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Microchip Technology 93AA86T/SN
- Part No.:
- 93AA86T/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
93AA86T/SN.pdf
- Description:
- IC EEPROM 16KBIT MICROWIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,852
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Product details
Overview
93AA86T/SN from Microchip Technology Inc. is a 16K-bit (2048 × 8 or 1024 × 16) low-voltage serial EEPROM with Microwire interface, single-supply operation down to 1.8V, 1 mA typical active current, and 5 µA standby current at 3.0V. It features ORG-pin-selectable memory organization, self-timed erase/write cycles, and integrated power-on/off data protection - deployed in industrial control panels for nonvolatile parameter storage.
For engineers reviewing the 93AA86T/SN datasheet, 93AA86T/SN pinout, 93AA86T/SN application, or 93AA86T/SN equivalent, this page delivers verified electrical specs, validated SOIC-8 pin mapping, confirmed x8/x16 configuration behavior, endurance and retention metrics, and two manufacturer-validated alternative parts for legacy design continuity.
Technical Context
The 93AA86T/SN implements a synchronous 3-wire Microwire interface (CS/CLK/DI/DO) with start-bit detection and opcode-driven command execution. Its internal logic supports six instructions - READ, WRITE, ERASE, EWEN, EWDS, ERAL, and WRAL - all synchronized to the rising edge of CLK, with DO providing real-time Ready/Busy status during programming.
Memory organization is dynamically selected via the ORG pin: tied to VCC enables 1024 × 16-bit mode; tied to VSS enables 2048 × 8-bit mode. The PE pin provides hardware write-enable control, with internal pull-up ensuring programmability when floating; VSS on PE disables all erase/write functions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory capacity | 16 Kbit (2048 × 8 or 1024 × 16), selectable via ORG pin - enables flexible byte- or word-oriented firmware storage |
| Supply voltage range | 1.8V to 6.0V - supports direct integration into 1.8V, 3.3V, and 5V systems without level-shifting |
| Write endurance | 1,000,000 erase/write cycles - ensures reliable field updates over product lifetime in metering or calibration applications |
| Data retention | Greater than 200 years at 25°C - guarantees long-term parameter integrity in unpowered storage |
| Max clock frequency | 3 MHz at VCC ≥ 4.5V; 2 MHz at 2.5V ≤ VCC < 4.5V; 1 MHz at 1.8V ≤ VCC < 2.5V - defines maximum serial throughput per supply condition |
| Active/standby current | 1 mA typical active (5.5V); 5 µA typical standby (3.0V) - enables ultra-low-power operation in battery-backed systems |
| Program cycle time | 5 ms typical per word (WRITE/ERASE); 15 ms max for ERAL; 30 ms max for WRAL - determines minimum latency for configuration writes |
Pinout & Package
8-pin Plastic Small Outline (SOIC-8, 150 mil body), JEDEC MS-012 compliant, Pb-free matte tin finish. Marked "/SN" per Microchip's packaging nomenclature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-high enable; must be held low ≥250 ns between instructions; initiates Standby mode when low |
| CLK | Serial Clock | Synchronizes all data transfers on rising edge; stops/resumes freely outside active instruction windows |
| DI | Data Input | Accepts Start bit, opcodes, addresses, and write data; high-impedance when CS low |
| DO | Data Output / Status | Outputs read data or Ready/Busy (low = busy) during programming; high-Z when CS low or idle |
| VSS | Ground | Reference return path for all signals and power; required for stable logic thresholds and leakage control |
| PE | Program Enable | Hardware write lock: VSS disables all erase/write; floating or VCC enables - internal pull-up ensures default writability |
| VCC | Power Supply | Single 1.8–6.0V supply; powers internal logic, memory array, and I/O buffers; includes brown-out protection |
| ORG | Memory Organization | Selects 2048×8 (ORG=VSS) or 1024×16 (ORG=VCC); internal pull-up defaults to x16 mode if unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Self-timed erase/write | Eliminates external timing circuitry; device manages internal programming voltage and duration autonomously |
| Automatic ERAL before WRAL | Ensures full array erasure prior to bulk write - prevents partial-write corruption without software intervention |
| Power-on/off data protection | Hardware inhibition below 1.4V VCC prevents accidental writes during power ramp-up/down transients |
| Sequential read mode | Enables continuous address increment and streaming reads while CS remains high - reduces host overhead |
| Status polling via DO | Allows host to monitor programming progress without dedicated status register access - simplifies firmware |
Applications
| Industrial Sensor Calibration | Medical Device Configuration |
|---|---|
Use Scenario: Storing calibrated offset/gain coefficients for analog sensor front-ends in factory-set medical monitors. IC Role / Device Role / Timing Role: Nonvolatile parameter storage with infrequent writes and guaranteed 200-year retention. Use Value: Eliminates need for battery-backed SRAM; withstands repeated sterilization cycles due to robust SOIC package and wide temperature tolerance. |
Use Scenario: Holding user-selected therapy parameters (e.g., dosage limits, alarm thresholds) in portable infusion pumps. IC Role / Device Role / Timing Role: Secure, low-power configuration memory accessible via simple 3-wire interface during boot or menu navigation. Use Value: Enables tamper-resistant settings storage with hardware write-protection (PE pin) and automatic power-fail protection. |
| Automotive Body Control Module | Smart Energy Meter Firmware Patch Storage |
Use Scenario: Retaining seat/mirror position presets and lighting profiles across ignition cycles in entry-level BCMs. IC Role / Device Role / Timing Role: Low-voltage (1.8V–5.5V) serial EEPROM interfaced directly to 8-bit microcontroller GPIOs. Use Value: Supports direct connection to 3.3V MCU without level shifters; 1 mA active current minimizes parasitic drain on vehicle battery. |
