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STMicroelectronics M93C76-WMN6TP
- Part No.:
- M93C76-WMN6TP
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
M93C76-WMN6TP.pdf
- Description:
- IC EEPROM 8KBIT MICROWIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,895
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Product details
Overview
M93C76-WMN6TP from STMicroelectronics is an 8-Kbit MICROWIRE™-interface serial EEPROM with dual x8/x16 organization, operating from 2.5 V to 5.5 V over –40 °C to +85 °C, supporting up to 2 MHz clock frequency and delivering ≤5 ms byte/page write time. It is used in industrial control panels for nonvolatile parameter storage requiring robust write endurance and long-term data retention.
For engineers reviewing the M93C76-WMN6TP datasheet, M93C76-WMN6TP pinout, M93C76-WMN6TP application, or M93C76-WMN6TP equivalent, key selection criteria include its SO8N package compatibility, READY/BUSY status signaling, ORG-selectable memory width, and 4 million write cycles at 25°C - all critical for embedded firmware configuration and calibration storage.
Technical Context
The M93C76-WMN6TP implements a static CMOS MICROWIRE™ interface with synchronous serial communication using S (chip select), C (clock), D (data in), Q (data out), and ORG (organization select) signals. Its internal architecture supports both byte-wide (x8, 1024-byte) and word-wide (x16, 512-word) addressing modes determined by the ORG pin state.
It features on-chip clock pulse counting to reject noise-induced instruction corruption, a power-on reset (POR) circuit preventing spurious writes during power ramp-up, and automatic erase-before-write functionality. The device asserts BUSY (Q = 0) during internal programming and returns READY (Q = 1) upon completion, enabling polling-based host synchronization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 8 Kbit (1024 bytes or 512 words), configurable via ORG pin |
| Interface protocol | MICROWIRE™ serial bus: 3-wire synchronous (S, C, D/Q) with start-bit framing |
| Supply voltage | 2.5 V to 5.5 V - enables direct interfacing with 3.3 V and 5 V microcontrollers |
| Write endurance | 4 million write cycles at 25°C - supports frequent field calibration updates |
| Data retention | 200 years at 55°C - ensures firmware parameter integrity across product lifecycle |
| Max clock frequency | 2 MHz - allows high-speed read/write in time-critical boot or configuration sequences |
| Write time | ≤5 ms per byte or page - minimizes host wait time during nonvolatile storage operations |
Pinout & Package
Package: SO8N (150 mil width), 8-pin small outline integrated circuit, ECOPACK2-compliant, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply | 2.5–5.5 V DC input; requires local 10–100 nF decoupling capacitor |
| VSS | Ground reference | Return path for all I/O and internal circuitry; must be low-impedance |
| S | Chip select | Active-high enable signal; must be pulled low during power-up to prevent spurious writes |
| C | Serial clock | Input clock synchronized to D/Q transitions; rising edge samples D, clocks Q |
| D | Serial data input | Instruction and data input line; sampled on rising edge of C |
| Q | Serial data output / READY-BUSY | Output data (MSB-first) or status signal: Q=0 = BUSY, Q=1 = READY |
| ORG | Organization select | High = x16 mode (512 words), Low = x8 mode (1024 bytes); sets memory width at power-up |
| DU | Do-not-use test pin | No functional role; may be left floating, tied to VCC, or connected to VSS |
Key Features
| Feature | Design Value |
|---|---|
| Programmable memory width | x8 or x16 organization selected by ORG pin - eliminates need for external address decoding logic |
| READY/BUSY status signaling | Q pin doubles as status indicator - enables polling without additional hardware or timing margins |
| Noise-immune instruction validation | On-chip clock pulse counter aborts misaligned instructions - prevents corrupted writes in electrically noisy environments |
| Erase-before-write automation | Internal erase cycle precedes every WRITE - simplifies firmware driver implementation and guarantees data consistency |
| Enhanced reliability protection | 4 kV HBM ESD rating and latch-up immunity - suitable for industrial PCBs with minimal board-level protection |
Applications
| Industrial PLC Configuration Storage | Automotive Body Control Module (BCM) Trim Settings |
|---|---|
|
Use Scenario: Storing calibrated sensor offsets, I/O mapping, and user-defined operational modes in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during boot and runtime reconfiguration via MICROWIRE™-compatible MCU GPIOs. Use Value: Dual x8/x16 organization reduces address bus overhead; 200-year data retention ensures parameter persistence across 15+ year equipment lifespans. |
Use Scenario: Retaining seat position memory, mirror angle presets, and lighting profiles across vehicle ignition cycles. IC Role / Device Role / Timing Role: Dedicated parameter EEPROM interfaced to BCM's 3.3 V MCU with strict ESD and temperature resilience requirements. Use Value: 4 million write cycles support daily user adjustments over 10+ years; –40 °C to +85 °C operation meets AEC-Q200 ambient specs. |
| Medical Device Calibration Data | Smart Meter Firmware Parameter Tables |
|
