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STMicroelectronics M24C04-RDW6TP
- Part No.:
- M24C04-RDW6TP
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
M24C04-RDW6TP.pdf
- Description:
- IC EEPROM 4KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:25,565
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Product details
Overview
M24C04-RDW6TP from STMicroelectronics is a 4-Kbit I²C-compatible serial EEPROM organized as 512 × 8 bits, operating at up to 400 kHz clock frequency with 1.8 V to 5.5 V supply voltage. It features 16-byte page write capability, hardware write protection via WC pin, and delivers >4 million write cycles with >200-year data retention at 55 °C. Used in industrial sensor calibration storage and embedded system configuration backup.
For engineers reviewing the M24C04-RDW6TP datasheet, M24C04-RDW6TP pinout, M24C04-RDW6TP application, or M24C04-RDW6TP equivalent, key selection considerations include its 1.8 V minimum VCC support, TSSOP8 (DW) 169-mil package, WC-controlled full-array write protection, and compatibility with standard I²C bus timing under -40 °C to +85 °C ambient conditions.
Technical Context
The M24C04-RDW6TP implements a standard I²C slave protocol with start/stop detection, 7-bit device addressing (1010xxA8), and ACK/NACK handshaking. Its internal architecture includes a page latch, X/Y decoders, HV generator for EEPROM programming, and a power-on-reset circuit that prevents spurious writes during power ramp-up.
It supports three read modes - random, current address, and sequential - with automatic address counter increment and roll-over (except in DFN5 package). Write control (WC) is active-high and disables all write operations regardless of address, while chip enable pins E1/E2 configure the two MSBs of the device address - though these are unconnected in the TSSOP8-DW variant used here.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 4 Kbit (512 × 8 bits) - sufficient for firmware version stamps, sensor offsets, and small configuration tables. |
| I²C clock frequency | Up to 400 kHz - enables fast parameter updates without requiring high-speed MCU peripherals. |
| Supply voltage range | 1.8 V to 5.5 V - supports direct interfacing with 1.8 V logic, 3.3 V microcontrollers, and 5 V legacy systems. |
| Write time (byte/page) | ≤5 ms - deterministic internal write cycle allows predictable timeout handling in host firmware. |
| Data retention | 200 years at 55 °C - ensures long-term reliability in unattended industrial deployments. |
| Endurance | 4 million write cycles at 25 °C - accommodates frequent recalibration or logging in fielded equipment. |
| Operating temperature | -40 °C to +85 °C - qualified for extended industrial and automotive under-hood environments. |
Pinout & Package
Package: TSSOP8 (DW), 169 mil width, RoHS-compliant and halogen-free (ECOPACK2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: SDA | Serial Data I/O | Open-drain bidirectional bus line; requires external pull-up; shares bus with other I²C devices. |
| 2: VSS | Ground Reference | Primary return path for all signals and VCC decoupling; must be low-impedance connection. |
| 3: SCL | Serial Clock Input | Master-generated clock; rising edge samples SDA; falling edge permits SDA transitions. |
| 4: WC | Write Control Input | Active-high hardware lock: when high, blocks all write instructions and returns NACK on data bytes. |
| 5: E1 | Chip Enable (MSB) | Not connected in TSSOP8-DW package; internally pulled low to fix b2 = 0 in device address (1010 00 A8 R/W). |
| 6: NC | No Connect | Unused pad; left floating or grounded per PCB layout best practice; no electrical function. |
| 7: VCC | Supply Voltage | 1.8–5.5 V input; requires local 10–100 nF ceramic decoupling capacitor near pins 7/2. |
| 8: E2 | Chip Enable (LSB) | Not connected in TSSOP8-DW package; internally pulled low to fix b3 = 0 in device address (1010 00 A8 R/W). |
Key Features
| Feature | Design Value |
|---|---|
| Hardware write protection | WC pin disables all writes globally - eliminates need for software-based lock bits or address masking. |
| Page write mode | 16-byte burst writes reduce I²C transaction overhead by up to 15× vs. byte-by-byte programming. |
| Power-on reset (POR) | Prevents accidental writes during power ramp-up; device ignores commands until VCC exceeds POR threshold. |
| Enhanced ESD/latch-up immunity | ±3 kV HBM ESD rating and robust latch-up immunity - suitable for assembly-line handling and noisy industrial environments. |
| ECOPACK2 packaging | TSSOP8-DW meets RoHS and halogen-free requirements without performance trade-offs or derating. |
Applications
| Industrial Sensor Calibration | Smart Meter Configuration Storage |
|---|---|
|
Use Scenario: Storing factory-calibrated gain/offset coefficients and temperature compensation tables for pressure and humidity sensors. IC Role / Device Role / Timing Role: Nonvolatile parameter store accessed during sensor initialization and periodic self-test routines. Use Value: Enables field-replaceable sensor modules with persistent calibration data across power cycles and firmware updates. |
Use Scenario: Retaining tariff schedules, metering constants, and communication settings in utility smart meters. IC Role / Device Role / Timing Role: Secure, tamper-resistant configuration memory updated infrequently but required for regulatory compliance. Use Value: Supports DLMS/COSEM protocol compliance with guaranteed 200-year data integrity under elevated ambient temperatures. |
| Embedded System Bootloader Settings | IoT Edge Device Identity Storage |
|
