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Microchip Technology 24C01C-I/MS
- Part No.:
- 24C01C-I/MS
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
24C01C-I/MS.pdf
- Description:
- IC EEPROM 1KBIT I2C 400KHZ 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:605
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Product details
Overview
24C01C-I/MS 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 systems.
For engineers reviewing the 24C01C-I/MS datasheet, 24C01C-I/MS pinout, 24C01C-I/MS application, or 24C01C-I/MS equivalent, key selection criteria include I²C clock compatibility (100 kHz / 400 kHz), standby current ≤5 µA, page write capability, A0–A2 address configuration, and MSOP-8 package footprint with exposed pad option.
Technical Context
The 24C01C-I/MS implements a 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 and require explicit software management to avoid wraparound. Acknowledge polling is supported to detect write completion without fixed delay timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 1 Kbit (128 × 8 bits), organized as single block for contiguous addressing |
| Interface | I²C-compatible 2-wire serial bus, supports 100 kHz and 400 kHz clock rates |
| Supply voltage | 4.5V to 5.5V - compatible with standard 5V logic systems and tolerant of rail variation |
| Write cycle time | ≤1 ms for byte or page write - enables fast firmware parameter updates without blocking host CPU |
| Endurance | ≥1,000,000 erase/write cycles - suitable for logging, calibration storage, and field-configurable settings |
| Data retention | >200 years at +85°C - ensures long-term reliability in unattended industrial deployments |
| Standby current | ≤5 µA at VCC = 5.5V - critical for battery-backed or low-power sensor node applications |
Pinout & Package
24C01C-I/MS is packaged in an 8-pin MSOP (Mini Small Outline Package) with 3.0 mm × 3.0 mm body, 0.65 mm pitch, and exposed thermal pad (EP). Pin 1 is marked by laser indentation; pin 4 is VSS (ground), pin 8 is VCC (+4.5V to +5.5V).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Chip select input | LSB of 3-bit hardware address; sets bit A0 in slave address '1010 A2 A1 A0 R/W' |
| A1 | Chip select input | Mid-bit of 3-bit hardware address; enables multi-device bus expansion up to 8 units |
| A2 | Chip select input | MSB of 3-bit hardware address; must be hard-wired to VSS or VCC for deterministic addressing |
| VSS | Ground reference | Primary return path for all internal circuitry; requires low-impedance connection to system ground plane |
| SDA | Serial data bidirectional line | Open-drain I²C data line requiring external pull-up (2 kΩ for 400 kHz, 10 kΩ for 100 kHz) |
| SCL | Serial clock input | Master-generated clock synchronizing all data transfers; includes Schmitt trigger for noise rejection |
| Test | Factory test terminal | No functional role in application; may be left floating, tied high, or tied low without affecting operation |
| VCC | Power supply | Single 4.5–5.5V supply powering EEPROM core, interface logic, and HV generator for write operations |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs on SDA/SCL | Input hysteresis ≥0.05×VCC eliminates false triggering from bus noise or EMI in industrial environments |
| Output slope control | Controlled rise/fall times prevent ground bounce and signal integrity issues on shared PCB traces |
| Page write buffer (16 bytes) | Reduces I²C transaction overhead by up to 16× versus byte-write mode for bulk configuration storage |
| Self-timed erase/write cycle | Removes need for external timing components or host wait-state insertion - simplifies firmware design |
| ESD protection >4 kV | Meets IEC 61000-4-2 Level 2 requirements - enhances robustness during handling and system integration |
Applications
| Industrial Sensor Node | Smart Meter Calibration Storage |
|---|---|
Use Scenario: Nonvolatile storage of sensor offset, gain, and linearization coefficients in battery-powered environmental monitors. IC Role / Device Role / Timing Role: I²C slave EEPROM providing persistent configuration data accessible during cold start and firmware updates. Use Value: Enables field recalibration without reprogramming MCU flash; 5 µA standby current extends battery life beyond 10 years. |
Use Scenario: Storing metrology calibration constants, tariff tables, and tamper-event logs in ANSI C12.22-compliant electricity meters. IC Role / Device Role / Timing Role: Secure, endurance-rated memory for regulatory-critical parameters accessed via isolated I²C bus. Use Value: 1M-cycle endurance supports daily log writes over 27-year meter lifetime; >200-year data retention meets utility archival requirements. |
| PLC I/O Module Configuration | Medical Device Setup Profile |
Use Scenario: Retaining channel-specific scaling factors, alarm thresholds, and input filter settings across power cycles in modular programmable logic controllers. IC Role / Device Role / Timing Role: Cascadable I²C EEPROM supporting up to eight modules per backplane bus using A0–A2 address pins. Use Value: Eliminates manual DIP-switch configuration; allows hot-swap module identification and automatic parameter loading. |
Use Scenario: Storing user-selectable therapy profiles, safety limits, and calibration history in portable infusion pumps and diagnostic handhelds. IC Role / Device Role / Timing Role: Low-voltage EEPROM interfacing directly with 5V-tolerant microcontroller GPIOs under IEC 62304 Class B software control. Use Value: Factory-programmable option enables pre-loaded clinical configurations; RoHS/Pb-free compliance satisfies medical regulatory submissions. |
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 (Microchip) | Same 1 Kbit capacity and I²C interface, but SOIC-8 package; rated for industrial temp only; no Test pin | Lacks Test pin and MSOP-8 footprint; requires PCB redesign if replacing 24C01C-I/MS in space-constrained layouts | Select when board area permits SOIC-8 and Test pin functionality is unnecessary |
| ST24C01-WDT6-TR (STMicroelectronics) | 1 Kbit I²C EEPROM with identical 4.5–5.5V supply and 1 ms write time; TSSOP-8 package; no A2 pin in 6-lead variant | Compatible pinout for TSSOP-8 footprint; differs in address pin mapping (A2 not present in SOT-23 variant) | Choose for dual-sourcing flexibility in TSSOP-8 designs; verify A2 handling in multi-device bus configurations |
Compared with AT24C01D-SSHM-T and ST24C01-WDT6-TR, the 24C01C-I/MS uniquely offers MSOP-8 packaging with exposed pad for thermal performance, full A0–A2 addressability, and integrated Test pin - making it optimal for compact industrial controllers requiring cascaded EEPROM topology and thermal reliability.
