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Microchip Technology 93AA76CT-I/MS15KVAO
- Part No.:
- 93AA76CT-I/MS15KVAO
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
93AA76CT-I/MS15KVAO.pdf
- Description:
- IC EEPROM 8KBIT MICROWIRE 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,126
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Product details
Overview
93AA76CT-I/MS15KVAO from Microchip Technology Inc. is a low-voltage, 8 Kbit serial EEPROM with Microwire-compatible 3-wire interface, configurable 8-/16-bit word organization via ORG pin, and Program Enable (PE) write-protection control. It operates from 1.8V to 5.5V, supports Industrial temperature range (–40°C to +85°C), and delivers 1 million erase/write cycles with >200-year data retention - used in embedded system configuration storage and sensor calibration parameter retention.
For engineers reviewing the 93AA76CT-I/MS15KVAO datasheet, 93AA76CT-I/MS15KVAO pinout, 93AA76CT-I/MS15KVAO application, or 93AA76CT-I/MS15KVAO equivalent, key selection considerations include VCC operating range compatibility, ORG/PE pin logic requirements for memory configuration and write enable, Ready/Busy status polling via DO, and self-timed erase/write timing under varying supply voltages.
Technical Context
This device implements a synchronous serial Microwire interface with CS, CLK, DI, and DO signals, where instruction execution is triggered by a Start condition (CS high + DI high on CLK rising edge). Memory organization is dynamically selected: ORG = VSS enables 1024 × 8-bit mode; ORG = VCC enables 512 × 16-bit mode.
Write operations require prior EWEN command and active-high PE signal; ERAL and WRAL instructions perform full-array erase and write with auto-erase, both requiring VCC ≥ 4.5V. Device status is reported via DO pin (low = busy, high = ready) during programming, with TSV ≤ 500 ns at 1.8V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 8 Kbit (1024 × 8 or 512 × 16, selectable via ORG pin) |
| VCC range | 1.8V to 5.5V - supports single-supply operation across battery-powered and industrial rails |
| Interface | 3-wire Microwire-compatible serial (CS, CLK, DI/DO) - minimal GPIO usage, no SPI mode bits required |
| Endurance | 1,000,000 erase/write cycles - suitable for frequent field-updatable configuration storage |
| Data retention | >200 years at 25°C - ensures long-term reliability in unpowered storage applications |
| Write time | 5 ms typical (TWC) at VCC ≥ 4.5V - defines minimum delay before next command or status poll |
| Standby current | 1 µA max (I-temp) - enables ultra-low-power operation in sleep-mode systems |
Pinout & Package
8-lead MSOP package (3.0 mm × 3.0 mm, 0.65 mm pitch), Pb-free Matte Tin finish, industrial temperature grade (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-high enable; must be held low ≥250 ns between commands; deselects device into standby mode |
| CLK | Serial Clock | Positive-edge synchronous clock; stops freely during transmission; not required during self-timed write |
| DI | Data Input | Accepts Start bit, opcode, address, and data; tied to DO only with series resistor to prevent bus conflict |
| DO | Data Output / Status | Outputs read data or Ready/Busy status (low = busy); enters High-Z on CS falling edge |
| VSS | Ground | Reference for all I/O and internal circuitry; must be connected before VCC |
| ORG | Organization Select | Logic high → 512 × 16-bit; logic low → 1024 × 8-bit; must be fixed before first instruction |
| PE | Program Enable | Logic high required to execute EWEN, ERASE, WRITE, WRAL; tied low disables all writes permanently |
| VCC | Power Supply | 1.8–5.5V; internal POR triggers at ~1.5V; voltage detect ensures data integrity during brownout |
Key Features
| Feature | Design Value |
|---|---|
| Word-size configurability | Single hardware pin (ORG) selects between 8-bit and 16-bit addressing - eliminates firmware rework for memory-width changes |
| Hardware write protection | Dedicated PE pin enables system-level write disable without software intervention - critical for safety-critical boot configuration |
