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STMicroelectronics M93C56-WDW6TP
- Part No.:
- M93C56-WDW6TP
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
M93C56-WDW6TP.pdf
- Description:
- IC EEPROM 2KBIT MICROWIRE 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:7,290
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Product details
Overview
M93C56-WDW6TP from STMicroelectronics is a 2-Kbit serial EEPROM with MICROWIRE™ interface, configurable as 256 × 8-bit or 128 × 16-bit memory, operating from 2.5 V to 5.5 V at up to 2 MHz clock frequency, and rated for -40 °C to +85 °C industrial temperature range. It delivers fast 5 ms byte/page write cycles, 4 million write endurance, and 200-year data retention - used in microcontroller-based system configuration storage where nonvolatile parameter persistence is required.
For engineers reviewing the M93C56-WDW6TP datasheet, M93C56-WDW6TP pinout, M93C56-WDW6TP application, or M93C56-WDW6TP equivalent, key selection criteria include MICROWIRE™ bus compatibility, dual x8/x16 organization flexibility via ORG pin, READY/BUSY status signaling, enhanced ESD protection (4 kV HBM), and SO8N package suitability for space-constrained industrial control PCBs.
Technical Context
The M93C56-WDW6TP implements a static CMOS serial EEPROM architecture with on-chip clock pulse counter for noise immunity and automatic erase-before-write logic. Its instruction set supports READ, WRITE, ERASE, WRAL, WEN/WDS with address-dependent bit-length decoding (9-bit address for x8, 8-bit for x16).
Organization Select (ORG) pin determines memory mapping: tied to VSS for 256-byte (x8) mode, unconnected or tied to VCC for 128-word (x16) mode. The device features internal power-on reset (POR), standby current optimization based on ORG biasing, and Q pin dual-role as serial data output and READY/BUSY indicator during programming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 2048 bits (256 × 8 or 128 × 16) |
| Interface protocol | MICROWIRE™ serial bus (3-wire: S, C, D/Q) |
| Supply voltage | 2.5 V to 5.5 V - enables direct interfacing with 3.3 V and 5 V MCUs without level shifting |
| Max clock frequency | 2 MHz - supports high-speed configuration reads in real-time embedded systems |
| Write cycle time | ≤5 ms per byte or page - reduces firmware wait time during calibration or setup updates |
| Data retention | 200 years at 55 °C - ensures long-term reliability in unattended industrial equipment |
| Write endurance | 4 million cycles at 25 °C - accommodates frequent field-updatable parameter logging |
| ESD rating | 4000 V HBM - meets IEC 61000-4-2 Level 3 for robustness in factory-floor environments |
Pinout & Package
Package: SO8N (150 mil width), ECOPACK2-compliant, surface-mount 8-pin small outline integrated circuit.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | Must be stable within 2.5–5.5 V; decoupling capacitor (10–100 nF) required near pin |
| VSS | Ground reference | Return path for all signals; must be low-impedance connection to system GND plane |
| S | Chip select input | Active-high enable; must be pulled low during power-up to prevent spurious writes |
| C | Serial clock input | Controls timing of all data transfers; rising edge samples D, shifts Q; pull-down recommended if MCU enters Hi-Z state |
| D | Serial data input | Accepts start bit, op-code, address, and data; sampled on rising edge of C |
| Q | Serial data output / READY-BUSY | Outputs read data MSB-first; asserts Q=0 during write/erase, Q=1 when ready |
| ORG | Organization select input | Configures memory map: VSS = x8 (256 bytes), open/VCC = x16 (128 words); affects address bit count and instruction length |
| DU | Do-not-use test pin | No functional role; may be left floating, tied to VCC, or connected to VSS - no electrical impact on operation |
Key Features
| Feature | Design Value |
|---|---|
| Dual memory organization | Hardware-selectable x8 or x16 mapping via ORG pin - eliminates need for software remapping in mixed-bus systems |
| READY/BUSY signaling | Q pin indicates internal programming status - enables polling-based firmware flow without fixed delays |
| On-chip clock pulse counter | Validates exact clock count per instruction - prevents corruption from EMI-induced clock glitches |
| Automatic erase-before-write | No explicit ERASE command needed before WRITE - simplifies firmware logic and reduces instruction overhead |
| Enhanced latch-up immunity | Qualified per AEC-Q100 stress tests - ensures robust operation in electrically noisy motor-control or power-supply applications |
Applications
| Industrial PLC Configuration Storage | Automotive Body Control Module (BCM) Trim Settings |
|---|---|
Use Scenario: Storing calibrated sensor offsets, I/O mapping tables, and user-defined operational modes in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile parameter register accessed during boot and runtime via MICROWIRE™ bus; ORG pin hardwired for x8 layout to match 8-bit MCU data bus. Use Value: Eliminates external battery-backed RAM; 200-year retention guarantees firmware compatibility across product lifecycle without recalibration. | Use Scenario: Retaining seat position memory, mirror angle presets, and lighting profiles across ignition cycles in BCM subsystems. IC Role / Device Role / Timing Role: Dedicated configuration EEPROM interfaced to 8-bit automotive MCU; powered from always-on 3.3 V rail with POR-protected write sequencing. Use Value: Withstands repeated 4 million write cycles over vehicle lifetime; 4 kV HBM ESD rating survives assembly handling and service shop ESD events. |