Availability
24C01C-I/MS is available at Aetrix Electronics and suitable for industrial sensor nodes, smart meter calibration storage, and PLC I/O module configuration requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for 24C01C-I/MS 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 U.S.-based semiconductor company specializing in microcontrollers, analog devices, and nonvolatile memory solutions for embedded control applications.
The 24C01C belongs to Microchip's legacy I²C EEPROM product line, designed specifically for cost-sensitive, space-constrained industrial and automotive systems requiring reliable, low-power, and field-upgradable parameter storage.
FAQ
What is the maximum I²C clock frequency supported by the 24C01C-I/MS?
The 24C01C-I/MS supports I²C clock frequencies up to 400 kHz under industrial temperature conditions (–40°C to +85°C), with minimum high/low times of 600 ns and 1300 ns respectively. At 100 kHz, timing margins increase significantly, enabling robust operation on longer or noisier bus traces. The device does not support Fast-mode Plus (1 MHz) or higher rates.
Does the 24C01C-I/MS require external pull-up resistors on SDA and SCL lines?
Yes, the 24C01C-I/MS requires external pull-up resistors on both SDA and SCL lines because its I²C interface uses open-drain outputs. Recommended values are 10 kΩ for 100 kHz operation and 2 kΩ for 400 kHz operation, referenced to VCC. Incorrect pull-up strength can cause timing violations or bus lockup.
How many 24C01C-I/MS devices can be connected on the same I²C bus?
Up to eight 24C01C-I/MS devices can be connected on the same I²C bus using unique combinations of A0, A1, and A2 address pins. Each pin must be hard-wired to either VSS or VCC to define a 3-bit chip address. The SOT-23 variant supports only four devices due to missing A2 pin, but the MSOP-8 24C01C-I/MS fully supports all eight addresses.
What is the purpose of the Test pin on the 24C01C-I/MS?
The Test pin on the 24C01C-I/MS is reserved exclusively for factory wafer and package testing. It has no defined function in normal operation and may be left floating, tied to VCC, or tied to VSS without affecting device behavior. It must not be used for system-level signaling or monitoring in end applications.
Can the 24C01C-I/MS perform sequential reads across multiple pages?
No, the 24C01C-I/MS does not support sequential reads across page boundaries. Its internal address pointer increments within the 128-byte address space (0x00–0x7F) and rolls over from 0x7F to 0x00, but crossing a 16-byte page boundary during a multi-byte read will not trigger automatic page advance - the read continues linearly in the same physical page.
24C01C-I/MS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- 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-MSOP
24C01C-I/MS FAQ
1.How can I place an order for 24C01C-I/MS through Aetrix?
Please submit a Request for Quotation (RFQ) for 24C01C-I/MS 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 24C01C-I/MS reliable?
The price and inventory of 24C01C-I/MS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24C01C-I/MS is usually 5 days.
3.What payment methods are accepted for 24C01C-I/MS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24C01C-I/MS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24C01C-I/MS?
24C01C-I/MS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24C01C-I/MS 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 24C01C-I/MS?
For technical support, including 24C01C-I/MS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24C01C-I/MS requirements.
6.How does Aetrix verify that 24C01C-I/MS is sourced from the original manufacturer or authorized distributors?
All 24C01C-I/MS 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 24C01C-I/MS meets industry standards.
7.What is the process for return or replacement of 24C01C-I/MS?
All 24C01C-I/MS units undergo pre-shipment inspection (PSI). If there is an issue with 24C01C-I/MS, 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 24C01C-I/MS part is unused and in its original packaging.
Return procedure for 24C01C-I/MS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24C01C-I/MS Tags
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