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STMicroelectronics M24C64-RMN6TP
- Part No.:
- M24C64-RMN6TP
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
M24C64-RMN6TP.pdf
- Description:
- IC EEPROM 64KBIT I2C 1MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:12,302
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Product details
Overview
M24C64-RMN6TP from STMicroelectronics is a 64-Kbit I²C-compatible EEPROM organized as 8 K × 8 bits, operating from 1.7 V to 5.5 V over –40 °C to +85 °C, supporting 1 MHz / 400 kHz / 100 kHz I²C bus modes, with 32-byte page write capability and hardware write protection via WC pin - used for nonvolatile parameter storage in industrial sensor nodes and embedded control modules.
For engineers reviewing the M24C64-RMN6TP datasheet, M24C64-RMN6TP pinout, M24C64-RMN6TP application, or M24C64-RMN6TP equivalent, key selection considerations include supply voltage range compatibility (1.7–5.5 V), I²C speed mode support, page write timing (≤5 ms), WC-controlled full-array lock, and SO8N (ECOPACK2) package footprint alignment with legacy board layouts.
Technical Context
The M24C64-RMN6TP implements a standard I²C slave protocol with 7-bit device addressing (1010xxxR/W), where E2–E0 pins configure the three LSBs of the address; in the MN6TP variant (SO8N package), E2–E0 are internally tied to 000. It features an internal HV generator and sequencer for EEPROM cell programming, with ECC logic (process-dependent) correcting single-bit errors per 4-byte group.
Write operations require a STOP condition to trigger the internal tW cycle (max 5 ms); polling on ACK enables host synchronization without fixed delays. The WC pin disables all writes when high, while SDA operates open-drain requiring external pull-up - compatible with standard I²C bus topologies up to 400 kHz (fast-mode) or 1 MHz (fast-mode plus with appropriate timing margins).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 64 Kbit (8 Kbyte), organized as 8,192 × 8-bit words - sufficient for firmware configuration tables, calibration data, or device identity storage in space-constrained designs. |
| I²C speed modes | Supports 100 kHz (standard), 400 kHz (fast), and 1 MHz (fast-plus) - enables flexible integration with microcontrollers ranging from legacy 8-bit MCUs to modern ARM Cortex-M hosts. |
| Supply voltage | 1.7 V to 5.5 V over –40 °C to +85 °C - allows direct interfacing with 1.8 V, 3.3 V, and 5 V logic domains without level shifters. |
| Write time | ≤5 ms for byte or page write - deterministic timing simplifies host firmware timeout handling and avoids indefinite blocking during nonvolatile updates. |
| Data retention | 200 years at +25 °C - ensures long-term reliability for infrequently updated parameters in infrastructure or medical equipment. |
| Endurance | 4 million write cycles - supports frequent logging or runtime parameter adjustment in industrial HMI or telemetry applications. |
| Page size | 32 bytes - optimizes burst-write efficiency while minimizing wasted space in partial-page updates. |
Pinout & Package
Package: SO8N (ECOPACK2), 150-mil width, RoHS-compliant and halogen-free - industry-standard 8-pin small-outline package with pin 1 marked by notch or dot, compatible with automated assembly and IPC-7351B land patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (E2) | Chip enable LSB | Internally pulled low (0) in SO8N; sets bit b1 of 7-bit I²C address - fixes device address to 1010000x for multi-device bus sharing. |
| 2 (E1) | Chip enable middle bit | Internally pulled low (0); sets bit b2 of I²C address - ensures predictable slave addressing without external biasing. |
| 3 (E0) | Chip enable MSB | Internally pulled low (0); sets bit b3 of I²C address - eliminates need for external resistors to define device ID on shared I²C buses. |
| 4 (VSS) | Ground reference | System ground return for all signals and internal charge pump - must be low-impedance and decoupled near package pins. |
| 5 (SDA) | Serial data I/O | Open-drain bidirectional line - requires external pull-up resistor (typically 2.2–10 kΩ) to VCC; supports wired-AND bus arbitration. |
| 6 (SCL) | Serial clock input | Master-generated clock strobe - determines I²C timing compliance (tLOW, tHIGH, tSU;STA) and maximum bus speed. |
| 7 (WC) | Write control | Active-high hardware lock - when high, blocks all write operations including byte/page/ID page writes; enables fail-safe parameter protection. |
| 8 (VCC) | Power supply | 1.7–5.5 V DC input - requires local 10–100 nF ceramic decoupling capacitor to suppress switching noise and ensure stable internal HV generation. |
Key Features
| Feature | Design Value |
|---|---|
| Triple I²C speed support | Operates across 100 kHz, 400 kHz, and 1 MHz modes - eliminates need for separate parts when migrating between MCU platforms or optimizing bus bandwidth. |
| Hardware write protection | WC pin disables all memory writes when asserted high - prevents accidental corruption during power transients or firmware faults without software overhead. |
| Wide supply range | 1.7–5.5 V operation over full industrial temperature range - enables direct connection to battery-backed rails, LDO outputs, or mixed-voltage SoM interfaces. |
| Enhanced reliability | 200-year data retention and 4M write cycles - meets long-lifecycle requirements for industrial controllers, smart meters, and automotive body electronics. |
| ECOPACK2 packaging | SO8N RoHS-compliant and halogen-free - satisfies environmental compliance mandates (EU RoHS, JEDEC JS709, China RoHS) without performance trade-offs. |
Applications
| Industrial Sensor Calibration | Embedded Firmware Configuration |
|---|---|
|
Use Scenario: Storing factory-calibrated offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed at boot and during field recalibration via I²C. Use Value: Enables traceable, tamper-resistant calibration data persistence across 20+ years of field operation without backup batteries. |
Use Scenario: Holding user-configurable settings (baud rate, network ID, alarm thresholds) in HVAC controller HMI modules. IC Role / Device Role / Timing Role: I²C slave memory for persistent BOM-level configuration storage independent of main MCU flash. Use Value: Allows field updates without reflashing MCU firmware, reducing service downtime and qualification effort. |
