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Microchip Technology 24C00/ST
- Part No.:
- 24C00/ST
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
24C00/ST.pdf
- Description:
- IC EEPROM 128BIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,688
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Product details
Overview
24C00/ST from Microchip Technology Inc. is a 128-bit (16 × 8) I²C-compatible serial EEPROM designed for nonvolatile storage of calibration data, device IDs, and manufacturing parameters in space-constrained industrial and automotive systems. It operates at 4.5–5.5 V, supports 100 kHz/400 kHz clock rates, features Schmitt-trigger inputs, and delivers typical standby current of 100 nA and read current of 500 µA.
For engineers reviewing the 24C00/ST datasheet, 24C00/ST pinout, 24C00/ST application, or 24C00/ST equivalent, this page provides verified electrical specs, package mapping, I²C timing compliance, endurance (1 million cycles), and real-world use context for embedded system integration and BOM validation.
Technical Context
The 24C00/ST functions exclusively 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 hardware configuration. Its internal address pointer auto-increments during sequential reads and retains position after byte writes.
It implements self-timed erase/write cycles with VCC threshold detection (3.8 V nominal) to prevent corruption during brown-out conditions, and uses open-drain SDA/SCL with integrated noise suppression via Schmitt triggers and input filtering (50 ns spike rejection).
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 | 4.5 V to 5.5 V - compatible with standard 5 V logic rails and automotive supply tolerances; not functional below 4.5 V. |
| Interface | I²C bus (2-wire serial) - requires only two bidirectional signals and pull-up resistors; no additional protocol controller needed. |
| Write cycle time | Typical 3 ms, max 4 ms - defines minimum interval between write commands; supports ACK polling for deterministic timing control. |
| Endurance & retention | 1 million erase/write cycles and >200 years data retention - validated for long-life deployments in unattended equipment. |
| Temperature range | -40°C to +125°C (Automotive E grade) - qualified for under-hood and powertrain control module environments. |
| ESD protection | >4000 V HBM - ensures robustness against handling and board-level transients in production and field service. |
Pinout & Package
24C00/ST is available in 5-pin SOT-23 and 8-pin PDIP/SOIC/TSSOP/DFN/TDFN packages. The SOT-23 variant uses compact footprint ideal for PCB area-sensitive designs; all variants share identical pin function mapping except for NC pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCL | Serial Clock input | Asynchronous edge-triggered clock for I²C synchronization; must be driven by master with rise/fall time ≤300 ns (VCC = 5 V). |
| SDA | Serial Data bidirectional I/O | Open-drain output requiring external pull-up; carries address, command, and data; changes only during SCL low except for START/STOP. |
| VCC | Positive supply | 4.5–5.5 V DC input; powers internal HV generator for EEPROM programming; threshold detector disables writes if voltage drops below 3.8 V. |
| VSS | Ground reference | Return path for all internal circuitry; must be low-impedance and tied directly to system ground plane. |
| NC | No-connect terminal | Internally unconnected; must remain floating - no routing, termination, or tie to VCC/VSS permitted per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs on SCL/SDA | Enables reliable operation on noisy buses by rejecting sub-50 ns spikes and providing ≥5% VCC hysteresis. |
| Output slope control | Prevents ground bounce during SDA transitions by limiting dI/dt, eliminating need for external series resistors. |
| Factory programming option | Allows pre-loading of immutable device identifiers or security keys before shipment - reduces post-manufacturing programming steps. |
| Pb-free and RoHS compliant | Meets EU Directive 2011/65/EU; packaging uses matte tin (Sn) finish with JEDEC-compliant marking on reel labels. |
| Page write capability | Supports multi-byte writes within same 16-byte page boundary - reduces I²C transaction overhead versus single-byte writes. |
Applications
| Industrial Sensor Calibration | Automotive ECU Configuration |
|---|---|
|
Use Scenario: Storing temperature-compensation coefficients and sensor offset values in factory-calibrated pressure sensors. IC Role / Device Role / Timing Role: Nonvolatile memory slave holding static calibration data accessed once per power-on reset via I²C. Use Value: Eliminates need for external calibration EEPROM; 128-bit capacity matches typical coefficient sets; 125°C rating ensures reliability near engine bays. |
Use Scenario: Retaining vehicle-specific configuration flags (e.g., transmission type, axle ratio) in body control modules. IC Role / Device Role / Timing Role: I²C-configurable parameter store updated only during dealer reprogramming; accessed at boot by MCU. Use Value: Automotive-grade (-40°C to +125°C) operation and 1M-cycle endurance support lifetime updates; SOT-23 package fits tight ECU layouts. |
| Consumer Appliance ID Storage | Medical Device Serial Tracking |
|
Use Scenario: Embedding unique model number, firmware version, and manufacturing date in smart home thermostats. IC Role / Device Role / Timing Role: Read-only memory accessed during initialization to populate UI and enable feature gating. Use Value: 100 nA standby current extends battery life in backup-powered units; I²C interface simplifies MCU integration with existing bus infrastructure. |
