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Microchip Technology 93C76T-E/SN
- Part No.:
- 93C76T-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
93C76T-E/SN.pdf
- Description:
- IC EEPROM 8KBIT MICROWIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,769
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Product details
Overview
93C76T-E/SN from Microchip Technology is an 8K-bit Microwire-compatible serial EEPROM with configurable x8/x16 organization via ORG pin, 5.0V single-supply operation, 1 mA typical active current, and 1,000,000 erase/write cycles - used for nonvolatile parameter storage in industrial control modules and embedded system configuration memory.
For engineers reviewing the 93C76T-E/SN datasheet, 93C76T-E/SN pinout, 93C76T-E/SN application, or 93C76T-E/SN equivalent, this page delivers verified electrical specs, SOIC-8 package mapping, real-world timing behavior (2 MHz max clock, 10 ms write cycle), and direct alternatives for legacy design continuity and supply chain resilience.
Technical Context
The 93C76T-E/SN implements a 3-wire Microwire serial interface (CS/CLK/DI/DO) with synchronous read/write/erase operations controlled by opcode-driven instruction set. Its dual-memory organization (1024 × 8 or 512 × 16) is selected at power-up via ORG pin voltage level, and all programming requires explicit EWEN enable before ERASE or WRITE.
It features hardware-level data protection: power-on/off inhibit circuitry (active below 1.4 V), automatic ERAL before WRAL, and PE pin-based full-array write lock. Ready/Busy status is signaled via DO pin during self-timed erase/write cycles (max 10 ms for WRITE, 15 ms for ERAL, 30 ms for WRAL), eliminating need for external timing delays.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 8 Kbit (1024 × 8 or 512 × 16), enabling compact firmware parameter tables or calibration data sets |
| Supply voltage | 4.5–5.5 V - compatible with standard 5 V logic rails without regulation overhead |
| Max clock frequency | 2 MHz - supports fast host MCU bit-banging or SPI-to-Microwire translation |
| Write endurance | 1,000,000 cycles - suitable for field-updatable settings with daily rewrites over 27 years |
| Data retention | >200 years at 25°C - ensures long-term reliability in unpowered storage applications |
| Operating temperature | −40°C to +125°C (Automotive E-grade) - qualified for under-hood or industrial motor drive environments |
| Package | 8-pin SOIC (SN), 150 mil body - surface-mount compatible with standard reflow profiles |
Pinout & Package
8-pin SOIC (SN) package, 150 mil body width, JEDEC MS-012 compliant, lead-free matte tin finish. Pin 1 marked by notch or dot; pin numbering counterclockwise from top-left corner when viewed from top with marking side up.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 CS | Chip Select | Active-high enable; must be held low ≥250 ns between instructions; controls Standby mode entry/exit |
| 2 CLK | Serial Clock | Rising-edge synchronized I/O; stops/resumes freely; no clocks required during self-timed write |
| 3 DI | Data Input | Accepts Start bit, opcode, address, and write data; supports shared DI/DO bus with careful timing |
| 4 DO | Data Output / Status | Outputs read data or Ready/Busy (low = busy); high-Z when CS low or not reading |
| 5 VSS | Ground | Reference return path for all signals; decoupling capacitor required near pin |
| 6 PE | Program Enable | Internal pull-up enables write if floating/VCC; tie to VSS to permanently disable programming |
| 7 VCC | Power Supply | 4.5–5.5 V input; internal power-on reset holds programming disabled until VCC >1.4 V |
| 8 ORG | Organization Select | Tie to VCC for 512 × 16 mode; tie to VSS for 1024 × 8 mode; internal pull-up defaults to x16 |
Key Features
| Feature | Design Value |
|---|---|
| Configurable memory organization | Single device supports either 1024 × 8 or 512 × 16 layout via ORG pin - reduces BOM variants for dual-interface systems |
| Self-timed erase/write | No external timing components needed; WRAL includes auto-ERAL - simplifies host firmware timing logic |
| Hardware write protection | Dedicated PE pin + power-on inhibit + EWEN/EWDS command lock - prevents accidental corruption during brown-out or noise events |
| Ready/Busy status signaling | DO pin asserts low during active erase/write - enables polling-based host synchronization without fixed delays |
| Sequential read capability | Holding CS high across multiple reads auto-increments address pointer - accelerates bulk data retrieval with minimal host overhead |
Applications
| Industrial PLC Configuration Storage | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Storing calibrated sensor offsets, I/O mapping, and user-defined logic parameters in programmable logic controllers that operate continuously in factory environments. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding persistent setup data accessed at boot and updated infrequently during maintenance. Use Value: 1,000,000 endurance cycles and −40°C to +125°C rating ensure reliable operation across decades of thermal cycling and vibration exposure. |
Use Scenario: Retaining door lock states, mirror position presets, and lighting profiles in automotive BCMs where power may be intermittently applied. IC Role / Device Role / Timing Role: Parameter memory interfaced via microcontroller GPIO bit-banged Microwire, surviving repeated ignition cycles and battery disconnects. Use Value: Power-on/off data protection circuitry prevents corruption during cold cranking (VCC dip below 1.4 V), meeting AEC-Q100 stress requirements. |
| Medical Device Calibration Data | Consumer Appliance Settings Memory |
Use Scenario: Holding factory-calibrated ADC gain/offset coefficients and safety-critical operational limits in portable diagnostic equipment requiring traceable, tamper-resistant storage. IC Role / Device Role / Timing Role: Secure configuration vault accessed only during service mode; PE pin tied to secure debug header to prevent runtime writes. Use Value: >200-year data retention guarantees calibration integrity over product lifetime without periodic refresh or backup power. |
