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Microchip Technology 24C00T/OT
- Part No.:
- 24C00T/OT
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- SC-74A, SOT-753
- Datasheet:
-
24C00T/OT.pdf
- Description:
- IC EEPROM 128BIT I2C SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,168
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Product details
Overview
24C00T/OT 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 traceability. It operates at 4.5–5.5 V, supports 100 kHz and 400 kHz clock rates, delivers typical read current of 500 µA, and offers >1 million erase/write cycles with >200 years data retention. Its 5-lead SOT-23 package enables compact integration in automotive and industrial control modules.
For engineers reviewing the 24C00T/OT datasheet, 24C00T/OT pinout, 24C00T/OT application, or 24C00T/OT equivalent, key selection considerations include its 4.5–5.5 V supply range, automotive-grade temperature support (−40°C to +125°C), I²C bus timing compliance, and SOT-23 footprint compatibility with board-level space constraints and thermal requirements.
Technical Context
The 24C00T/OT implements a slave-only I²C interface with fixed 7-bit address (1010xxx) and R/W bit control, supporting byte write, current address read, random read, and sequential read operations. Its internal address pointer auto-increments during reads, and it uses Schmitt-trigger inputs with spike suppression (≤50 ns) for noise immunity on noisy buses.
Write operations are self-timed with typical 3 ms page write time and built-in VCC threshold detection (3.8 V nominal) that disables programming if supply drops below specification. Acknowledge polling is supported to detect write completion without fixed delays, enabling efficient bus utilization in real-time systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 128-bit (16 × 8) EEPROM array - sufficient for small ID strings, calibration offsets, or firmware revision flags without over-provisioning. |
| Supply voltage | 4.5 V to 5.5 V - matches standard 5 V logic rails and automotive battery-sensed systems; excludes lower-voltage variants like 24AA00. |
| Temperature range | −40°C to +125°C (Automotive E grade) - qualified for under-hood and powertrain control unit environments. |
| I²C clock rate | Up to 400 kHz - enables faster configuration writes vs. 100 kHz legacy mode, reducing boot-time latency in host-initiated setup. |
| Write endurance | 1 million erase/write cycles - supports frequent field updates (e.g., odometer, error logs) over full product lifetime. |
| Data retention | >200 years at +25°C - ensures long-term integrity of factory-programmed identifiers and calibration coefficients across product lifecycle. |
| Standby current | ≤1 µA max - minimizes quiescent drain in always-on modules such as CAN gateway wake-up circuits. |
Pinout & Package
24C00T/OT is housed in a 5-lead SOT-23 package (Microchip drawing C04-091D [OT]), with pin 1 designated as SCL, pin 2 as VSS, pin 3 as SDA, pin 4 as NC (no connect), and pin 5 as VCC. The NC pin provides layout flexibility and avoids unintended shorts in high-density routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCL (Pin 1) | Serial Clock input | Master-generated synchronous timing signal; Schmitt-triggered to reject sub-50 ns noise spikes on shared bus lines. |
| VSS (Pin 2) | Ground reference | Return path for all internal logic and I/O; must be low-impedance to maintain noise margin during SDA transitions. |
| SDA (Pin 3) | Bidirectional open-drain data line | Requires external pull-up (2 kΩ typical for 400 kHz); changes only during SCL low except for Start/Stop signaling. |
| NC (Pin 4) | No-connect terminal | Internally unconnected; may be left floating or tied to ground for mechanical stability-no electrical function. |
| VCC (Pin 5) | Positive supply | Accepts 4.5–5.5 V; internal VCC monitor disables write if voltage falls below 3.8 V to prevent corrupted data writes. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Input hysteresis ≥0.05×VCC eliminates false triggering from bus noise, enabling reliable operation in electrically harsh automotive environments. |
| Output slope control | Controlled SDA fall time (20+0.1×CB ns) prevents ground bounce and signal integrity issues on PCBs with high trace capacitance. |
| Factory programming option | Allows pre-loading of unique serial numbers or calibration constants at wafer/test stage, reducing post-manufacturing programming steps. |
| ESD protection | ≥4000 V HBM on all pins - meets AEC-Q100 stress requirements for automotive electronics handling and assembly. |
| I²C bus compatibility | Fully compliant with Philips Semiconductors (NXP) I²C-bus specification Rev. 2.1 - interoperable with standard microcontroller I²C peripherals without protocol translation. |
Applications
| Automotive Body Control Module | Industrial Sensor Node |
|---|---|
Use Scenario: Storing vehicle-specific configuration (e.g., mirror position presets, lighting profiles) in door module ECUs. IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed via I²C during power-up initialization and runtime reconfiguration. Use Value: Enables plug-and-play replacement without dealer reprogramming; leverages −40°C to +125°C rating for under-dash mounting. | Use Scenario: Retaining calibrated offset/gain values for analog sensor front-ends in predictive maintenance gateways. IC Role / Device Role / Timing Role: Persistent memory for sensor compensation coefficients updated during factory calibration or field recalibration. Use Value: Maintains accuracy over 200+ years; 1M endurance supports periodic recalibration in deployed assets. |
| Smart Meter Firmware Identifier | Medical Diagnostic Device Serial Tag |