Use Scenario: Recording device serial number, calibration timestamp, and regulatory compliance codes in portable diagnostic tools. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage element written once during final test and read throughout product lifecycle. Use Value: >200-year data retention meets FDA traceability requirements; ESD-hardened design withstands clinical environment handling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24LC00-I/P | Wider VCC range (2.5–5.5 V); Industrial temp only (-40°C to +85°C); identical 128-bit capacity and I²C protocol. | Not rated for automotive ambient temperatures; suitable for cost-sensitive consumer or industrial control where 5 V rail is unstable. | Select when 2.5 V operation is required and automotive qualification is unnecessary; verify SCL timing margins at lower VCC. |
| AT24C01A-PU | 1 Kbit (128 × 8) capacity; same 1.8–5.5 V range and I²C interface; 1 million cycle endurance; Pb-free SOIC-8 package. | Offers 8× more memory; lacks factory programming option; different device address (1010000x vs. 1010xxx0). | Choose when future firmware expansion or multi-parameter logging is anticipated; requires address decoding update in host firmware. |
Compared with 24C00/ST, the 24LC00-I/P enables lower-voltage operation but sacrifices automotive qualification, while the AT24C01A-PU trades pin compatibility for greater storage - both require firmware or layout review before substitution.
Availability
24C00/ST is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive ECU configuration, and medical device serial tracking requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 24C00/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 24C00/ST belongs to Microchip's legacy 24XX00 family of ultra-low-power serial EEPROMs, engineered specifically for minimal-footprint, high-reliability nonvolatile storage in automotive and industrial control systems.
FAQ
What is the maximum clock frequency supported by the 24C00/ST?
The 24C00/ST supports I²C clock frequencies up to 400 kHz when operated at 4.5–5.5 V. At this rate, timing parameters such as THIGH (min 600 ns) and TLOW (min 1300 ns) must be strictly maintained. The device does not support standard-mode Fast-mode Plus (1 MHz) or higher rates.
Can the 24C00/ST operate from a 3.3 V supply?
No. The 24C00/ST is specified only for 4.5–5.5 V operation. Attempting to power it from 3.3 V will prevent internal charge pump activation and result in failed write cycles or unpredictable behavior. For 3.3 V systems, consider the 24AA00 or 24LC00 variants instead.
Does the 24C00/ST have built-in write protection?
The 24C00/ST has no hardware write-protect pin or software lock bits. Write protection must be implemented externally via I²C bus arbitration or host MCU firmware control. The device will accept write commands whenever not busy, including during unintended bus activity.
How many devices can share the same I²C bus with the 24C00/ST?
Up to eight 24C00/ST devices can coexist on one I²C bus, as each uses a fixed 4-bit device code (1010) followed by three don't-care bits, yielding eight possible slave addresses (1010000x through 1010111x). Address collisions occur if other 24XX00-family devices use overlapping bits.
Is the 24C00/ST pin-compatible with the 24LC00 or 24AA00?
Yes - all three devices share identical pinouts across equivalent packages (e.g., 5-pin SOT-23 or 8-pin SOIC), including SCL, SDA, VCC, VSS, and NC assignments. However, voltage range, temperature grade, and internal VCC threshold differ, so direct substitution requires verification of system-level electrical and environmental constraints.
24C00/ST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- 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
24C00/ST FAQ
1.How can I place an order for 24C00/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for 24C00/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 24C00/ST reliable?
The price and inventory of 24C00/ST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24C00/ST is usually 5 days.
3.What payment methods are accepted for 24C00/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24C00/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24C00/ST?
24C00/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24C00/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 24C00/ST?
For technical support, including 24C00/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24C00/ST requirements.
6.How does Aetrix verify that 24C00/ST is sourced from the original manufacturer or authorized distributors?
All 24C00/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 24C00/ST meets industry standards.
7.What is the process for return or replacement of 24C00/ST?
All 24C00/ST units undergo pre-shipment inspection (PSI). If there is an issue with 24C00/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 24C00/ST part is unused and in its original packaging.
Return procedure for 24C00/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24C00/ST Tags
-
M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
Microchip Technology
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24LC01BT-I/OT
Microchip Technology
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M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
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AT24C04C-SSHM-T
Microchip Technology
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24LC01BT-I/SN
Microchip Technology
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24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
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