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24CW640-I/SN - Microchip

Description: EEPROM 64 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp

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24CW640-I/SN - Microchip - PCB symbol
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24CW640-I/SN - Microchip PCB footprint - Small Outline Packages - Small Outline Packages - SN
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24CW640-I/SN - Microchip - 3D model - Small Outline Packages - SN
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24CW640-I/SN Details

  • Manufacturer Part Number:

    24CW640-I/SN

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    SOIC-8

  • Pin Count:

    8

  • Manufacturer Package Code:

    SOIC-8

  • Country Of Origin:

    Thailand

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.32.00.51

  • Factory Lead Time:

    6 Weeks

  • Manufacturer:

    Microchip Technology Inc

  • YTEOL:

    18

  • Access Time-Max:

    450 ns

  • Additional Feature:

    DATA RETENTION TIME @ 55 DEGREE CENTIGRADE

  • Clock Frequency-Max (fCLK):

    1 MHz

  • Data Retention Time-Min:

    200

  • Endurance:

    1000000 Write/Erase Cycles

  • I2C Control Byte:

    1010000R

  • JESD-30 Code:

    R-PDSO-G8

  • JESD-609 Code:

    e3

  • Length:

    4.9 mm

  • Memory Density:

    65536 bit

  • Memory IC Type:

    EEPROM

  • Memory Width:

    8

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Ports:

    1

  • Number of Terminals:

    8

  • Number of Words:

    8192 words

  • Number of Words Code:

    8000

  • Operating Mode:

    SYNCHRONOUS

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Organization:

    8KX8

  • Output Characteristics:

    OPEN-DRAIN

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP8,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Parallel/Serial:

    SERIAL

  • Peak Reflow Temperature (Cel):

    260

  • Programming Voltage:

    1.8 V

  • Screening Level:

    AEC-Q100

  • Seated Height-Max:

    1.75 mm

  • Serial Bus Type:

    I2C

  • Standby Current-Max:

    0.000001 A

  • Supply Current-Max:

    0.001 mA

  • Supply Voltage-Max (Vsup):

    5.5 V

  • Supply Voltage-Min (Vsup):

    1.6 V

  • Supply Voltage-Nom (Vsup):

    1.8 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

  • Width:

    3.9 mm

  • Write Cycle Time-Max (tWC):

    5 ms

  • Write Protection:

    SOFTWARE

24CW640-I/SN Frequently Asked Questions (FAQs)

  • The maximum clock frequency for the 24CW640-I/SN is 400 kHz, as specified in the datasheet. However, it's recommended to operate at a lower frequency to ensure reliable operation and minimize power consumption.
  • Page writes and block erases in the 24CW640-I/SN require specific protocols and timing. Refer to the datasheet's 'Write Operation' and 'Erase Operation' sections for detailed information. Additionally, consider using Microchip's application notes and example code for guidance.
  • A simple POR circuit can be implemented using a resistor, capacitor, and diode. Microchip recommends a 10 kΩ resistor, 10 μF capacitor, and 1N4148 diode. This circuit ensures a clean power-on reset and prevents unwanted writes or erases during power-up.
  • To protect the 24CW640-I/SN from voltage spikes and noise, use a voltage regulator with a low dropout voltage (LDO) and add decoupling capacitors (e.g., 10 μF and 100 nF) close to the device. Additionally, consider using a TVS (transient voltage suppressor) diode or a ferrite bead to filter out high-frequency noise.
  • The 24CW640-I/SN has a typical write endurance of 100,000 cycles per page. However, this can vary depending on factors like operating conditions, write frequency, and data patterns. It's essential to follow Microchip's guidelines for write endurance and consider implementing wear leveling or error correction mechanisms in your design.

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24CW640-I/SN Overview

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About Microchip

Microchip Technology Inc. is a leading manufacturer of microcontrollers and semiconductor devices for a wide range of applications in the aerospace, automotive, consumer electronics, industrial, and medical industries. Alongside a comprehensive product portfolio, Microchip Technology Inc. also provides easy-to-use development tools that enable engineers to create optimal designs quickly with minimal iterations to reduce risk while lowering total system costs to market. Headquartered in Chandler, Arizona, th

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