF. Exceeding this value may affect the oscillator's start-up time and stability.
  • Yes, the ISL12057IUZ-T is suitable for battery-powered devices due to its low power consumption. However, it's essential to consider the power consumption of the entire system, including the RTC, and ensure that the battery life meets the application's requirements.
  • The POR and BOR functions in the ISL12057IUZ-T are designed to ensure a reliable start-up sequence. To handle these functions, ensure that the power supply voltage is stable and within the recommended range, and that the system is designed to reset properly during power-on and brown-out conditions.

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ISL12057IUZ-T Overview

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