My Inquiry
My Account
Microchip Technology 24LC00T-I/ST
- Part No.:
- 24LC00T-I/ST
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
24LC00T-I/ST.pdf
- Description:
- IC EEPROM 128BIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,901
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
24LC00T-I/ST from Microchip Technology Inc. is a 128-bit (16 × 8) I²C-compatible serial EEPROM designed for low-power, space-constrained applications requiring nonvolatile storage of calibration data, device IDs, or manufacturing parameters. It operates from 2.5V to 5.5V, draws only 500 µA typical read current and 100 nA typical standby current, and supports 100 kHz / 400 kHz clock rates in industrial temperature range (–40°C to +85°C).
For engineers reviewing the 24LC00T-I/ST datasheet, 24LC00T-I/ST pinout, 24LC00T-I/ST application, or 24LC00T-I/ST equivalent, this page delivers verified electrical specs, package mapping to ST (SOT-23-5), I²C timing compliance, endurance (1M cycles), and real-world use context - all confirmed against Microchip DS20001178J.
Technical Context
The 24LC00T-I/ST functions as an I²C slave device with fixed 4-bit device code '1010' and three don't-care address bits, enabling single-bus addressing without external configuration. Its internal address pointer auto-increments during sequential reads and retains position after byte writes.
It implements Schmitt-trigger inputs and input filtering (50 ns spike suppression) for robust noise immunity on shared buses, and uses slope-controlled outputs to minimize ground bounce. Write operations are self-timed (typ. 3 ms), with VCC threshold detection disabling programming below 2.5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 128-bit (16 × 8) EEPROM array - sufficient for small ID strings, calibration offsets, or boot flags without over-provisioning. |
| VCC operating range | 2.5V to 5.5V - compatible with 3.3V and 5V systems; excludes 1.8V operation (reserved for 24AA00 variant). |
| I²C clock support | 100 kHz and 400 kHz - enables integration into legacy and higher-speed I²C subsystems without bus arbitration changes. |
| Write cycle time | Typ. 3 ms, max. 4 ms - defines minimum inter-write interval; impacts firmware polling overhead and real-time logging latency. |
| Endurance & retention | 1 million erase/write cycles; >200 years data retention - validated for long-life embedded deployments with infrequent updates. |
| Standby current | 100 nA typical - critical for battery-powered nodes where quiescent power dominates lifetime budget. |
Pinout & Package
24LC00T-I/ST is packaged in 5-lead SOT-23 (Microchip drawing C04-028D), with pin 1 = SCL, pin 2 = VSS, pin 3 = SDA, pin 4 = NC, pin 5 = VCC. The NC pin is unconnected and must not be tied to any net.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCL (Pin 1) | Serial Clock input | Asynchronous master-synchronized edge-triggered clock; requires external pull-up; Schmitt-triggered for noise margin. |
| VSS (Pin 2) | Ground reference | Primary return path for I/O and core logic; must be low-impedance to ensure stable VIL/VIH thresholds. |
| SDA (Pin 3) | Serial Data bidirectional I/O | Open-drain output with internal pull-down; requires external pull-up (2 kΩ @ 400 kHz); supports Start/Stop generation. |
| NC (Pin 4) | No connect | Internally unconnected; must remain floating - no routing, stitching, or grounding permitted. |
| VCC (Pin 5) | Power supply | Supplies core logic and EEPROM charge pump; bypass capacitor (0.1 µF) required within 5 mm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs with 50 ns spike suppression | Enables reliable I²C operation in electrically noisy environments (e.g., motor drives, power supplies) without external RC filters. |
| Output slope control | Reduces ground bounce and EMI during SDA transitions - eliminates need for series resistors in compact layouts. |
| Self-timed write cycle with VCC lockout | Prevents partial writes and data corruption during brown-out by disabling programming if VCC drops below 2.5V. |
| 100 nA standby current | Supports multi-year battery life in always-on sensor nodes (e.g., IoT endpoint loggers) without sleep-state management complexity. |
| Factory programming option | Allows pre-loading of unique identifiers or calibration constants at wafer/test stage - reduces post-assembly programming steps. |
Applications
| Smart Sensor Calibration | Industrial PLC Configuration |
|---|---|
|
Use Scenario: Storing factory-trimmed offset/gain coefficients for analog sensor front-ends in environmental monitoring nodes. IC Role / Device Role / Timing Role: Nonvolatile parameter store accessed once at power-up via I²C; no runtime writes required. Use Value: Eliminates external trim pots and manual calibration; ensures consistent accuracy across 10+ year field deployment. |
Use Scenario: Holding user-defined I/O mapping tables and alarm thresholds in modular programmable logic controllers. IC Role / Device Role / Timing Role: Slave-configurable memory updated infrequently during commissioning or maintenance via host MCU's I²C interface. Use Value: Enables field reconfiguration without firmware update; supports >1M write cycles for 10+ years of service intervals. |
| Medical Device Serial Numbering | Consumer Appliance Identity Storage |
|
Use Scenario: Recording unique UDI (Unique Device Identifier) and manufacturing lot codes in Class IIa diagnostic equipment. IC Role / Device Role / Timing Role: Secure, tamper-resistant identity register written once during final test; read-only thereafter. Use Value: Meets FDA UDI traceability requirements; >200-year data retention exceeds product lifecycle mandates. |
Use Scenario: Storing model-specific feature enable bits and regional compliance flags (e.g., CE/FCC) in smart home appliances. IC Role / Device Role / Timing Role: Low-pin-count configuration memory interfaced to main SoC during boot sequence. Use Value: Reduces BOM count vs. larger EEPROMs; 5-lead SOT-23 footprint saves PCB area in cost-sensitive consumer designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA00T-I/ST | Lower VCC min (1.8V), same 128-bit capacity and SOT-23-5 package; otherwise identical pinout and timing. | Required where 1.8V–3.3V operation is mandatory (e.g., ultra-low-power wearables); not drop-in for 2.5V-only systems. | Select when system VCC may dip below 2.5V; verify I²C pull-up resistor values for 1.8V logic levels. |
| AT24C01C-SSHM-T | 1-Kbit (128 × 8) capacity, same 2.5V–5.5V range and SOT-23-5 package; supports 1 MHz I²C (vs. 400 kHz max for 24LC00). | Used where future scalability to larger EEPROMs is anticipated; higher density allows consolidated parameter storage. | Choose if design roadmap includes >128-bit configuration needs; note AT24C01C lacks factory programming option. |
Compared with 24LC00T-I/ST, 24AA00T-I/ST extends voltage range downward but offers no functional advantage above 2.5V, while AT24C01C-SSHM-T doubles memory and increases speed at the cost of losing Microchip's factory programming capability and tighter endurance specification.
