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Microchip Technology 93AA86BT-I/OT
- Part No.:
- 93AA86BT-I/OT
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- SOT-23-6
- Datasheet:
-
93AA86BT-I/OT.pdf
- Description:
- IC EEPROM 16KBIT MICROWIRE SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,477
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Product details
Overview
93AA86BT-I/OT from Microchip Technology is a 16 Kbit low-voltage serial EEPROM with 2048 × 8-bit organization, Microwire-compatible 3-wire interface (CS/CLK/DI/DO), industrial temperature range (–40°C to +85°C), and 1.8–5.5 V supply. It delivers 1 million erase/write cycles, >200-year data retention, and integrated power-on/off data protection - used in embedded system configuration storage and calibration data logging.
For engineers reviewing the 93AA86BT-I/OT datasheet, 93AA86BT-I/OT pinout, 93AA86BT-I/OT application, or 93AA86BT-I/OT equivalent, key selection criteria include voltage compatibility (1.8–5.5 V), SOT-23-6 package footprint, 8-bit x2048 memory map, self-timed write/erase, and Ready/Busy status via DO pin during programming.
Technical Context
This device implements a synchronous serial Microwire interface with start-bit detection, opcode-driven command set (READ, WRITE, ERASE, EWEN/EWDS), and automatic erase-before-write logic. It uses internal address counters for sequential read and supports single-byte or full-array operations (ERAL/WRAL) with status polling via DO pin.
Unlike 'C' variants, the 93AA86B lacks ORG and PE pins - fixed 8-bit organization and always-enabled programming. Its SOT-23-6 package (OT suffix) places CS, CLK, DI, DO, VSS, and VCC on pins 1–6 respectively, with no dedicated PE or ORG terminals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 16 Kbit = 2048 × 8-bit organization - fits firmware ID, sensor offsets, or user settings in compact systems |
| Supply voltage | 1.8–5.5 V - interoperable with 1.8 V logic, 3.3 V microcontrollers, and 5 V legacy systems |
| Interface | Microwire 3-wire serial (CS/CLK/DI/DO) - minimal GPIO usage, no bidirectional bus contention |
| Write endurance | 1,000,000 cycles - supports daily field calibration updates for >27 years at 100 writes/day |
| Data retention | >200 years at 25°C - ensures lifetime data integrity without refresh in unpowered storage |
| Operating temp | –40°C to +85°C (Industrial grade) - qualified for automotive cabin, industrial PLC, and outdoor IoT nodes |
| Max clock frequency | 3 MHz at VCC ≥4.5 V - enables sub-100 µs byte reads and ~5 ms typical write latency |
Pinout & Package
Package: SOT-23-6 (OT suffix), 2.9 mm × 1.6 mm × 1.1 mm body, Pb-free matte tin finish, thermal pad optional (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CS | Chip Select | Active-high enable; must be held low ≥250 ns between commands; deselects device into standby mode |
| 2 - CLK | Serial Clock | Rising-edge synchronized I/O; stoppable mid-transfer; no clock required during self-timed write |
| 3 - DI | Data Input | Accepts start bit, opcodes, addresses, and write data; high-impedance when not selected |
| 4 - DO | Data Output / Status | Outputs read data or Ready/Busy (low = busy); enters High-Z on CS falling edge |
| 5 - VSS | Ground | Reference return path; must be low-impedance; shared with host system ground plane |
| 6 - VCC | Power Supply | 1.8–5.5 V input; internal POR triggers at ~1.5 V; decoupling capacitor required near pin |
Key Features
| Feature | Design Value |
|---|---|
| Self-timed erase/write | Eliminates external timing control - internal cycle completes in 5 ms (AA/LC) or 2 ms (C) without host CPU intervention |
| Ready/Busy status on DO | Enables non-blocking polling - host reads DO pin after CS high to determine completion instead of fixed delays |
| Power-on/off data protection | Hardware lockout below 1.5 V VCC prevents corruption during brown-out or hot-plug events |
| Sequential read mode | Auto-incrementing address counter allows burst reads across multiple bytes with single CS assertion |
| Industry-standard Microwire | Direct drop-in replacement for legacy 93AAxx/93LCxx parts - identical command set and timing behavior |
Applications
| Smart Meter Calibration Storage | Industrial PLC Configuration |
|---|---|
Use Scenario: Storing meter-specific gain/offset coefficients and tariff tables updated quarterly via secure firmware update. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during boot and calibration routines; operates at 1.8 V alongside ultra-low-power metrology SoC. Use Value: 2048 × 8-bit capacity holds 128 calibration points with metadata; >200-year retention avoids recalibration over product lifetime. | Use Scenario: Saving I/O mapping, PID loop parameters, and alarm thresholds in DIN-rail mounted controllers deployed in factory environments. IC Role / Device Role / Timing Role: System-level parameter store interfaced to ARM Cortex-M4 MCU via GPIO-banged Microwire; withstands vibration and wide ambient swings. Use Value: Industrial temp rating (–40°C to +85°C) and 1M-cycle endurance support 10+ years of daily parameter edits without wear-out. |
| Medical Sensor Module ID | Automotive Body Control Unit |