Use Scenario: Holding bootloader jump vectors, secure boot flags, and fail-safe recovery image pointers in industrial gateways. IC Role / Device Role / Timing Role: Critical startup-time configuration memory read before main application execution begins. Use Value: Ensures deterministic boot behavior even after unexpected power loss or failed firmware update. |
Use Scenario: Storing unique device identifiers (UID), TLS certificate fingerprints, and provisioning keys in battery-powered edge nodes. IC Role / Device Role / Timing Role: Low-power, infrequent-access identity vault supporting secure onboarding and attestation. Use Value: Leverages 1.8 V operation to minimize energy draw during secure credential reads in sleep-mode wakeups. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C04D-SSHM-T (Microchip) | Same 4-Kbit capacity and I²C interface, but rated only to 1.7 V min VCC and lacks WC pin; uses software write protect. | Requires firmware-level protection logic; unsuitable where hardware lockout is mandated for safety-critical writes. | Select if cost sensitivity outweighs need for hardware write disable and 1.8 V compatibility. |
| BR24G04FJ-WE2 (ROHM) | 1.7 V min VCC, 400 kHz max clock, but offers built-in WP pin and supports 1.2 V operation down to -40 °C (not verified for M24C04-RDW6TP). | Enables ultra-low-voltage designs; however, BR24G04FJ-WE2's DFN package differs mechanically and electrically (no E1/E2 pins). | Choose for sub-1.8 V systems where TSSOP8 footprint is not required and WP functionality suffices. |
Compared with AT24C04D-SSHM-T and BR24G04FJ-WE2, the M24C04-RDW6TP uniquely combines 1.8 V operation, dedicated WC pin for unconditional write blocking, and TSSOP8-DW mechanical compatibility - making it optimal for industrial designs requiring robust hardware-level write security and wide supply tolerance.
Availability
M24C04-RDW6TP is available at Aetrix Electronics and suitable for industrial sensor calibration, smart meter configuration storage, and embedded bootloader settings requiring stable component supply across extended temperature and voltage ranges.
Supply support for M24C04-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, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and memory solutions for industrial, automotive, and consumer markets.
The M24C04-RDW6TP belongs to ST's serial EEPROM product line, engineered specifically for reliable, low-power nonvolatile storage in space-constrained industrial and IoT endpoints where hardware write protection and wide VCC tolerance are critical.
FAQ
What is the function of the WC pin on M24C04-RDW6TP?
The WC (Write Control) pin is an active-high hardware lock that disables all write operations to the entire memory array when driven high. When WC = high, the device acknowledges device select and address bytes but returns NACK on data bytes, preventing inadvertent writes during power transients or firmware errors. It operates independently of software commands and requires no initialization.
Does M24C04-RDW6TP support 100 kHz I²C mode in addition to 400 kHz?
Yes, the M24C04-RDW6TP is fully compatible with both standard-mode (100 kHz) and fast-mode (400 kHz) I²C bus operation. Its AC timing parameters meet I²C specification requirements across the full 1.8 V to 5.5 V supply range and -40 °C to +85 °C temperature range, enabling interoperability with legacy and modern controllers without speed negotiation.
How does the M24C04-RDW6TP handle address rollover during sequential reads?
During sequential read, the internal address counter increments after each byte and rolls over from address 1FFh back to 00h - delivering continuous data from the full 512-byte array. This behavior is guaranteed for SO8N, TSSOP8, and UFDFPN8 packages. The DFN5 variant excludes rollover, but M24C04-RDW6TP uses TSSOP8-DW, so rollover is fully supported and deterministic.
Can E1 and E2 pins be left unconnected on the M24C04-RDW6TP in TSSOP8-DW package?
Yes - the M24C04-RDW6TP in TSSOP8-DW package has E1 and E2 pins internally pulled low and physically unconnected. This fixes the device address to 1010 00 A8 R/W, eliminating external biasing requirements and simplifying PCB layout. No external resistors or ties are needed, and the pins may be left floating or grounded per board design rules.
M24C04-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:
- 4Kbit
- Memory Organization:
- 512 x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 900 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
M24C04-RDW6TP FAQ
1.How can I place an order for M24C04-RDW6TP through Aetrix?
Please submit a Request for Quotation (RFQ) for M24C04-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 M24C04-RDW6TP reliable?
The price and inventory of M24C04-RDW6TP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M24C04-RDW6TP is usually 5 days.
3.What payment methods are accepted for M24C04-RDW6TP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M24C04-RDW6TP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M24C04-RDW6TP?
M24C04-RDW6TP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M24C04-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 M24C04-RDW6TP?
For technical support, including M24C04-RDW6TP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M24C04-RDW6TP requirements.
6.How does Aetrix verify that M24C04-RDW6TP is sourced from the original manufacturer or authorized distributors?
All M24C04-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 M24C04-RDW6TP meets industry standards.
7.What is the process for return or replacement of M24C04-RDW6TP?
All M24C04-RDW6TP units undergo pre-shipment inspection (PSI). If there is an issue with M24C04-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 M24C04-RDW6TP part is unused and in its original packaging.
Return procedure for M24C04-RDW6TP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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