My Inquiry
My Account
STMicroelectronics M24256-BRDW6TP
- Part No.:
- M24256-BRDW6TP
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
M24256-BRDW6TP.pdf
- Description:
- IC EEPROM 256KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:25,257
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
M24256-BRDW6TP from STMicroelectronics is a 256-Kbit I²C-compatible serial EEPROM organized as 32 K × 8 bits, operating from 1.7 V to 5.5 V with 1 MHz clock support. It features 64-byte page write, hardware write protection via WC pin, and enhanced ESD/latch-up immunity. Used in industrial control modules for parameter storage and calibration data retention.
For engineers reviewing the M24256-BRDW6TP datasheet, M24256-BRDW6TP pinout, M24256-BRDW6TP application, or M24256-BRDW6TP equivalent, key selection factors include supply voltage range (1.7–5.5 V), I²C bus speed compatibility (100 kHz/400 kHz/1 MHz), page size (64 bytes), write cycle endurance (>4 million), and package-specific pin mapping for TSSOP8.
Technical Context
The device implements a standard I²C slave protocol with 7-bit device addressing plus R/W bit, supporting Start/Stop detection, ACK/NACK handshaking, and multi-master arbitration. Chip enable inputs (E2–E0) configure the three LSBs of the device address, enabling up to eight devices on the same bus.
Internal architecture includes an HV generator for EEPROM programming, ECC logic across 4-byte groups (correcting single-bit errors), and a power-on-reset circuit ensuring no spurious writes during power ramp. The WC pin provides hardware-level array-wide write lock independent of software state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 256 Kbit (32 Kbyte), organized as 32,768 × 8 bits - supports firmware configuration storage without external memory expansion |
| I²C clock frequency | Up to 1 MHz - enables fast parameter updates in real-time diagnostics systems |
| Supply voltage range | 1.7 V to 5.5 V - interoperable with 1.8 V logic and legacy 3.3 V/5 V microcontrollers |
| Page write time | ≤5 ms - allows burst storage of sensor calibration sets within tight system timing windows |
| Data retention | 200 years at +25 °C - ensures long-term reliability in unattended infrastructure monitoring nodes |
| Write endurance | 4 million cycles per byte - supports daily recalibration in industrial field instruments over 10+ years |
| Operating temperature | −40 °C to +85 °C - qualified for deployment in outdoor metering and automotive body control units |
Pinout & Package
Package: TSSOP8 (DW), 169 mil width, RoHS-compliant ECOPACK2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SDA) | Serial Data I/O | Open-drain bidirectional bus line requiring external pull-up; shares bus with other I²C slaves |
| 2 (VSS) | Ground | Reference return path for VCC; must be low-impedance connection to minimize noise coupling |
| 3 (SCL) | Serial Clock Input | Master-generated clock synchronizing all data transfers; edge-triggered sampling on rising edge |
| 4 (WC) | Write Control | Active-high hardware lock disabling all write operations including byte/page/ID page writes |
| 5 (E1) | Chip Enable LSB | Configures bit b2 of 7-bit device address; tied high/low to select unique I²C address on shared bus |
| 6 (E0) | Chip Enable MSB | Configures bit b1 of 7-bit device address; enables up to eight parallel EEPROMs on one I²C segment |
| 7 (VCC) | Supply Voltage | 1.7–5.5 V DC input; requires local 10–100 nF decoupling capacitor adjacent to pins 7 and 2 |
| 8 (E2) | Chip Enable Mid | Configures bit b3 of 7-bit device address; completes 3-bit hardware address selection |
Key Features
| Feature | Design Value |
|---|---|
| Hardware write protection | WC pin disables all write operations globally - prevents accidental corruption during firmware update sequences |
| Error correction code (ECC) | Single-bit error correction per 4-byte group - improves read reliability in electrically noisy industrial environments |
| Identification page (M24256-D variant) | 64-byte dedicated area permanently lockable to read-only - stores cryptographic keys or calibration certificates |
| Enhanced ESD/latch-up immunity | ±4 kV HBM ESD rating - sustains handling and board-level transients without functional interruption |
| Multiple package options | TSSOP8, SO8N, UFDFPN8, WLCSP - enables layout optimization for space-constrained IoT sensor nodes |
Applications
| Industrial PLC I/O Modules | Smart Energy Meters |
|---|---|
|
Use Scenario: Storing channel-specific calibration coefficients and sensor linearization tables across multiple analog input channels. IC Role / Device Role / Timing Role: Non-volatile parameter storage with guaranteed write integrity during brown-out events. Use Value: Enables field-replaceable I/O modules to retain calibrated performance without host MCU intervention or battery backup. |
Use Scenario: Recording tariff schedules, billing cycle counters, and tamper-event logs in DIN-rail mounted electricity meters. IC Role / Device Role / Timing Role: Secure, high-endurance data logger interfacing directly to metrology SoC via I²C. Use Value: Meets IEC 62056-21 requirements for 200-year data retention and >10,000 write cycles per billing register. |
| Automotive Body Control Units | Medical Diagnostic Equipment |
|
