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Microchip Technology 24C01CT-I/MNY
- Part No.:
- 24C01CT-I/MNY
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
24C01CT-I/MNY.pdf
- Description:
- IC EEPROM 1KBIT I2C 400KHZ 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,173
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Product details
Overview
24C01CT-I/MNY from Microchip Technology is a 1 Kbit (128 × 8) I²C-compatible serial EEPROM operating from 4.5V to 5.5V, featuring 16-byte page write buffer, 1 ms max. write cycle time, and industrial temperature range (–40°C to +85°C). It uses Schmitt-trigger inputs and slope-controlled outputs for noise immunity on shared buses in embedded control modules.
For engineers reviewing the 24C01CT-I/MNY datasheet, 24C01CT-I/MNY pinout, 24C01CT-I/MNY application, or 24C01CT-I/MNY equivalent, key selection criteria include I²C clock compatibility (100/400 kHz), standby current ≤5 µA, page write capability, A0–A2 address select flexibility, and MNY package footprint (8-pin 2×3 DFN).
Technical Context
The 24C01CT-I/MNY implements a standard two-wire I²C slave interface with fixed 7-bit device address prefix '1010', where A2–A0 pins determine the three LSBs of the slave address-enabling up to eight devices on one bus. Its internal address pointer auto-increments during sequential reads and wraps at 0x7F.
Write operations support both byte and page modes; page writes are limited to 16-byte boundaries aligned to 0x00, 0x10, ..., 0x70 addresses. During internal erase/write cycles, the device inhibits ACK responses-enabling reliable acknowledge polling for timing-critical firmware.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 1 Kbit (128 × 8-bit array), sufficient for calibration data, configuration registers, or small firmware patches |
| Interface | I²C-compatible 2-wire serial bus, supports standard-mode (100 kHz) and fast-mode (400 kHz) timing |
| Page write buffer | 16 bytes per page-reduces host MCU overhead vs. byte-by-byte writes and improves write throughput |
| Write cycle time | ≤1 ms for byte or page writes-enables deterministic latency in real-time logging or parameter update sequences |
| Supply voltage | 4.5 V to 5.5 V-compatible with legacy 5 V logic systems and industrial power rails |
| Standby current | ≤5 µA at VCC = 5.5 V-critical for battery-backed or low-power always-on subsystems |
| Data retention | >200 years at +25°C-ensures long-term reliability in unattended equipment without refresh |
| Endurance | >1 million erase/write cycles-supports frequent updates in metering, diagnostics, or field-service applications |
Pinout & Package
24C01CT-I/MNY is housed in an 8-pin 2×3 mm DFN (Dual Flat No-lead) package with wettable flank leads, RoHS-compliant and Pb-free. Pin 1 is marked by laser indentation; exposed thermal pad (Pin 5) must be soldered to PCB ground plane for thermal stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Chip Select input | LSB of 3-bit hardware address; sets bit A0 of slave address (1010 A2 A1 A0 R/W); tied high/low to configure bus position |
| A1 | Chip Select input | Mid-bit of 3-bit hardware address; enables up to eight devices on same I²C bus without software reconfiguration |
| A2 | Chip Select input | MSB of 3-bit hardware address; required for full 8-device cascading; not present in SOT-23 variant |
| VSS | Ground reference | Primary return path for all internal logic and I/O; must be low-impedance connection to system ground plane |
| SDA | Serial Data bidirectional | Open-drain I²C data line requiring external pull-up (2 kΩ for 400 kHz); changes only during SCL low except for START/STOP |
| SCL | Serial Clock input | Master-generated clock synchronizing all transfers; Schmitt-trigger input rejects noise spikes >50 ns |
| Test | Factory test terminal | No functional role in application; may be left floating, tied high, or tied low-no effect on operation |
| VCC | Power supply | +4.5 V to +5.5 V supply; internal VCC threshold detector disables writes below ~3.8 V to prevent corruption |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs on SDA/SCL | Input hysteresis ≥0.05×VCC eliminates false triggering from EMI or ground bounce in noisy industrial environments |
| Output slope control | Controlled rise/fall times prevent simultaneous switching noise (SSN) that could disrupt adjacent digital signals |
| Self-timed erase/write cycle | No external timing components needed; internal HV generator and state machine guarantee completion within 1 ms |
| ESD protection | >4000 V HBM on all pins-meets IEC 61000-4-2 Level 3 for robustness in handling and assembly |
| Factory programming option | Pre-load initial calibration tables or security keys at wafer/test stage-reduces post-solder programming steps |
Applications
| Industrial Sensor Calibration | Smart Meter Configuration Storage |
|---|---|
Use Scenario: Storing factory-trimmed offset/gain coefficients and linearization tables for analog sensor front-ends in PLC I/O modules. IC Role / Device Role / Timing Role: Nonvolatile configuration store accessed via I²C during power-up initialization and field recalibration. Use Value: Enables plug-and-play sensor replacement with zero manual setup; 1 ms write time allows fast recalibration during maintenance windows. | Use Scenario: Holding tariff schedules, billing counters, tamper logs, and communication parameters in electricity/water meters. IC Role / Device Role / Timing Role: Secure, low-power data logger interfaced to metrology SoC over I²C; retains data across mains outages. Use Value: 5 µA standby current extends backup battery life beyond 10 years; >1M endurance supports daily log writes for 27+ years. |
| Embedded Controller Bootloader Settings | Medical Device Usage Logs |