| Self-timed erase/write | No external timing components needed; internal logic manages auto-erase before write - simplifies host controller timing design |
| Ready/Busy status signaling | DO pin doubles as status indicator during programming - enables efficient polling without dedicated status register access |
| Power-on/off data protection | Internal circuitry inhibits writes below VCC threshold (~1.5V) - prevents corruption during power ramp-up/down |
Applications
| Industrial PLC Configuration Storage | Automotive Sensor Calibration Data |
|---|---|
Use Scenario: Storing I/O mapping tables, PID tuning parameters, and alarm thresholds in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration EEPROM interfaced to microcontroller via Microwire; accessed during startup and runtime updates. Use Value: 1M endurance supports daily parameter adjustments over 10+ years; 1.8V operation enables direct connection to low-voltage MCU I/O without level shifters. | Use Scenario: Retaining factory-calibrated offset/gain coefficients for temperature, pressure, and position sensors in engine control units. IC Role / Device Role / Timing Role: Microwire EEPROM storing trim values read at boot; write-protected via PE pin after calibration. Use Value: >200-year data retention ensures calibration validity over vehicle lifetime; ORG pin allows flexible 8-bit or 16-bit coefficient packing per sensor channel. |
| Medical Device Setup Profiles | Smart Energy Meter Tariff Tables |
Use Scenario: Saving user-defined therapy profiles (e.g., infusion rates, alarm limits) in portable infusion pumps. IC Role / Device Role / Timing Role: Low-power serial EEPROM accessed during setup mode; powered from coin-cell backup during main power loss. Use Value: 1 µA standby current extends battery life; 1.8V minimum VCC enables operation down to end-of-life battery voltage (~2.0V). | Use Scenario: Storing time-of-use tariff schedules and billing history in utility-grade electricity meters. IC Role / Device Role / Timing Role: Write-protected configuration memory updated infrequently via secure communication channel. Use Value: Hardware PE pin prevents unauthorized tariff modification; WRAL instruction enables atomic full-table update with automatic ERAL pre-erase. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 93LC76CT-I/MS | Same 8Kbit capacity and MSOP-8 package, but requires VCC ≥2.5V; lacks PE pin - write protection relies solely on EWEN/EWDS commands | Not suitable where hardware-level write disable (e.g., safety lockout) is mandated; higher VCC floor limits battery-only operation | Select when system VCC never drops below 2.5V and software-controlled write enable suffices |
| 93AA76C-I/MS | Identical electrical specs and pinout, but marked without 'T' suffix - indicates standard (non-traceable) temperature grade marking; same Industrial temp rating | No functional difference; 'T' in 93AA76CT-I/MS15KVAO denotes traceable lot code per Microchip's marking convention | Select when full traceability (e.g., for medical/automotive audit) is required; otherwise functionally interchangeable |
Compared with 93LC76CT-I/MS, the 93AA76CT-I/MS15KVAO offers lower VCC operation and hardware PE-based write disable; compared with 93AA76C-I/MS, it provides full production traceability without electrical or mechanical change.
Availability
93AA76CT-I/MS15KVAO is available at Aetrix Electronics and suitable for industrial PLC configuration storage, automotive sensor calibration data retention, and medical device setup profile management requiring stable component supply across extended product lifecycles.
Supply support for 93AA76CT-I/MS15KVAO 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 leading provider of microcontrollers, analog devices, and nonvolatile memory solutions, headquartered in Chandler, Arizona.
The 93XX76 family was designed specifically for low-power, serially interfaced nonvolatile memory applications in space-constrained embedded systems requiring robust data retention and flexible memory organization.
FAQ
What is the function of the ORG pin on the 93AA76CT-I/MS15KVAO?