Use Scenario: Holding factory-calibrated ADC gain/offset coefficients and safety-critical operational limits in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage element accessed only during calibration mode or firmware update sequences. Use Value: Write-enable/disable protocol prevents accidental overwrites; 2.5 V minimum supply supports battery-backed operation during brownout conditions. |
Use Scenario: Storing tariff schedules, metering constants, and communication credentials in utility-grade electricity meters. IC Role / Device Role / Timing Role: High-reliability serial EEPROM integrated into metrology SoC subsystem with strict data integrity requirements. Use Value: READY/BUSY signaling enables deterministic firmware update timing; ECOPACK2 compliance satisfies RoHS and lead-free assembly mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT25DF041A-SSHN-B | 4-Mbit SPI interface, quad I/O capable, 3.3 V only (2.7–3.6 V) | Lacks MICROWIRE™ compatibility and ORG-selectable width; requires SPI controller with quad mode support | Choose when higher density and faster SPI throughput are needed, and MICROWIRE™ legacy compatibility is not required. |
| M95M01-RDW6TP | 1-Mbit SPI EEPROM, 1.8–5.5 V supply, built-in write protection registers | No ORG pin or dual-width support; uses SPI command set instead of MICROWIRE™ op-code framing | Select for designs migrating from MICROWIRE™ to SPI infrastructure where pin count and protocol flexibility outweigh legacy interface needs. |
Compared with AT25DF041A-SSHN-B and M95M01-RDW6TP, the M93C76-WMN6TP uniquely preserves MICROWIRE™ bus compatibility and hardware-configurable x8/x16 memory mapping - critical for maintaining firmware compatibility in legacy industrial controllers without MCU firmware rewrite.
Availability
M93C76-WMN6TP is available at Aetrix Electronics and suitable for industrial PLCs, automotive body control modules, medical calibration systems, and smart metering platforms requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for M93C76-WMN6TP 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 M93Cxx series targets cost-sensitive, space-constrained embedded systems requiring reliable, low-pin-count serial EEPROM with flexible memory organization and robust environmental tolerance.
FAQ
What is the function of the ORG pin on the M93C76-WMN6TP?
The ORG pin selects memory organization: tied to VCC (or left open) configures the 8-Kbit array as 512 words (x16), while tied to VSS configures it as 1024 bytes (x8). This setting is latched at power-up and determines address bit count and data width for all subsequent READ/WRITE operations.
How does the READY/BUSY signal work during write operations?
When a WRITE, ERASE, WRAL, or ERAL instruction is issued, the Q pin outputs LOW (BUSY) while the internal programming cycle executes. Once complete, Q goes HIGH (READY), indicating the device accepts new commands. This occurs regardless of S level, enabling host polling without timing assumptions.
Can the M93C76-WMN6TP operate reliably at 1.8 V?
No - the M93C76-WMN6TP is the -W variant, specified for 2.5 V to 5.5 V operation. For 1.8 V compatibility, the -R variant (e.g., M93C76-RMN6TP) must be used, which shares identical pinout and functionality but extends VCC min to 1.8 V.
Is the DU pin required to be connected?
No - the DU (Do Not Use) pin is reserved for STMicroelectronics internal test purposes. It has no functional role in normal operation and may be left unconnected, tied to VCC, or tied to VSS without affecting device behavior or reliability.
M93C76-WMN6TP 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:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 8Kbit
- Memory Organization:
- 1K x 8, 512 x 16
- Memory Interface:
- Microwire
- Clock Frequency:
- 2 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- -
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
M93C76-WMN6TP FAQ
1.How can I place an order for M93C76-WMN6TP through Aetrix?
Please submit a Request for Quotation (RFQ) for M93C76-WMN6TP 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 M93C76-WMN6TP reliable?
The price and inventory of M93C76-WMN6TP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M93C76-WMN6TP is usually 5 days.
3.What payment methods are accepted for M93C76-WMN6TP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M93C76-WMN6TP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M93C76-WMN6TP?
M93C76-WMN6TP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M93C76-WMN6TP 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 M93C76-WMN6TP?
For technical support, including M93C76-WMN6TP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M93C76-WMN6TP requirements.
6.How does Aetrix verify that M93C76-WMN6TP is sourced from the original manufacturer or authorized distributors?
All M93C76-WMN6TP 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 M93C76-WMN6TP meets industry standards.
7.What is the process for return or replacement of M93C76-WMN6TP?
All M93C76-WMN6TP units undergo pre-shipment inspection (PSI). If there is an issue with M93C76-WMN6TP, 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 M93C76-WMN6TP part is unused and in its original packaging.
Return procedure for M93C76-WMN6TP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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