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STMicroelectronics M24512-RDW6TP
- Part No.:
- M24512-RDW6TP
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
M24512-RDW6TP.pdf
- Description:
- IC EEPROM 512KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:21,632
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Product details
Overview
M24512-RDW6TP from STMicroelectronics is a 512-Kbit (64 Kbyte) I²C-compatible serial EEPROM organized as 64 K × 8 bits, operating from 1.8 V to 5.5 V with 1 MHz clock support in TSSOP8 (DW) package. It features 128-byte page write, hardware write protection via WC pin, and enhanced ESD/latch-up immunity. Used for parameter storage in industrial controllers requiring nonvolatile configuration retention across power cycles.
For engineers reviewing the M24512-RDW6TP datasheet, M24512-RDW6TP pinout, M24512-RDW6TP application, or M24512-RDW6TP equivalent, this page delivers verified electrical specs, validated pin functions, real-world use cases in embedded systems, and confirmed drop-in alternatives with documented functional trade-offs.
Technical Context
The M24512-RDW6TP implements a standard I²C slave interface with 7-bit device addressing (1010xxxR/W), supporting Standard (100 kHz), Fast (400 kHz), and Fast-Plus (1 MHz) modes. Its internal architecture includes ECC logic per 4-byte group, automatic address incrementing, and a dedicated write control (WC) input that disables all memory writes when high.
It integrates a charge-pump HV generator for EEPROM programming, supports both random and sequential read modes, and features a power-on-reset circuit ensuring no spurious writes during VCC ramp-up. The identification page (128 bytes) is absent in the -R variant-only present in -D order codes-making this part strictly a 64 Kbyte general-purpose EEPROM without lockable ID space.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 512 Kbit (64 Kbyte), organized as 64 K × 8 bits - defines maximum persistent data capacity for firmware config or calibration tables. |
| Supply Voltage Range | 1.8 V to 5.5 V - enables direct interfacing with 1.8 V, 3.3 V, and 5 V microcontrollers without level shifters. |
| Max Clock Frequency | 1 MHz - supports high-speed I²C transfers, reducing write latency in time-critical boot-time parameter loading. |
| Page Write Size | 128 bytes - allows efficient bulk updates of related parameters (e.g., sensor calibration sets) in one I²C transaction. |
| Write Endurance | 4 million write cycles - ensures reliable operation over 10+ years in devices performing daily configuration saves. |
| Data Retention | 200 years at +25 °C - guarantees long-term integrity of stored calibration coefficients or security keys without refresh. |
| Operating Temperature | –40 °C to +85 °C - qualified for industrial environments including motor drives and PLC modules. |
Pinout & Package
Supplied in TSSOP8 (DW) package, 169 mil width, ECOPACK2® compliant, with 0.65 mm pitch and exposed pad not connected. Pinout matches industry-standard 8-pin I²C EEPROM layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| E0, E1, E2 | Chip Enable Inputs | Set lower 3 bits of 7-bit I²C slave address (1010xxx); tied high/low to enable multi-device bus addressing without conflict. |
| SDA | Serial Data I/O | Open-drain bidirectional line; requires external pull-up; carries address, command, and data bytes per I²C protocol. |
| SCL | Serial Clock Input | Master-generated clock synchronizing all data transfers; edge-triggered sampling on rising edge. |
| WC | Write Control Input | Hardware write protect: high = full array locked; low or floating = write enabled - eliminates software-only protection risks. |
| VCC | Supply Voltage | 1.8–5.5 V power rail; decoupling capacitor (10–100 nF) required near pins to suppress switching noise during write cycles. |
| VSS | Ground Reference | Return path for VCC; must be low-impedance connection to minimize ground bounce during internal HV generation. |
Key Features
| Feature | Design Value |
|---|---|
| ECOPACK2® Packaging | TSSOP8 (DW) meets RoHS, halogen-free, and lead-free requirements for industrial and automotive-qualified supply chains. |
| Hardware Write Protection | WC pin provides fail-safe, non-volatile write disable - critical for preventing corruption during brown-out or firmware crash. |
| ECC per 4-Byte Group | Single-bit error correction on read improves reliability in electrically noisy environments like factory automation. |
| Fast-Plus I²C Support | 1 MHz operation cuts 128-byte page write time to ≤5 ms - accelerates field firmware update verification steps. |
| Enhanced ESD/Latch-up Immunity | ±4 kV HBM ESD rating and latch-up immunity per JESD78 - reduces need for external protection in compact PCB layouts. |
Applications
| Industrial PLC Configuration Storage | Smart Meter Calibration Data Retention |
|---|---|
Use Scenario: Storing I/O mapping, PID tuning parameters, and alarm thresholds in programmable logic controllers deployed in manufacturing lines. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding user-defined operational settings persisting across AC power loss and firmware upgrades. Use Value: Eliminates manual reconfiguration after power interruption; supports remote parameter updates via Modbus-to-I²C gateway with verified write endurance. | Use Scenario: Retaining meter-specific calibration coefficients (voltage/current gain, offset, temperature drift) across 15+ year field lifetime. IC Role / Device Role / Timing Role: High-reliability parameter vault accessed during power-up and periodic self-test sequences. Use Value: 200-year data retention and 4M-cycle endurance ensure metrological accuracy compliance without field recalibration. |
| Medical Infusion Pump Safety Settings | Automotive Body Control Module (BCM) Defaults |
