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Microchip Technology 24C00T/ST
- Part No.:
- 24C00T/ST
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
24C00T/ST.pdf
- Description:
- IC EEPROM 128BIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,859
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Product details
Overview
24C00T/ST from Microchip Technology Inc. is a 128-bit (16 × 8) I²C-compatible serial EEPROM designed for low-overhead nonvolatile storage of calibration data, device IDs, and manufacturing parameters in space-constrained systems. It operates strictly within 4.5V–5.5V supply range, supports Industrial and Automotive temperature ranges (−40°C to +125°C), features Schmitt-trigger inputs, and delivers typical standby current of 100 nA.
For engineers reviewing the 24C00T/ST datasheet, 24C00T/ST pinout, 24C00T/ST application, or 24C00T/ST equivalent, this page provides verified electrical specs, validated SOT-23 pin mapping, confirmed automotive-grade thermal performance, and real-world use cases in sensor calibration and firmware ID storage - all derived from Microchip's DS20001178J datasheet.
Technical Context
The 24C00T/ST implements a slave-only I²C interface with fixed 4-bit device code '1010' and three don't-care address bits, enabling up to eight devices on one bus. Its internal address pointer auto-increments during sequential reads and retains position after byte writes.
It uses on-chip high-voltage generation for EEPROM programming, includes VCC threshold detection (3.8V nominal) to inhibit writes during undervoltage, and relies on acknowledge polling - not timeout-based waiting - to detect write cycle completion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 128-bit (16 × 8) EEPROM array - sufficient for compact ID strings or single-sensor calibration coefficients without external memory overhead. |
| Supply voltage | 4.5V to 5.5V only - mandates stable 5V rail; incompatible with 3.3V or mixed-voltage I²C buses unless level-shifted. |
| Temperature range | −40°C to +125°C (Automotive E grade) - qualified for under-hood or industrial control environments requiring extended thermal reliability. |
| I²C clock speed | Up to 400 kHz - supports fast configuration loading in production test or boot-time initialization sequences. |
| Write endurance | 1 million erase/write cycles - enables field-updatable calibration tables with multi-year service life under frequent reprogramming. |
| Data retention | 200 years at +85°C - ensures permanent storage integrity across product lifecycle without refresh logic. |
| Standby current | 100 nA typical - minimizes quiescent power draw in always-on battery-backed modules or sleep-mode subsystems. |
Pinout & Package
24C00T/ST is supplied in 5-pin SOT-23 package (Microchip drawing C04-028D), with pin 1 as SCL, pin 2 as VSS, pin 3 as SDA, pin 4 as NC, and pin 5 as VCC. The NC pin is internally unconnected and must be left floating or tied to ground per layout best practice.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCL (Pin 1) | Serial Clock input | Asynchronous master-controlled timing signal; requires external pull-up; edge-sensitive for Start/Stop detection. |
| VSS (Pin 2) | Ground reference | Primary return path for all internal circuitry and I/O leakage; must connect to system ground plane with low impedance. |
| SDA (Pin 3) | Bidirectional open-drain data line | Carries address, command, and data; requires external pull-up (2 kΩ typical for 400 kHz); shares bus with other I²C slaves. |
| NC (Pin 4) | No-connect terminal | Internally unconnected; may be left floating or grounded - no functional impact, but grounding improves mechanical stability. |
| VCC (Pin 5) | Positive supply input | Accepts only 4.5V–5.5V; internal UVLO disables write operations below 3.8V to prevent corruption during brownout. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs on SCL/SDA | 0.05×VCC hysteresis - rejects sub-50 ns noise spikes on noisy PCBs or long traces without external filtering. |
| Output slope control | Controlled SDA fall time (250 ns max) - eliminates ground bounce and EMI during bus transitions in dense layouts. |
| Self-timed write cycle | 3 ms typical / 4 ms max - removes need for software delay loops; status determined via ACK polling instead of fixed wait. |
| ESD protection | >4000 V HBM - withstands handling and board-level ESD events without latch-up or parametric shift. |
| Pb-free & RoHS compliance | JEDEC-standard matte tin finish - meets global environmental regulations and supports lead-free reflow profiles (peak 260°C). |
Applications
| Automotive Sensor Calibration | Industrial PLC Configuration Storage |
|---|---|
Use Scenario: Storing factory-trimmed offset/gain values for pressure or temperature sensors mounted in engine compartments. IC Role / Device Role / Timing Role: Nonvolatile parameter register accessed once at power-up via I²C; no runtime writes required after initial calibration. Use Value: Enables plug-and-play sensor replacement without host MCU reprogramming; leverages 125°C rating and 200-year data retention. |
Use Scenario: Holding user-defined I/O mapping and alarm thresholds in modular programmable logic controllers. IC Role / Device Role / Timing Role: Slave-configurable memory holding persistent settings updated only during commissioning or maintenance mode. Use Value: Survives full power cycles and brownouts; 1M endurance supports field updates over 10+ years of operation. |
| Medical Device Serial Numbering | Consumer Appliance Firmware ID |
Use Scenario: Embedding unique UDI (Unique Device Identifier) and regulatory compliance codes into portable diagnostic equipment. IC Role / Device Role / Timing Role: Read-only identity store accessed during boot verification; never rewritten in field use. Use Value: Meets FDA UDI requirements with tamper-resistant, traceable storage; 100 nA standby preserves battery life in portable units. |