Use Scenario: Storing field-upgradable firmware patches in utility-grade electricity meters operating in harsh outdoor environments. IC Role / Device Role / Timing Role: High-endurance (1M cycles), long-retention memory for secure patch validation and rollback support. Use Value: Enables safe over-the-air updates with atomic WRAL/ERAL operations and hardware write-lock (PE) to prevent corruption during power loss. |
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 rating (6 kV HBM vs. 4 kV) and updated AC timing specs; same SOIC-8 package and instruction set. | Required for new designs per Microchip's "Not recommended for new designs" notice on 93AA86T/SN; supports higher noise immunity in industrial environments. | Select 93AA86C/SN for new designs requiring extended lifecycle support and improved robustness; migration requires no PCB changes. |
| AT25040B-MAHL-T | 4-Kbit SPI EEPROM (vs. 16-Kbit Microwire); different protocol (SPI vs. Microwire), no ORG pin, 2.5–5.5V supply, 10M endurance. | Applicable where SPI interface is already used and lower density suffices; not suitable for ORG-dependent x16 word-access use cases. | Choose only if existing system uses SPI and 4-Kbit capacity meets requirements; protocol and pinout incompatibility precludes drop-in replacement. |
Compared with 93AA86T/SN, the 93AA86C/SN offers identical functionality with improved ESD and timing - making it the direct upgrade path - while the AT25040B-MAHL-T serves distinct SPI-based designs but lacks ORG-selectable organization and Microwire compatibility.
Availability
93AA86T/SN is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, and automotive body control modules requiring stable component supply and long-term obsolescence management.
Supply support for 93AA86T/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, FPGA, and memory solutions, founded in 1989 and headquartered in Chandler, Arizona.
The 93AAxx family was designed specifically for cost-sensitive, low-power embedded systems requiring reliable serial nonvolatile memory with minimal external components and broad voltage operation.
FAQ
What is the function of the ORG pin on the 93AA86T/SN?
The ORG pin on the 93AA86T/SN selects memory organization: tied to VSS configures the device as 2048 × 8-bit; tied to VCC configures it as 1024 × 16-bit. An internal pull-up resistor defaults to x16 mode if ORG is left unconnected. This pin directly controls address width and data bus width during READ/WRITE operations, and its state is sampled at power-up and instruction execution.
Does the 93AA86T/SN support sequential read, and how is it enabled?
Yes, the 93AA86T/SN supports sequential read: after issuing a READ instruction, holding CS high while continuing CLK transitions causes the internal address pointer to auto-increment and output consecutive memory locations on DO. No additional instructions are needed - the feature is inherent to the READ command timing and requires no separate enable signal.
How does the PE pin affect write operations on the 93AA86T/SN?
The PE pin on the 93AA86T/SN acts as a hardware write gate: when tied to VSS, all erase and write functions are disabled regardless of EWEN status; when floating or tied to VCC, programming is permitted. An internal pull-up ensures write capability by default, making PE a fail-safe mechanism against unintended writes during system faults.
What is the maximum clock frequency supported by the 93AA86T/SN at 3.3V supply?
At VCC = 3.3V, the 93AA86T/SN supports a maximum clock frequency of 2 MHz, as specified in Table 1-2 (AC Characteristics) for the 2.5V ≤ VCC < 4.5V range. Exceeding this frequency risks setup/hold violations and unreliable instruction execution, especially during high-speed WRITE or ERASE commands.
Is the 93AA86T/SN RoHS-compliant, and what does the "/SN" suffix indicate?
Yes, the 93AA86T/SN is RoHS-compliant and Pb-free, with matte tin (Sn) plating per JEDEC standard. The "/SN" suffix explicitly denotes the 8-lead plastic SOIC (150 mil body) package per Microchip's Product Identification System - distinguishing it from PDIP ("/P") and confirming surface-mount compatibility.
93AA86T/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:
- 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
93AA86T/SN FAQ
1.How can I place an order for 93AA86T/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 93AA86T/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 93AA86T/SN reliable?
The price and inventory of 93AA86T/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 93AA86T/SN is usually 5 days.
3.What payment methods are accepted for 93AA86T/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 93AA86T/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 93AA86T/SN?
93AA86T/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 93AA86T/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 93AA86T/SN?
For technical support, including 93AA86T/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 93AA86T/SN requirements.
6.How does Aetrix verify that 93AA86T/SN is sourced from the original manufacturer or authorized distributors?
All 93AA86T/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 93AA86T/SN meets industry standards.
7.What is the process for return or replacement of 93AA86T/SN?
All 93AA86T/SN units undergo pre-shipment inspection (PSI). If there is an issue with 93AA86T/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 93AA86T/SN part is unused and in its original packaging.
Return procedure for 93AA86T/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
93AA86T/SN Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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24LC01BT-I/OT
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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AT24C08C-STUM-T
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