Use Scenario: Holding firmware version, hardware revision, and cryptographic key identifiers in utility smart meters exposed to wide ambient swings. IC Role / Device Role / Timing Role: Read-only identity store queried at boot; write-once during manufacturing or secure OTA update. Use Value: 4.5–5.5 V operation aligns with meter's regulated 5 V rail; >200-year retention ensures traceability across multi-decade deployments. | Use Scenario: Storing FDA-mandated unique device identifier (UDI) and production lot code in portable diagnostic instruments. IC Role / Device Role / Timing Role: Secure, tamper-resistant serial number storage accessible via host MCU I²C interface during regulatory audit mode. Use Value: Factory-programmable option eliminates post-solder programming; RoHS/Pb-free compliance meets medical supply chain mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24C00-I/OT | Same 5-lead SOT-23 package and 128-bit capacity, but rated for Industrial (−40°C to +85°C) not Automotive temperature range. | Lacks AEC-Q100 qualification; unsuitable for under-hood or engine bay use where +125°C ambient occurs. | Select only for cost-sensitive industrial controls where extended temperature is not required. |
| AT24C01C-SSHM-T | 1 Kbit (128 × 8) capacity, same 5-lead SOT-23, 1.7–5.5 V supply, and −40°C to +85°C rating; supports 1 MHz I²C. | Higher density and wider voltage range, but no automotive temp grade; different device address (1010000x vs. 1010xxx). | Choose when more storage is needed and automotive qualification is unnecessary; verify address conflict in multi-device I²C systems. |
Compared with 24C00T/OT, the 24C00-I/OT sacrifices automotive temperature capability for identical pinout and function, while AT24C01C-SSHM-T trades qualification for higher density and speed-neither is drop-in compatible due to temp grade or addressing differences.
Availability
24C00T/OT is available at Aetrix Electronics and suitable for automotive body control units, industrial sensor calibration storage, and medical device UDI tagging requiring stable component supply across extended product lifecycles.
Supply support for 24C00T/OT 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 24C00 series belongs to Microchip's legacy serial EEPROM product line, engineered specifically for cost-effective, low-pin-count nonvolatile storage in automotive and industrial applications where reliability and qualification matter more than density.
FAQ
What is the maximum I²C clock frequency supported by the 24C00T/OT?
The 24C00T/OT supports up to 400 kHz I²C clock frequency when operated within its specified 4.5–5.5 V supply range and −40°C to +125°C temperature envelope. This is confirmed in Table 1-2 of the DS20001178J datasheet under AC Characteristics for the Automotive (E) temperature grade. Operation above 400 kHz is not guaranteed and may result in timing violations or communication failure.
Does the 24C00T/OT require an external pull-up resistor on the SDA line?
Yes, the 24C00T/OT requires an external pull-up resistor on the SDA line because its SDA pin is open-drain. The datasheet recommends 2 kΩ for 400 kHz operation and 10 kΩ for 100 kHz. Without this resistor, the SDA line cannot transition high, preventing proper I²C acknowledge signaling and data transmission. The 24C00T/OT itself does not provide internal pull-ups.
Can the 24C00T/OT be used in place of the 24AA00 or 24LC00 in an existing design?
No-the 24C00T/OT is not a direct replacement for the 24AA00 or 24LC00 due to incompatible supply voltage ranges: 24C00T/OT requires 4.5–5.5 V, whereas 24AA00 operates down to 1.8 V and 24LC00 down to 2.5 V. Substituting 24C00T/OT into a 3.3 V system will cause functional failure. Always verify VCC compatibility before interchange.
What does the "T/OT" suffix indicate in the 24C00T/OT part number?
The "T/OT" suffix in 24C00T/OT specifies the package type: "OT" denotes the 5-lead SOT-23 package per Microchip's packaging nomenclature (Drawing C04-091D), and the "T" indicates tape-and-reel packaging format for automated assembly. This distinguishes it from PDIP, SOIC, or TSSOP variants of the same 24C00 base part.
Is factory programming available for the 24C00T/OT, and how is it implemented?
Yes, factory programming is available for the 24C00T/OT. Microchip offers pre-programming of user-defined data (e.g., serial numbers, calibration constants) during final test at wafer or package level. This is implemented using standard I²C commands prior to sealing, and programmed data persists through all subsequent power cycles and environmental stresses-enabling zero-touch configuration in end equipment.
24C00T/OT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- 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:
- SOT-23-5
24C00T/OT FAQ
1.How can I place an order for 24C00T/OT through Aetrix?
Please submit a Request for Quotation (RFQ) for 24C00T/OT 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/OT reliable?
The price and inventory of 24C00T/OT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24C00T/OT is usually 5 days.
3.What payment methods are accepted for 24C00T/OT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24C00T/OT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24C00T/OT?
24C00T/OT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24C00T/OT 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/OT?
For technical support, including 24C00T/OT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24C00T/OT requirements.
6.How does Aetrix verify that 24C00T/OT is sourced from the original manufacturer or authorized distributors?
All 24C00T/OT 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/OT meets industry standards.
7.What is the process for return or replacement of 24C00T/OT?
All 24C00T/OT units undergo pre-shipment inspection (PSI). If there is an issue with 24C00T/OT, 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/OT part is unused and in its original packaging.
Return procedure for 24C00T/OT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24C00T/OT 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
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