Use Scenario: Storing bootloader configuration flags (e.g., safe mode enable, firmware rollback version, debug port lock). IC Role / Device Role / Timing Role: Trusted configuration vault read early in boot sequence; write-protected via WP pin when active. Use Value: Prevents accidental corruption during firmware updates; page write buffer accelerates multi-parameter save after user configuration. | Use Scenario: Recording sterilization cycles, usage hours, error events, and calibration timestamps in portable diagnostic tools. IC Role / Device Role / Timing Role: Tamper-evident audit trail storage with guaranteed data integrity across power cycles and thermal stress. Use Value: >200-year data retention satisfies FDA 21 CFR Part 11 long-term recordkeeping requirements without periodic refresh. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C01D-SSHM-T | Same 1 Kbit capacity, 1.7–5.5 V supply, but supports 1 MHz I²C; 5 ms max. write time; SOIC-8 package | Wider voltage range suits mixed-voltage systems; slower write limits high-frequency logging | Choose for 3.3 V/5 V dual-rail designs needing faster clock rates-but verify layout compatibility with SOIC-8 footprint |
| BR24G01FJ-WE2 | 1 Kbit, 1.6–5.5 V, 400 kHz I²C, 5 ms write time; TSSOP-8 package; built-in write protect | Lower VCC min enables direct connection to 1.8 V MCUs; no A0–A2 pins-only single-device per bus | Prefer for ultra-low-voltage embedded systems where bus expansion is unnecessary and write protection is mandatory |
Compared with AT24C01D-SSHM-T and BR24G01FJ-WE2, the 24C01CT-I/MNY offers optimal balance of 5 V compatibility, 1 ms write speed, and 3-pin addressability in space-constrained DFN-making it ideal for industrial controllers where bus density and deterministic latency matter most.
Availability
24C01CT-I/MNY is available at Aetrix Electronics and suitable for industrial sensor calibration, smart meter configuration storage, and embedded controller bootloader settings requiring stable component supply across extended product lifecycles.
Supply support for 24C01CT-I/MNY 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 24C01C family was designed specifically for cost-sensitive, space-constrained embedded systems needing reliable nonvolatile storage with minimal I²C bus overhead and robust industrial-grade operation.
FAQ
What is the maximum I²C clock frequency supported by the 24C01CT-I/MNY?
The 24C01CT-I/MNY supports I²C standard-mode up to 100 kHz and fast-mode up to 400 kHz. Its AC characteristics-including THIGH, TLOW, and TSU:DAT-are fully specified for both speeds across the industrial temperature range (–40°C to +85°C). The device does not support high-speed mode (3.4 MHz) or SMBus-specific timeouts.
Does the 24C01CT-I/MNY have hardware write protection?
The 24C01CT-I/MNY does not include a dedicated Write Protect (WP) pin. Unlike later variants such as the 24C01C-I/P or 24C01CT-I/SM, this MNY-package variant omits the WP terminal. Protection must be implemented externally via I²C command locking or system-level access control-not through a hardware pin.
How many 24C01CT-I/MNY devices can be connected on a single I²C bus?
Up to eight 24C01CT-I/MNY devices can share one I²C bus using unique combinations of A0, A1, and A2 pins. Each pin must be hard-wired to VCC or VSS to set its logic level. The 24C01CT-I/MNY's DFN package includes all three address pins, enabling full 3-bit addressing-unlike the SOT-23 variant which lacks A2.
What is the purpose of the Test pin on the 24C01CT-I/MNY?
The Test pin on the 24C01CT-I/MNY is reserved exclusively for factory wafer sort and final test. It has no defined function in normal operation and may be left floating, tied to VCC, or tied to VSS without affecting device behavior. No timing, electrical, or functional specification applies to this pin in application circuits.
Is the 24C01CT-I/MNY compatible with 3.3 V I²C systems?
No-the 24C01CT-I/MNY is rated for 4.5 V to 5.5 V operation only. Its VIH minimum is 0.7×VCC (≥3.15 V at VCC = 4.5 V), and VIL maximum is 0.3×VCC (≤1.65 V). Direct connection to 3.3 V I²C masters risks undervoltage logic recognition and violates Absolute Maximum Ratings. Level-shifting circuitry is required for interoperability.
24C01CT-I/MNY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 1Kbit
- Memory Organization:
- 128 x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 1ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN (2x3)
24C01CT-I/MNY FAQ
1.How can I place an order for 24C01CT-I/MNY through Aetrix?
Please submit a Request for Quotation (RFQ) for 24C01CT-I/MNY 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 24C01CT-I/MNY reliable?
The price and inventory of 24C01CT-I/MNY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24C01CT-I/MNY is usually 5 days.
3.What payment methods are accepted for 24C01CT-I/MNY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24C01CT-I/MNY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24C01CT-I/MNY?
24C01CT-I/MNY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24C01CT-I/MNY 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 24C01CT-I/MNY?
For technical support, including 24C01CT-I/MNY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24C01CT-I/MNY requirements.
6.How does Aetrix verify that 24C01CT-I/MNY is sourced from the original manufacturer or authorized distributors?
All 24C01CT-I/MNY 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 24C01CT-I/MNY meets industry standards.
7.What is the process for return or replacement of 24C01CT-I/MNY?
All 24C01CT-I/MNY units undergo pre-shipment inspection (PSI). If there is an issue with 24C01CT-I/MNY, 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 24C01CT-I/MNY part is unused and in its original packaging.
Return procedure for 24C01CT-I/MNY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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