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Microchip Technology 93AA86/SN
- Part No.:
- 93AA86/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
93AA86/SN.pdf
- Description:
- IC EEPROM 16KBIT MICROWIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,749
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Product details
Overview
93AA86/SN from Microchip Technology Inc. is a 16K-bit (2048 × 8 or 1024 × 16) low-voltage serial EEPROM with Microwire interface, operating down to 1.8V, supporting self-timed erase/write cycles and ORG-pin-selectable memory organization. It features 1 mA typical active current, 5 µA standby current at 3.0V, and 1,000,000 erase/write endurance - used in embedded system configuration storage and power-sensitive industrial controllers.
For engineers reviewing the 93AA86/SN datasheet, 93AA86/SN pinout, 93AA86/SN application, or 93AA86/SN equivalent, this page delivers verified electrical specs, SOIC-8 package mapping, real-world timing behavior (e.g., 3 ms typical write cycle), functional differences vs. 93AA76/SN, and design-critical status signaling via DO pin during programming.
Technical Context
The 93AA86/SN implements a synchronous 3-wire Microwire-compatible serial interface with CS, CLK, DI, and DO lines. Its memory array supports dual organization modes (x8 or x16) selected by the ORG pin, enabling flexible byte- or word-oriented access without external logic.
It uses internal self-timed erase/write cycles with automatic ERAL before WRAL, and provides Ready/Busy status via DO pin while CS remains high - eliminating need for external polling delays. Power-on/off data protection activates below 1.4V, and PE pin enables hardware write-protection independent of software commands.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 16 Kbit (2048 × 8 or 1024 × 16), selectable via ORG pin - determines address depth and data width per READ/WRITE command |
| Supply voltage range | 1.8V to 6.0V - enables direct integration into 1.8V, 3.3V, and 5V systems without level-shifting |
| Write endurance | 1,000,000 cycles - ensures long-term reliability in firmware parameter logging or calibration storage |
| Data retention | 200 years at 25°C - guarantees nonvolatile integrity across product lifecycle without refresh |
| Max clock frequency | 3 MHz at VCC ≥ 4.5V - defines maximum serial throughput for configuration loading in time-constrained boot sequences |
| Standby current | 5 µA typical at 3.0V - minimizes quiescent power in battery-backed or energy-harvesting applications |
| Write cycle time | 3 ms typical per word - sets minimum interval between successive WRITE instructions in sequential update routines |
Pinout & Package
8-pin Plastic Small Outline (SOIC), narrow body (150 mil), JEDEC MS-012 compliant, Pb-free matte tin finish. Pin 1 marked with notch or dot; standard SOIC footprint compatible with automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-high enable: must be held high for instruction execution; low for 250 ns minimum between commands to reset internal state |
| CLK | Serial Clock | Synchronizes all data transfers on rising edge; stops/resumes freely - allows master CPU to insert delays between bits |
| DI | Data Input | Accepts Start bit, opcode, address, and write data; requires setup/hold times relative to CLK edge per VCC range |
| DO | Data Output / Status | Outputs read data or Ready/Busy (low = busy); enters high-Z when CS goes low - enables shared bus topology |
| VSS | Ground | Reference return path for all I/O and core logic; must be low-impedance to ensure stable timing margins |
| ORG | Organization Select | Connect to VCC for 1024 × 16 mode; to VSS for 2048 × 8 mode; internal pull-up defaults to x16 if unconnected |
| PE | Program Enable | Float or tie to VCC to allow writes; tie to VSS to permanently inhibit erase/write - hardware lock against accidental corruption |
| VCC | Power Supply | 1.8–6.0V input; internal voltage monitor disables programming below 1.4V during power-up/down transitions |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply 1.8V operation | Eliminates need for auxiliary voltage rails in ultra-low-power microcontroller subsystems |
| Self-timed erase/write cycles | Removes requirement for external timing control or wait-state insertion in host firmware |
| Automatic ERAL before WRAL | Guarantees full-array erase prior to bulk write - prevents partial-data corruption on power loss |
| Device status signal (DO pin) | Enables real-time polling of programming progress without dedicated status register reads |
| Program Enable (PE) pin | Provides hardware-level write protection independent of software state - critical for field-upgrade safety |
| Sequential read function | Allows continuous multi-byte reads with single CS assertion - reduces transaction overhead in configuration dumps |
Applications
| Industrial Sensor Calibration | Consumer Remote Control Memory |
|---|---|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients and temperature compensation tables in smart pressure transmitters. IC Role / Device Role / Timing Role: Nonvolatile configuration store accessed during power-up initialization; retains values across 10+ year deployments. Use Value: 200-year data retention and 1M endurance support recalibration every 6 months over product lifetime without wear-out risk. |
Use Scenario: Holding user-programmed channel presets and IR code learning history in universal remote controls. IC Role / Device Role / Timing Role: Low-power serial memory interfaced directly to 8-bit MCU with Microwire peripheral; updated infrequently but must survive battery swaps. Use Value: 5 µA standby current extends coin-cell life beyond 2 years; 1.8V operation ensures compatibility with aging battery voltage. |
| Medical Device Configuration | Automotive Body Control Module |
Use Scenario: Saving patient-specific therapy parameters and usage logs in portable infusion pumps. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage with hardware write-lock (PE pin grounded) to prevent unauthorized parameter changes. Use Value: PE pin disable provides physical assurance against firmware bugs or malicious updates corrupting critical therapy settings. |
Use Scenario: Storing door lock/unlock patterns, mirror position memories, and lighting profiles in vehicle BCMs. IC Role / Device Role / Timing Role: Microwire EEPROM interfaced to automotive-grade MCU; accessed during ignition-on sequence for personalization restore. Use Value: 1.8–6.0V supply range accommodates wide automotive battery swing (6–16V with regulator); -40°C to +125°C ambient rating covers under-hood thermal stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 93AA86C/SN | Pin-compatible revision with enhanced ESD (6 kV HBM vs. 4 kV), improved AC timing margins, and extended qualification for automotive AEC-Q100 Grade 3. | Required for new designs targeting automotive or high-reliability industrial use; not drop-in for legacy 93AA86/SN due to qualification scope. | Select 93AA86C/SN for production designs requiring longer lifecycle support and higher robustness; 93AA86/SN remains valid for existing legacy systems. |
| AT25040B-MAU-1.8 | 4 Kbit SPI EEPROM (not Microwire), 1.8V min, 20 MHz max clock, no ORG pin - fixed 512 × 8 organization. | Lacks dual-organization flexibility and Microwire protocol; requires SPI host interface instead of Microwire. | Choose only if host MCU lacks Microwire peripheral but has SPI; verify timing and command set compatibility before substitution. |
Compared with 93AA86/SN, the 93AA86C/SN offers superior ESD immunity and automotive qualification without layout change, while AT25040B-MAU-1.8 trades protocol compatibility and density for higher speed and broader vendor support - selection depends on interface availability and reliability requirements.