The ORG pin on the 93AA76CT-I/MS15KVAO selects memory organization: tied to VCC enables 512 × 16-bit mode; tied to VSS enables 1024 × 8-bit mode. This hardware-selectable configuration eliminates firmware changes when adapting to different data-width requirements. The 93AA76CT-I/MS15KVAO requires ORG to be fixed at power-up and cannot be changed dynamically during operation.
Does the 93AA76CT-I/MS15KVAO require an external pull-up resistor on the DO line?
No, the 93AA76CT-I/MS15KVAO does not require an external pull-up on DO. The DO pin actively drives high/low during read or status reporting and enters High-Z when inactive. However, if DI and DO are shorted (shared bus), a series resistor (e.g., 10 kΩ) is required between them to prevent bus conflict during the dummy zero phase of read operations - a design constraint specific to the 93AA76CT-I/MS15KVAO's Microwire protocol implementation.
What is the minimum VCC voltage required for reliable operation of the 93AA76CT-I/MS15KVAO?
According to the DS21796M datasheet, the 93AA76CT-I/MS15KVAO guarantees full functionality down to 1.8V across the Industrial temperature range (–40°C to +85°C). Below ~1.5V, internal power-on reset circuitry inhibits all operations to prevent data corruption. Thus, 1.8V is the specified minimum operating VCC, and the 93AA76CT-I/MS15KVAO remains fully functional at this rail, including read, write, and status polling.
Can the 93AA76CT-I/MS15KVAO be used in automotive applications?
The 93AA76CT-I/MS15KVAO is rated for Industrial temperature range (–40°C to +85°C), not Automotive (–40°C to +125°C). While it may function in some under-hood environments, Microchip does not qualify or guarantee its reliability beyond +85°C. For automotive applications requiring AEC-Q100 compliance or extended temperature operation, the 93LC76CT-E/MS or 93C76CT-E/MS variants - explicitly rated for E-temp - should be selected instead of the 93AA76CT-I/MS15KVAO.
How does write protection work on the 93AA76CT-I/MS15KVAO?
Write protection on the 93AA76CT-I/MS15KVAO uses dual-layer control: software-level protection via EWEN/EWDS commands, and hardware-level protection via the PE pin. Programming is only possible when PE = VCC AND the device is in EWEN state. If PE is tied low, all erase/write functions are permanently disabled regardless of EWEN status. This hardware lock makes the 93AA76CT-I/MS15KVAO suitable for applications requiring tamper-resistant configuration storage.
93AA76CT-I/MS15KVAO Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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:
- 3 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- -
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
93AA76CT-I/MS15KVAO FAQ
1.How can I place an order for 93AA76CT-I/MS15KVAO through Aetrix?
Please submit a Request for Quotation (RFQ) for 93AA76CT-I/MS15KVAO 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 93AA76CT-I/MS15KVAO reliable?
The price and inventory of 93AA76CT-I/MS15KVAO are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 93AA76CT-I/MS15KVAO is usually 5 days.
3.What payment methods are accepted for 93AA76CT-I/MS15KVAO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 93AA76CT-I/MS15KVAO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 93AA76CT-I/MS15KVAO?
93AA76CT-I/MS15KVAO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 93AA76CT-I/MS15KVAO 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 93AA76CT-I/MS15KVAO?
For technical support, including 93AA76CT-I/MS15KVAO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 93AA76CT-I/MS15KVAO requirements.
6.How does Aetrix verify that 93AA76CT-I/MS15KVAO is sourced from the original manufacturer or authorized distributors?
All 93AA76CT-I/MS15KVAO 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 93AA76CT-I/MS15KVAO meets industry standards.
7.What is the process for return or replacement of 93AA76CT-I/MS15KVAO?
All 93AA76CT-I/MS15KVAO units undergo pre-shipment inspection (PSI). If there is an issue with 93AA76CT-I/MS15KVAO, 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 93AA76CT-I/MS15KVAO part is unused and in its original packaging.
Return procedure for 93AA76CT-I/MS15KVAO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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