Use Scenario: Saving user-selected wash cycles, temperature preferences, and delay timers in front-load washing machines subject to frequent power loss. IC Role / Device Role / Timing Role: Low-power serial memory powered directly from 5 V rail; standby current ≤100 µA minimizes energy drain during idle periods. Use Value: 1 mA active current and SOIC-8 footprint allow integration into space-constrained mainboard layouts without thermal derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 93LC76C-I/SN | Successor with same pinout, 2x faster 4 MHz clock, lower 3.3 V operation, and enhanced ESD (6 kV) | Requires VCC change from 5 V to 3.3 V; supports newer low-voltage MCUs without level shifters | Select for new designs needing higher speed or mixed-voltage systems; drop-in replacement only if 3.3 V rail available |
| AT25080B-MAU-10 | 8 Kbit SPI EEPROM (not Microwire), 20 MHz clock, 5 ms write cycle, SOIC-8 package | Requires SPI interface instead of Microwire; incompatible instruction set and timing protocol | Choose when migrating to SPI-based platforms; firmware rewrite required; offers faster throughput and broader vendor support |
Compared with 93C76T-E/SN, the 93LC76C-I/SN provides higher performance and modern voltage compatibility but mandates system-level voltage redesign, while the AT25080B-MAU-10 enables faster communication at the cost of complete interface and software rework.
Availability
93C76T-E/SN is available at Aetrix Electronics and suitable for industrial control systems, automotive electronics, medical instrumentation, and consumer appliance designs requiring stable component supply and long-lifecycle support.
Supply support for 93C76T-E/SN 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
Microchip Technology Inc. is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and memory products for embedded applications.
The 93C76T-E/SN belongs to Microchip's legacy Microwire EEPROM family, designed specifically for cost-sensitive, low-power nonvolatile storage in resource-constrained 8-bit and 16-bit microcontroller systems.
FAQ
What is the maximum clock frequency supported by the 93C76T-E/SN?
93C76T-E/SN supports a maximum clock frequency of 2 MHz across its full operating voltage range (4.5–5.5 V) and temperature range (−40°C to +125°C). This limit is defined by AC timing parameter FCLK in the datasheet and applies to all instructions including READ, WRITE, and ERASE. Exceeding 2 MHz may cause setup/hold violations and unreliable communication.
How does the ORG pin affect memory organization in the 93C76T-E/SN?
In the 93C76T-E/SN, the ORG pin selects between two memory configurations: tying ORG to VCC configures the device as 512 × 16 (x16 mode), while tying it to VSS configures it as 1024 × 8 (x8 mode). An internal pull-up resistor defaults ORG to VCC, so x16 mode is active if the pin is left unconnected. This selection determines address width and data word size for all instructions.
Can the 93C76T-E/SN be used with a 3.3 V microcontroller?
No - the 93C76T-E/SN is specified only for 4.5–5.5 V operation and is not 3.3 V tolerant. Its VIH1 minimum is 2.0 V, but VCC must remain within the 4.5–5.5 V range for guaranteed functionality. Using it with a 3.3 V host requires level-shifting on CS, CLK, DI, and DO lines, and risks violating absolute maximum ratings if VCC is not properly maintained at 5 V.
What is the purpose of the PE pin on the 93C76T-E/SN?
The PE (Program Enable) pin on the 93C76T-E/SN provides hardware-level write protection: when PE is tied to VSS, all erase and write operations are inhibited regardless of EWEN command state. When PE is floating or tied to VCC, programming is enabled. An internal pull-up ensures write capability by default, making PE a fail-safe mechanism against unintended writes during noise or power transients.
Is the 93C76T-E/SN pin-compatible with the 93C76T-I/SN?
Yes - both 93C76T-E/SN and 93C76T-I/SN use identical 8-pin SOIC (SN) packaging and share identical pin functions, electrical characteristics, and instruction sets. The only difference is temperature grade: E-grade supports −40°C to +125°C, while I-grade supports −40°C to +85°C. No PCB or firmware changes are required when substituting between these variants.
93C76T-E/SN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- 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:
- 10ms
- Access Time:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
93C76T-E/SN FAQ
1.How can I place an order for 93C76T-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 93C76T-E/SN 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 93C76T-E/SN reliable?
The price and inventory of 93C76T-E/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 93C76T-E/SN is usually 5 days.
3.What payment methods are accepted for 93C76T-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 93C76T-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 93C76T-E/SN?
93C76T-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 93C76T-E/SN 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 93C76T-E/SN?
For technical support, including 93C76T-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 93C76T-E/SN requirements.
6.How does Aetrix verify that 93C76T-E/SN is sourced from the original manufacturer or authorized distributors?
All 93C76T-E/SN 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 93C76T-E/SN meets industry standards.
7.What is the process for return or replacement of 93C76T-E/SN?
All 93C76T-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with 93C76T-E/SN, 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 93C76T-E/SN part is unused and in its original packaging.
Return procedure for 93C76T-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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