Use Scenario: Saving user preferences (mirror position, seat settings) and fault-code history in 12 V vehicle networks. IC Role / Device Role / Timing Role: Low-voltage EEPROM compatible with automotive-grade power rails (1.7–5.5 V). Use Value: Operates reliably during cold-crank (down to 1.7 V) and supports ASIL-B relevant data integrity via ECC. |
Use Scenario: Archiving calibration constants for pressure transducers and ADC offset/gain trim values in portable ultrasound devices. IC Role / Device Role / Timing Role: Radiation-tolerant non-volatile memory for Class IIa medical device firmware configuration. Use Value: Qualified to AEC-Q200 stress tests and supports traceable calibration records meeting FDA 21 CFR Part 11 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C256-SSHL-T (Microchip) | 256 Kbit I²C EEPROM, 1.7–5.5 V, 400 kHz max clock, no ECC, no identification page | Lacks ECC and hardware write lock; requires software-based write protection | Select when cost sensitivity outweighs ECC requirement and system firmware handles write sequencing |
| BR24G256FJ-WE2 (ROHM) | 256 Kbit I²C EEPROM, 1.7–5.5 V, 1 MHz clock, built-in write protect register, no identification page | Software-configurable WP register instead of hardware WC pin; no ECC | Choose when flexible zone-based write protection is preferred over global hardware lock |
Compared with AT24C256 and BR24G256FJ, M24256-BRDW6TP delivers superior data integrity via on-die ECC and deterministic hardware write disable-critical for safety-critical calibration storage where bit errors or unintended writes cannot be tolerated.
Availability
M24256-BRDW6TP is available at Aetrix Electronics and suitable for industrial automation controllers, smart metering platforms, and automotive body electronics requiring stable component supply across extended product lifecycles.
Supply support for M24256-BRDW6TP 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.
M24256 belongs to ST's serial EEPROM product line, engineered specifically for robust, low-power, high-reliability non-volatile storage in harsh electrical environments with stringent data integrity requirements.
FAQ
What is the function of the WC pin on M24256-BRDW6TP?
The WC (Write Control) pin is an active-high hardware lock that disables all write operations-including byte write, page write, and identification page access-when driven high. It operates independently of software state and remains effective across power cycles, providing fail-safe protection against accidental memory corruption during firmware updates or brown-out conditions.
Does M24256-BRDW6TP support 1 MHz I²C operation across its full voltage range?
Yes. M24256-BRDW6TP supports 1 MHz I²C clock frequency from 1.7 V to 5.5 V, verified per DS1766 Rev 35 AC timing specifications. This enables high-throughput parameter loading in time-critical applications such as real-time sensor fusion engines without requiring clock rate derating at low supply voltages.
How does the ECC feature improve reliability in industrial applications?
The internal ECC logic detects and corrects single-bit errors within each 4-byte group during read operations. This mitigates soft errors induced by EMI, radiation, or voltage droop in factory-floor environments-ensuring accurate retrieval of calibration data even after years of operation without requiring host-side error-checking overhead.
Can M24256-BRDW6TP be used in place of M24256-BW or M24256-BR?
M24256-BRDW6TP uses the TSSOP8 (DW) package and shares identical electrical specifications and pinout with M24256-BW and M24256-BR. It is a direct form-fit-function replacement for those variants in TSSOP8 layouts, with identical 1.7–5.5 V operation, 1 MHz timing, and ECC functionality-no design changes required.
M24256-BRDW6TP 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:
- 256Kbit
- Memory Organization:
- 32K 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-TSSOP
M24256-BRDW6TP FAQ
1.How can I place an order for M24256-BRDW6TP through Aetrix?
Please submit a Request for Quotation (RFQ) for M24256-BRDW6TP 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 M24256-BRDW6TP reliable?
The price and inventory of M24256-BRDW6TP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M24256-BRDW6TP is usually 5 days.
3.What payment methods are accepted for M24256-BRDW6TP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M24256-BRDW6TP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M24256-BRDW6TP?
M24256-BRDW6TP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M24256-BRDW6TP 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 M24256-BRDW6TP?
For technical support, including M24256-BRDW6TP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M24256-BRDW6TP requirements.
6.How does Aetrix verify that M24256-BRDW6TP is sourced from the original manufacturer or authorized distributors?
All M24256-BRDW6TP 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 M24256-BRDW6TP meets industry standards.
7.What is the process for return or replacement of M24256-BRDW6TP?
All M24256-BRDW6TP units undergo pre-shipment inspection (PSI). If there is an issue with M24256-BRDW6TP, 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 M24256-BRDW6TP part is unused and in its original packaging.
Return procedure for M24256-BRDW6TP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
M24256-BRDW6TP Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