Use Scenario: Securing drug library limits, dose rate caps, and clinician access levels in Class II medical infusion devices subject to IEC 62304. IC Role / Device Role / Timing Role: Tamper-resistant configuration store where WC pin is hardwired to ground during assembly to prevent runtime modification. Use Value: Hardware-enforced write lock satisfies safety requirement for immutable critical parameters; ECC prevents silent data corruption. | Use Scenario: Holding door lock timing profiles, window auto-up/down thresholds, and lighting fade rates in 12 V automotive BCMs. IC Role / Device Role / Timing Role: Low-voltage EEPROM interfacing directly with 3.3 V MCU in CAN/LIN gateway modules. Use Value: 1.8 V minimum VCC enables operation during cold-crank battery dips; TSSOP8 footprint fits tight under-hood space constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C512B-SSHL-T (Microchip) | Same 512 Kbit size, but max 1 MHz only at ≥2.5 V; no WC pin - write protection relies on software address locking. | Lacks hardware-level write disable; unsuitable where safety standards mandate physical write lock. | Select if system already uses Microchip ecosystem and voltage stays ≥2.5 V; avoid for safety-critical or brown-out-prone designs. |
| BR24T512FJ-WE2 (ROHM) | 512 Kbit, 1.7–5.5 V, includes WC pin, but only rated to 400 kHz max clock; no ECC. | Lower speed limits throughput in high-frequency polling scenarios; no bit-error correction increases risk in EMI-heavy environments. | Prefer for cost-sensitive consumer applications where 400 kHz suffices and ECC is non-mandatory. |
Compared with AT24C512B and BR24T512FJ, the M24512-RDW6TP uniquely combines 1 MHz operation down to 1.8 V, hardware WC pin, and per-group ECC - making it optimal for industrial and medical systems demanding speed, safety, and data integrity under voltage stress.
Availability
M24512-RDW6TP is available at Aetrix Electronics and suitable for industrial PLCs, smart meters, medical infusion pumps, and automotive body control modules requiring stable component supply with guaranteed long-term availability.
Supply support for M24512-RDW6TP 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, designing and manufacturing microcontrollers, power ICs, sensors, and memory solutions for industrial, automotive, and consumer markets.
The M24512-RDW6TP belongs to ST's serial EEPROM product line, engineered specifically for robust, low-power, high-reliability nonvolatile storage in harsh industrial and safety-critical embedded systems.
FAQ
What is the function of the WC pin on M24512-RDW6TP?
The WC (Write Control) pin is a hardware-level write protect input. When driven high, it disables all write operations-including byte, page, and erase-to the entire 64 Kbyte memory array. This provides fail-safe protection against accidental or malicious writes during power transients or firmware faults. Unlike software-based locks, WC remains active regardless of MCU state or I²C command sequence.
Does M24512-RDW6TP support the identification page feature?
No. The identification page (128-byte lockable area) is exclusive to M24512-D order codes. The M24512-RDW6TP is an -R variant and contains only the standard 64 Kbyte memory array with no additional ID page. Its device select code uses 1010xxxR/W format exclusively; 1011xxxR/W commands will not be acknowledged.
Can M24512-RDW6TP operate reliably at 1.8 V while running at 1 MHz?
Yes. The -R suffix explicitly denotes 1.8 V to 5.5 V operation, and the datasheet confirms full 1 MHz I²C compliance across this entire voltage range. Electrical characteristics-including tBUF, tHD:STA, and tLOW-are specified and tested at 1.8 V, enabling direct interface with 1.8 V FPGAs and ultra-low-power MCUs without voltage translation.
How does ECC work in M24512-RDW6TP, and does it affect write endurance?
ECC operates transparently on every 4-byte group (addresses 4N–4N+3), correcting single-bit errors during reads. During writes, ECC logic automatically updates all 4 bytes in the group-even for single-byte writes-distributing wear. Endurance is therefore rated per group (4 million cycles total across the 4 bytes), not per byte, preserving longevity when data is written non-uniformly across addresses.
M24512-RDW6TP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 512Kbit
- Memory Organization:
- 64K x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 1 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 500 ns
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
M24512-RDW6TP FAQ
1.How can I place an order for M24512-RDW6TP through Aetrix?
Please submit a Request for Quotation (RFQ) for M24512-RDW6TP 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 M24512-RDW6TP reliable?
The price and inventory of M24512-RDW6TP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M24512-RDW6TP is usually 5 days.
3.What payment methods are accepted for M24512-RDW6TP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M24512-RDW6TP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M24512-RDW6TP?
M24512-RDW6TP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M24512-RDW6TP 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 M24512-RDW6TP?
For technical support, including M24512-RDW6TP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M24512-RDW6TP requirements.
6.How does Aetrix verify that M24512-RDW6TP is sourced from the original manufacturer or authorized distributors?
All M24512-RDW6TP 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 M24512-RDW6TP meets industry standards.
7.What is the process for return or replacement of M24512-RDW6TP?
All M24512-RDW6TP units undergo pre-shipment inspection (PSI). If there is an issue with M24512-RDW6TP, 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 M24512-RDW6TP part is unused and in its original packaging.
Return procedure for M24512-RDW6TP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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