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ISL1208IU8Z - Renesas Electronics

Description: The ISL1208 device is a low power real time clock with timing and crystal compensation, clock/calendar, power fail indicator, periodic or polled alarm, intelligent battery backup switching and battery-backed user SRAM. The oscillator uses an external, low-cost 32. 768kHz crystal. 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 c

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ISL1208IU8Z - Renesas Electronics - PCB symbol
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PCB Footprints
ISL1208IU8Z - Renesas Electronics PCB footprint - Small Outline Packages - Small Outline Packages - M8.118
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ISL1208IU8Z - Renesas Electronics - 3D model - Small Outline Packages - M8.118
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ISL1208IU8Z Details

  • Manufacturer Part Number:

    ISL1208IU8Z

  • 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:

    Thailand

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Factory Lead Time:

    18 Weeks

  • Manufacturer:

    Renesas Electronics Corporation

  • YTEOL:

    6.2

  • 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:

    2

  • Number of Terminals:

    8

  • On Chip Data RAM Width:

    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

  • RAM (words):

    2

  • Seated Height-Max:

    1.1 mm

  • Supply Current-Max:

    0.004 mA

  • Supply Voltage-Max:

    5.5 V

  • Supply Voltage-Min:

    2.7 V

  • Supply Voltage-Nom:

    3 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    MATTE TIN

  • 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

ISL1208IU8Z Frequently Asked Questions (FAQs)

  • A good PCB layout for the ISL1208IU8Z involves keeping the crystal oscillator circuitry away from noisy digital signals, using a solid ground plane, and minimizing trace lengths and vias. A 4-layer PCB with a dedicated ground plane is recommended.
  • To ensure reliable startup, use a high-quality crystal with a high ESR (Equivalent Series Resistance) and a suitable load capacitance. Also, add a 1-2 kΩ resistor in series with the crystal to reduce the drive level and prevent overdriving.
  • The maximum frequency deviation of the ISL1208IU8Z oscillator is ±20 ppm over the operating temperature range. To minimize frequency deviation, use a high-quality crystal, ensure proper PCB layout, and minimize temperature variations.
  • Yes, the ISL1208IU8Z can be used as an RTC in a battery-backed configuration. Connect a battery to the VBAT pin, and the device will continue to keep time even when the main power supply is off.
  • The ISL1208IU8Z has a 3-wire interface (SCL, SDA, and INT) that can be connected to a microcontroller or other digital circuitry. Use a level translator if the voltage levels are not compatible.

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ISL1208IU8Z Overview

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