| Medical Infusion Pump Calibration Data | Smart Energy Meter Firmware Parameters |
Use Scenario: Holding flow-rate calibration coefficients, alarm thresholds, and usage logs subject to regulatory audit requirements. IC Role / Device Role / Timing Role: Safety-critical nonvolatile storage; accessed only during maintenance mode with WEN/WDS sequence enforced by certified firmware. Use Value: Data retention validated at 55 °C ensures integrity under sterilization or warm ambient storage; DU pin unused per IEC 62304 traceability rules. | Use Scenario: Storing tariff schedules, metering constants, and tamper-event timestamps in utility-grade electricity meters. IC Role / Device Role / Timing Role: Secure configuration store isolated from main processor; ORG tied to VSS for deterministic x8 addressing in RTOS task context. Use Value: SO8N package enables conformal coating compatibility; 2.5–5.5 V range supports wide-input DC-DC outputs in harsh grid environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT25020B-SSHL-T | SPI interface (4-wire), 2 Kbit, 1.8–5.5 V, no ORG pin - fixed x8 organization | Lacks hardware-configurable word/byte mode; requires SPI-capable host instead of MICROWIRE™ | Select when migrating to SPI-based platforms or when ORG flexibility is unnecessary |
| M93C56-RMN6TP | Same die, 1.8–5.5 V supply range, TSSOP8 package, identical pinout and instruction set | Enables lower-voltage operation (1.8 V) but same functionality; TSSOP8 footprint differs from SO8N | Choose for battery-powered or ultra-low-power designs requiring 1.8 V compatibility and smaller board area |
Compared with AT25020B-SSHL-T, M93C56-WDW6TP offers hardware-selectable memory width and MICROWIRE™ compatibility for legacy 3-wire systems; versus M93C56-RMN6TP, it trades wider voltage margin (2.5 V min) for SO8N mechanical fit and higher noise immunity in industrial 5 V rails.
Availability
M93C56-WDW6TP is available at Aetrix Electronics and suitable for industrial PLC configuration storage, automotive BCM trim settings, and medical infusion pump calibration data requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for M93C56-WDW6TP 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 needing reliable serial EEPROM with flexible organization and robust bus-level noise immunity - optimized for integration into MCU-peripheral subsystems with minimal external components.
FAQ
What is the function of the ORG pin on M93C56-WDW6TP?
The ORG pin selects memory organization: when connected to VSS, the device operates in 256 × 8-bit (x8) mode; when left unconnected or tied to VCC, it uses 128 × 16-bit (x16) mode. This changes address bit count (9 vs. 8 bits) and instruction length, enabling hardware-mapped compatibility with different MCU data widths without firmware modification.
Does M93C56-WDW6TP require an external pull-up resistor on the Q pin?
No external pull-up is required on Q. The pin has active drive capability for both data output and READY/BUSY signaling. During READ, Q actively drives data; during programming, it pulls low (BUSY) or high (READY). High-impedance states occur only when S is low, so no pull-up is needed for bus contention control.
How is write protection implemented on M93C56-WDW6TP?
Write protection is controlled by WEN (Write Enable) and WDS (Write Disable) instructions. Power-on reset disables writes by default. A WEN instruction must precede any ERASE or WRITE command; WDS relocks the memory. This two-step software lock prevents accidental overwrites - critical for field-updatable calibration data in safety-relevant systems.
Can M93C56-WDW6TP be used with a 1.8 V microcontroller?
No - M93C56-WDW6TP is the -W variant with 2.5–5.5 V supply range. For 1.8 V operation, use the -R variant (e.g., M93C56-RMN6TP), which shares identical functionality and pinout but supports 1.8 V minimum. Interfacing the -W version to 1.8 V logic risks undervoltage operation and unreliable communication.
M93C56-WDW6TP 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:
- 2Kbit
- Memory Organization:
- 256 x 8, 128 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-TSSOP
M93C56-WDW6TP FAQ
1.How can I place an order for M93C56-WDW6TP through Aetrix?
Please submit a Request for Quotation (RFQ) for M93C56-WDW6TP 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 M93C56-WDW6TP reliable?
The price and inventory of M93C56-WDW6TP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M93C56-WDW6TP is usually 5 days.
3.What payment methods are accepted for M93C56-WDW6TP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M93C56-WDW6TP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M93C56-WDW6TP?
M93C56-WDW6TP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M93C56-WDW6TP 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 M93C56-WDW6TP?
For technical support, including M93C56-WDW6TP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M93C56-WDW6TP requirements.
6.How does Aetrix verify that M93C56-WDW6TP is sourced from the original manufacturer or authorized distributors?
All M93C56-WDW6TP 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 M93C56-WDW6TP meets industry standards.
7.What is the process for return or replacement of M93C56-WDW6TP?
All M93C56-WDW6TP units undergo pre-shipment inspection (PSI). If there is an issue with M93C56-WDW6TP, 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 M93C56-WDW6TP part is unused and in its original packaging.
Return procedure for M93C56-WDW6TP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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