| Smart Meter Data Logging | Automotive Body Control Module |
|
Use Scenario: Recording cumulative energy consumption and tamper-event timestamps in ANSI C12.20-compliant electricity meters. IC Role / Device Role / Timing Role: High-endurance EEPROM for cyclic logging with WC-protected critical registers. Use Value: Supports >10,000 daily write cycles over 10-year meter lifetime while maintaining data integrity under wide temperature swings. |
Use Scenario: Storing seat position memory, mirror presets, and lighting profiles in 12 V automotive body control units. IC Role / Device Role / Timing Role: Automotive-grade I²C EEPROM interfaced directly to 3.3 V MCU I/O with WC pin tied to system safety monitor. Use Value: Guarantees reliable recall of user preferences after ignition cycling, even during cold-cranking voltage dips down to 1.7 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar I²C EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C64D-SSHM-T (Microchip) | Same 64 Kbit capacity, 1.7–5.5 V, but only supports up to 400 kHz I²C; no WC pin - uses software write protect. | Lacks hardware-level write lock; requires firmware coordination to prevent concurrent access corruption. | Select when cost sensitivity outweighs need for fail-safe hardware protection and 1 MHz timing headroom. |
| BR24G64FJ-WE2 (ROHM) | 64 Kbit, 1.6–5.5 V, supports 1 MHz I²C, includes WC pin, but rated only to +105 °C (vs. +85 °C for M24C64-RMN6TP). | Better high-temp suitability for under-hood automotive use, but lacks ST's ECOPACK2 halogen-free certification. | Prefer for extended-temperature environments where halogen-free compliance is secondary to thermal margin. |
Compared with AT24C64D-SSHM-T and BR24G64FJ-WE2, the M24C64-RMN6TP uniquely combines 1 MHz I²C support, hardware WC lock, ECOPACK2 compliance, and industrial –40 °C to +85 °C operation - making it optimal for high-reliability, mixed-voltage industrial control systems requiring deterministic write protection.
Availability
M24C64-RMN6TP is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded firmware configuration, smart meter data logging, and automotive body control module designs requiring stable component supply across multi-year production cycles.
Supply support for M24C64-RMN6TP 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and memory solutions for industrial, automotive, and consumer markets.
The M24C64-RMN6TP belongs to ST's serial EEPROM product line, engineered specifically for robust, low-power, I²C-based nonvolatile storage in space- and reliability-constrained embedded systems.
FAQ
What is the function of the WC pin on the M24C64-RMN6TP?
The WC (Write Control) pin is an active-high hardware lock that disables all write operations-including byte, page, and identification page writes-when driven high. It provides fail-safe protection against unintended memory modification during power-up/down transients or firmware errors. When WC is low or floating, writes are enabled; no software command is needed to activate this feature.
Does the M24C64-RMN6TP support 1 MHz I²C communication in all operating conditions?
Yes, the M24C64-RMN6TP supports 1 MHz I²C fast-mode plus operation across its full specified voltage range (1.7–5.5 V) and temperature range (–40 °C to +85 °C). This requires compliant master timing (tLOW ≥ 0.5 μs, tHIGH ≥ 0.5 μs, tSU;STA ≥ 0.26 μs) and proper bus capacitance control (<400 pF) with appropriate pull-up strength.
How does the SO8N package of the M24C64-RMN6TP differ from TSSOP8 or WLCSP variants?
The SO8N (MN code) is a 150-mil width plastic small-outline package with gull-wing leads, optimized for reflow soldering and automated optical inspection. Unlike TSSOP8 (narrower 169-mil body) or WLCSP (chip-scale, no leads), SO8N offers superior mechanical robustness, thermal dissipation, and legacy board compatibility - critical for industrial and automotive applications where vibration and thermal cycling are concerns.
Can the M24C64-RMN6TP be used in battery-powered devices with 1.8 V supply?
Yes - the M24C64-RMN6TP operates down to 1.7 V over its full industrial temperature range, making it suitable for single-cell Li-ion (3.0–4.2 V), LiFePO₄ (2.5–3.65 V), or dual-AA alkaline (2.0–3.2 V) powered systems. Its 1.7 V minimum ensures reliable I²C communication and write completion even during deep discharge or cold-temperature battery sag.
M24C64-RMN6TP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 64Kbit
- Memory Organization:
- 8K x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 1 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 450 ns
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
M24C64-RMN6TP FAQ
1.How can I place an order for M24C64-RMN6TP through Aetrix?
Please submit a Request for Quotation (RFQ) for M24C64-RMN6TP 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 M24C64-RMN6TP reliable?
The price and inventory of M24C64-RMN6TP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M24C64-RMN6TP is usually 5 days.
3.What payment methods are accepted for M24C64-RMN6TP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M24C64-RMN6TP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M24C64-RMN6TP?
M24C64-RMN6TP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M24C64-RMN6TP 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 M24C64-RMN6TP?
For technical support, including M24C64-RMN6TP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M24C64-RMN6TP requirements.
6.How does Aetrix verify that M24C64-RMN6TP is sourced from the original manufacturer or authorized distributors?
All M24C64-RMN6TP 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 M24C64-RMN6TP meets industry standards.
7.What is the process for return or replacement of M24C64-RMN6TP?
All M24C64-RMN6TP units undergo pre-shipment inspection (PSI). If there is an issue with M24C64-RMN6TP, 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 M24C64-RMN6TP part is unused and in its original packaging.
Return procedure for M24C64-RMN6TP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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