Availability
93AA86/SN is available at Aetrix Electronics and suitable for industrial sensor calibration, consumer remote control memory, medical device configuration, and automotive body control module applications requiring stable component supply and long-term obsolescence management.
Supply support for 93AA86/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 leading provider of microcontrollers, analog devices, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 93AAxx family was designed specifically for low-voltage, low-power serial nonvolatile memory applications in space-constrained embedded systems where Microwire interface simplicity and hardware write protection are essential.
FAQ
What is the memory organization flexibility of the 93AA86/SN?
The 93AA86/SN supports two memory configurations: 2048 × 8-bit or 1024 × 16-bit, selected by the ORG pin voltage. When ORG = VCC, it operates in x16 mode; when ORG = VSS, it operates in x8 mode. This allows the same 93AA86/SN die to serve both byte-addressable and word-addressable system architectures without redesigning the PCB layout or firmware addressing logic.
How does the 93AA86/SN indicate programming completion during erase or write cycles?
The 93AA86/SN uses the DO pin to signal Ready/Busy status: DO = low indicates ongoing erase or write operation; DO = high confirms completion. This polling mechanism works only while CS remains high and eliminates need for fixed delay loops - host firmware can read DO after each command and proceed immediately upon high detection. The 93AA86/SN specification guarantees this behavior across its full 1.8–6.0V supply range.
Is the 93AA86/SN compatible with modern 1.8V microcontrollers?
Yes, the 93AA86/SN is fully compatible with 1.8V microcontrollers: it operates down to 1.8V, accepts VIH as low as 0.7×VCC (so 1.26V at 1.8V), and draws only 1 mA typical active current. Its SOIC-8 package matches standard 1.8V MCU footprints, and its Microwire interface requires no level shifters - making the 93AA86/SN a direct fit for battery-powered IoT nodes and wearable electronics.
What is the role of the PE pin on the 93AA86/SN?
The PE (Program Enable) pin on the 93AA86/SN provides hardware-level write protection: tying PE to VSS permanently disables all erase and write functions, preventing accidental or malicious memory corruption. With internal pull-up, floating PE enables programming by default. This feature is critical in safety-critical applications like medical devices, where firmware must guarantee that calibration data cannot be altered without physical intervention - a capability unique to the 93AA86/SN among legacy Microwire EEPROMs.
Does the 93AA86/SN require external timing components for erase or write operations?
No, the 93AA86/SN performs fully self-timed erase and write cycles - no external capacitors, clocks, or delay circuits are needed. Once the final address or data bit is clocked in, the device internally manages the entire programming sequence (e.g., 3 ms typical per word, 15 ms max for ERAL). This simplifies system design, reduces BOM count, and ensures consistent timing across voltage and temperature variations - a key advantage of the 93AA86/SN over earlier parallel EEPROMs.
93AA86/SN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 16Kbit
- Memory Organization:
- 2K x 8, 1K x 16
- Memory Interface:
- Microwire
- Clock Frequency:
- 3 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- -
- Voltage - Supply:
- 1.8V ~ 6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
93AA86/SN FAQ
1.How can I place an order for 93AA86/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 93AA86/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 93AA86/SN reliable?
The price and inventory of 93AA86/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 93AA86/SN is usually 5 days.
3.What payment methods are accepted for 93AA86/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 93AA86/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 93AA86/SN?
93AA86/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 93AA86/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 93AA86/SN?
For technical support, including 93AA86/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 93AA86/SN requirements.
6.How does Aetrix verify that 93AA86/SN is sourced from the original manufacturer or authorized distributors?
All 93AA86/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 93AA86/SN meets industry standards.
7.What is the process for return or replacement of 93AA86/SN?
All 93AA86/SN units undergo pre-shipment inspection (PSI). If there is an issue with 93AA86/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 93AA86/SN part is unused and in its original packaging.
Return procedure for 93AA86/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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