component
24CW640T-I
Public Made by Adomby adom
Microchip Tech EEPROM, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdown24CW640T-I
Microchip Tech · EEPROM · SOT-23-5
24CW640T-I from Microchip Tech, in a SOT-23-5. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | SCL | input | Serial clock input used to synchronize data transfer to and from the device. |
| 2 | VSS | power_in | Ground reference for the device. |
| 3 | SDA | bidirectional | Open-drain serial data pin for transferring addresses and data; it requires a pull-up resistor to VCC (typically 10 kΩ at 100 kHz and 2 kΩ at 400 kHz and 1 MHz), and it may change only while SCL is low. |
| 4 | VCC | power_in | Device power supply; the datasheet specifies an operating voltage range of 1.6 V to 5.5 V. |
| 5 | NC | unconnected | No connect pin; the datasheet lists it only as No Connect with no function. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SOT-23-5 |
| Category | Memory |
| Pins | 5 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| High-Level Input Voltage | VIH | 0.7 | 0.5 | V | Printed as min VCC x 0.7 and max VCC + 0.5; numbers are the VCC multiplier and offset, not absolute volts. VCC = 1.6V to 5.5V (table header). | 4 | |
| Low-Level Input Voltage | VIL | -0.6 | 0.3 | V | Printed as min -0.6 and max VCC x 0.3; max number is the VCC multiplier, not absolute volts. VCC = 1.6V to 5.5V (table header). | 4 | |
| Low-Level Output Voltage | VOL | 0.4 | V | IOL = 2.1 mA, VCC = 3.0V | 4 | ||
| Low-Level Output Voltage | VOL | 0.2 | V | IOL = 0.15 mA, VCC = 1.8V | 4 | ||
| Input Leakage Current | ILI | -1 | 1 | µA | VIN = VSS or VCC | 4 | |
| Output Leakage Current | ILO | -1 | 1 | µA | VOUT = VSS or VCC | 4 | |
| Internal Capacitance (all inputs and outputs) | CINT | 7 | pF | TAMB = +25°C, FCLK = 1 MHz, VCC = 5.5V (Note 1) | 4 | ||
| Operating Current (read) | ICCREAD | 0.3 | mA | VCC = 1.8V, FCLK = 400 kHz | 4 | ||
| Operating Current (read) | ICCREAD | 1 | mA | VCC = 5.5V, FCLK = 1 MHz | 4 | ||
| Operating Current (write) | ICCWRITE | 1 | mA | VCC = 5.5V, FCLK = 1 MHz | 4 | ||
| Standby Current | ICCS | 0.5 | µA | SCL = SDA = VCC = 1.8V | 4 | ||
| Standby Current | ICCS | 1 | µA | SCL = SDA = VCC = 5.5V | 4 | ||
| Clock Frequency | FCLK | 1000 | kHz | 1.6V ≤ VCC ≤ 5.5V | 5 | ||
| Clock High Time | THIGH | 260 | ns | 1.6V ≤ VCC ≤ 5.5V | 5 | ||
| Clock Low Time | TLOW | 500 | ns | 1.6V ≤ VCC ≤ 5.5V | 5 | ||
| SDA and SCL Rise Time | TR | 1000 | ns | 1.6V ≤ VCC ≤ 5.5V (Note 1) | 5 | ||
| SDA and SCL Fall Time | TF | 300 | ns | 1.6V ≤ VCC ≤ 5.5V (Note 1) | 5 | ||
| Start Condition Hold Time | THD:STA | 260 | ns | 1.6V ≤ VCC ≤ 5.5V | 5 | ||
| Start Condition Setup Time | TSU:STA | 260 | ns | 1.6V ≤ VCC ≤ 5.5V | 5 | ||
| Data Input Hold Time | THD:DAT | 0 | ns | (Note 2) | 5 | ||
| Data Input Setup Time | TSU:DAT | 50 | ns | 1.6V ≤ VCC ≤ 5.5V | 5 | ||
| Stop Condition Setup Time | TSU:STO | 260 | ns | 1.6V ≤ VCC ≤ 5.5V | 5 | ||
| Output Valid from Clock | TAA | 450 | ns | 1.6V ≤ VCC ≤ 5.5V | 5 | ||
| Bus Free Time | TBUF | 500 | ns | 1.6V ≤ VCC ≤ 5.5V | 5 | ||
| Input Filter Spike Suppression (SDA and SCL pins) | TSP | 50 | ns | (Note 3) | 5 | ||
| Write Cycle Time (byte or page) | TWC | 5 | ms | 5 | |||
| Write Endurance | 1e+06 | Write Cycles | TA = 25°C, 1.6V VCC 5.5V | 5 | |||
| Data Retention | 200 | Years | TA = 55°C | 5 | |||
| Time Required after VCC is Stable before the Device can Accept Commands | TPUP | 100 | µs | 6 | |||
| Power-on Reset Threshold Voltage | VPOR | 1.5 | V | 6 | |||
| Minimum Time at VCC = 0V between Power Cycles | TPOFF | 1 | ms | VCC = 0V | 6 | ||
| VCC Supply Voltage | VCC | 1.6 | 5.5 | V | Industrial (I) temperature range (table header) | 4 | |
| Ambient Temperature (Industrial) | TA | -40 | 85 | °C | Industrial (I) grade, VCC = 1.6V to 5.5V (table header) | 4 | |
| VCC Power-up Slew Rate | 0.1 | V/µs | Monotonic rise from VSS to minimum VCC during power-up | 6 | |||
| VCC Supply Voltage | VCC | 6.5 | V | 4 | |||
| All inputs and outputs w.r.t. VSS | -0.6 | 6.5 | V | 4 | |||
| Storage Temperature | -65 | 150 | °C | 4 | |||
| Ambient Temperature Under Bias | -40 | 85 | °C | 4 | |||
| ESD Protection on All Pins | 4 | kV | Printed as >4 kV | 4 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | tin | Package: SN = 8-Lead Plastic Small Outline, Narrow, 3.90 mm Body | 48 |
CAD (KiCad official)
- Symbol:
24CW640T-I - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
24cw640t-i-etched.step/24cw640t-i-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);24cw640t-i.step/24cw640t-i.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (50 pp, sha256
213f52757c654a29, retrieved 2026-10-20, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).