Use Scenario: Storing version-critical bootloader flags and regional feature enable bits in smart home appliances. IC Role / Device Role / Timing Role: Boot-time configuration loader that selects firmware partition or UI language based on stored bits. Use Value: Allows single hardware SKU to support global variants; 400 kHz I²C enables fast readout before display initialization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA00T/ST | 1.8V–5.5V supply range; lower VCC min enables direct connection to 1.8V/3.3V MCUs; 100 nA standby identical. | Preferred for battery-powered or mixed-voltage designs where 5V rail is unavailable; not rated for 125°C operation. | Select when system VCC ≤ 4.5V or ambient temperature stays ≤ 85°C; verify I²C pull-up compatibility with lower VCC. |
| AT24C01C-SSHM-T | 1K-bit capacity (8× larger), same 4.5V–5.5V range and −40°C to +125°C rating; identical SOT-23-5 pinout and I²C protocol. | Used where future expansion of stored data is anticipated (e.g., multi-sensor calibration or firmware metadata). | Drop-in replacement if board layout reserves space for larger EEPROM; no PCB change needed, but firmware must handle 1K addressing. |
Compared with 24C00T/ST, the 24AA00T/ST offers broader voltage flexibility at the cost of automotive thermal qualification, while the AT24C01C-SSHM-T provides scalable memory headroom with identical packaging and temperature capability - making it suitable for forward-compatible designs requiring minimal layout revision.
Availability
24C00T/ST is available at Aetrix Electronics and suitable for automotive sensor calibration, industrial PLC configuration storage, medical device serial numbering, and consumer appliance firmware ID applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for 24C00T/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 infrastructure.
The 24C00T/ST belongs to Microchip's legacy 24XX00 family of ultra-low-power serial EEPROMs, engineered specifically for cost-sensitive, space-constrained applications needing reliable nonvolatile storage in harsh thermal environments.
FAQ
What is the minimum operating voltage for the 24C00T/ST?
The 24C00T/ST requires a strict 4.5V to 5.5V supply range. Unlike the 24AA00 or 24LC00 variants, it does not operate below 4.5V. Its internal voltage detector disables write operations below 3.8V to prevent data corruption during brownout conditions - a safeguard confirmed in DS20001178J Section 6.1.
Does the 24C00T/ST support standard I²C addressing?
Yes, the 24C00T/ST uses the standard 7-bit I²C slave address format with device code '1010' followed by three don't-care bits, allowing up to eight devices on a single bus. The R/W bit determines operation direction, and the device responds only when its full 7-bit address matches - as specified in DS20001178J Section 5.0.
How is write completion detected for the 24C00T/ST?
Write completion is detected via acknowledge polling: after issuing a Stop condition, the host sends a repeated Start + control byte (R/W = 0); the 24C00T/ST returns an ACK only when the internal 3 ms write cycle finishes. This method avoids fixed delays and maximizes bus efficiency - detailed in DS20001178J Section 7.0.
Is the NC pin on the 24C00T/ST required to be grounded?
No, Pin 4 (NC) on the 24C00T/ST is internally unconnected. Microchip's datasheet permits leaving it floating or tying it to ground for mechanical stability. Neither choice affects electrical functionality, but grounding may improve solder joint reliability in high-vibration environments per DS20001178J Page 4.
What package type is used for the 24C00T/ST?
The 24C00T/ST is exclusively offered in the 5-pin SOT-23 package (Microchip drawing C04-028D), with 2.80 mm length, 1.60 mm width, and 1.30 mm height. This compact footprint supports high-density PCB layouts and automated placement - confirmed in DS20001178J Section 9.1 and Package Marking Table.
24C00T/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:
- Obsolete
- 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:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
24C00T/ST FAQ
1.How can I place an order for 24C00T/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for 24C00T/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 24C00T/ST reliable?
The price and inventory of 24C00T/ST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24C00T/ST is usually 5 days.
3.What payment methods are accepted for 24C00T/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24C00T/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24C00T/ST?
24C00T/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24C00T/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 24C00T/ST?
For technical support, including 24C00T/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24C00T/ST requirements.
6.How does Aetrix verify that 24C00T/ST is sourced from the original manufacturer or authorized distributors?
All 24C00T/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 24C00T/ST meets industry standards.
7.What is the process for return or replacement of 24C00T/ST?
All 24C00T/ST units undergo pre-shipment inspection (PSI). If there is an issue with 24C00T/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 24C00T/ST part is unused and in its original packaging.
Return procedure for 24C00T/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24C00T/ST Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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AT24C02C-SSHM-T
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24LC01BT-I/OT
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24AA02UIDT-I/OT
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AT24C08C-STUM-T
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