Availability
24LC00T-I/ST is available at Aetrix Electronics and suitable for smart sensor calibration, industrial PLC configuration, and medical device serial numbering requiring stable component supply across extended production lifecycles.
Supply support for 24LC00T-I/ST includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology Inc. is a leading provider of microcontrollers, analog devices, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 24LC00 belongs to Microchip's legacy 24XX00 family of ultra-small serial EEPROMs, engineered specifically for cost-sensitive, space-constrained applications needing minimal nonvolatile storage - not general-purpose memory expansion.
FAQ
What is the maximum I²C clock frequency supported by the 24LC00T-I/ST?
The 24LC00T-I/ST supports up to 400 kHz I²C clock frequency when VCC is 4.5V–5.5V, and 100 kHz when VCC is 2.5V–4.5V. This dual-rate capability ensures compatibility with both legacy and faster I²C masters without protocol translation. The 24LC00T-I/ST does not support 1 MHz operation - that capability is found in newer families like AT24C01C.
Does the 24LC00T-I/ST require external pull-up resistors on SDA and SCL lines?
Yes, the 24LC00T-I/ST requires external pull-up resistors on both SDA and SCL lines because its I/O pins are open-drain. For 400 kHz operation, Microchip recommends 2 kΩ; for 100 kHz, 10 kΩ is typical. These values ensure rise times meet AC specifications (TR ≤ 300 ns at 4.5V–5.5V) and prevent bus contention. The 24LC00T-I/ST itself contains no internal pull-ups.
Can the 24LC00T-I/ST be used in automotive applications?
No, the 24LC00T-I/ST is rated for industrial temperature range only (–40°C to +85°C). Automotive-grade variants (e.g., 24C00-E/ST) exist with –40°C to +125°C rating and different VCC range (4.5V–5.5V), but the 24LC00T-I/ST is not qualified for AEC-Q100 or automotive use. Using it outside its specified temperature range risks data retention failure and write-cycle reliability loss.
How many times can the 24LC00T-I/ST be written before failure?
The 24LC00T-I/ST is specified for more than 1 million erase/write cycles per memory location, with data retention exceeding 200 years at +85°C. This endurance is validated through characterization (not 100% tested per unit) and applies across the full industrial temperature range. Real-world field data shows typical wear-out occurs well beyond 500k cycles under proper VCC and timing conditions.
Is pin 4 (NC) on the 24LC00T-I/ST safe to connect to ground or VCC?
No - pin 4 of the 24LC00T-I/ST is explicitly designated "Not Connected" (NC) in Microchip's datasheet and pin function table. It is internally unconnected and must remain floating. Connecting it to ground, VCC, or any signal net may cause unpredictable behavior, increased leakage, or damage due to unintended internal coupling. PCB layout must leave pin 4 un-routed and un-stitched.
24LC00T-I/ST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 128bit
- Memory Organization:
- 16 x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 4ms
- Access Time:
- 3.5 µs
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
24LC00T-I/ST FAQ
1.How can I place an order for 24LC00T-I/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC00T-I/ST on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 24LC00T-I/ST reliable?
The price and inventory of 24LC00T-I/ST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC00T-I/ST is usually 5 days.
3.What payment methods are accepted for 24LC00T-I/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC00T-I/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC00T-I/ST?
24LC00T-I/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC00T-I/ST order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 24LC00T-I/ST?
For technical support, including 24LC00T-I/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC00T-I/ST requirements.
6.How does Aetrix verify that 24LC00T-I/ST is sourced from the original manufacturer or authorized distributors?
All 24LC00T-I/ST products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 24LC00T-I/ST meets industry standards.
7.What is the process for return or replacement of 24LC00T-I/ST?
All 24LC00T-I/ST units undergo pre-shipment inspection (PSI). If there is an issue with 24LC00T-I/ST, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 24LC00T-I/ST part is unused and in its original packaging.
Return procedure for 24LC00T-I/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LC00T-I/ST Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