Use Scenario: Embedding unique serial number, sensor type, and calibration date in disposable patient monitoring sensors. IC Role / Device Role / Timing Role: Read-only identity tag during initialization; programmed once at manufacturing using standard SPI-to-Microwire adapter. Use Value: SOT-23-6 footprint minimizes PCB area; 1.8 V operation matches low-power sensor ASIC supply; RoHS-compliant for medical disposal. | Use Scenario: Storing seat position presets, mirror angles, and lighting profiles in vehicle door modules. IC Role / Device Role / Timing Role: Persistent user preference storage accessed during ignition-on sequence; survives battery disconnects and ESD transients. Use Value: Built-in power-loss protection prevents corruption during load-dump events; 5.5 V max rating tolerates automotive 12 V system spikes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 93AA86AT-I/OT | Same 2048×8-bit organization and SOT-23-6 package, but lacks ERAL/WRAL instructions and has no auto-erase before write | Not suitable for full-array initialization or robust field updates requiring guaranteed erase-before-write | Select only if application requires minimal instruction set and avoids bulk operations |
| 93LC86BT-I/OT | 2.5–5.5 V supply range (vs. 1.8–5.5 V); otherwise identical pinout, timing, and command set | Incompatible with 1.8 V logic domains; requires level-shifting or supply redesign in ultra-low-voltage systems | Choose when system already uses 2.5 V+ rails and needs same functionality with tighter VCC tolerance |
Compared with 93AA86AT-I/OT, the 93AA86BT-I/OT adds automatic erase-all and write-all commands essential for reliable field updates; versus 93LC86BT-I/OT, it extends down to 1.8 V for direct interfacing with modern low-power MCUs without voltage translation.
Availability
93AA86BT-I/OT is available at Aetrix Electronics and suitable for smart meter calibration storage, industrial PLC configuration, and medical sensor module ID requiring stable component supply across multi-year production cycles.
Supply support for 93AA86BT-I/OT 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 series targets cost-sensitive, low-power embedded systems needing reliable nonvolatile storage - designed specifically for industrial, medical, and consumer applications where small footprint, wide voltage range, and long-term data integrity are critical.
FAQ
What is the memory organization of the 93AA86BT-I/OT?
The 93AA86BT-I/OT features a fixed 2048 × 8-bit (16 Kbit) organization. Unlike 'C' variants, it has no ORG pin - the word size is permanently 8 bits. This simplifies design by eliminating external configuration logic and guarantees consistent addressing across all units of 93AA86BT-I/OT.
Does the 93AA86BT-I/OT support write protection?
The 93AA86BT-I/OT does not include a Program Enable (PE) pin or hardware write-protection circuitry. Programming is always enabled - write protection must be implemented externally via firmware control of the CS signal or system-level access permissions. This differs from 93AA86CT-I/OT, which uses the PE pin for hardware lockout.
What is the maximum clock frequency supported by the 93AA86BT-I/OT?
The 93AA86BT-I/OT supports up to 3 MHz clock frequency when VCC is 4.5–5.5 V, 2 MHz at 2.5–4.5 V, and 1 MHz at 1.8–2.5 V. These graded limits ensure reliable setup/hold timing across its full 1.8–5.5 V operating range, enabling use with both legacy 5 V and modern ultra-low-power microcontrollers.
How does the Ready/Busy status work on the 93AA86BT-I/OT?
The 93AA86BT-I/OT asserts Ready/Busy status on the DO pin: DO = low indicates active erase/write, DO = high signals completion. To read status, CS must be brought high for ≥250 ns after TCSL, then DO sampled - no additional clocking required. This enables efficient polling without fixed delay loops.
Is the 93AA86BT-I/OT compatible with standard Microwire controllers?
Yes, the 93AA86BT-I/OT is fully Microwire-compatible: it accepts standard start-bit detection, 2-bit opcodes (e.g., 10=READ, 01=WRITE), 11-bit addresses for 2048 locations, and supports sequential read. Its timing parameters (TCKH, TDIS, TPD) meet Microwire specification requirements across all VCC ranges.
93AA86BT-I/OT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 16Kbit
- Memory Organization:
- 1K 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
93AA86BT-I/OT FAQ
1.How can I place an order for 93AA86BT-I/OT through Aetrix?
Please submit a Request for Quotation (RFQ) for 93AA86BT-I/OT 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 93AA86BT-I/OT reliable?
The price and inventory of 93AA86BT-I/OT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 93AA86BT-I/OT is usually 5 days.
3.What payment methods are accepted for 93AA86BT-I/OT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 93AA86BT-I/OT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 93AA86BT-I/OT?
93AA86BT-I/OT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 93AA86BT-I/OT 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 93AA86BT-I/OT?
For technical support, including 93AA86BT-I/OT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 93AA86BT-I/OT requirements.
6.How does Aetrix verify that 93AA86BT-I/OT is sourced from the original manufacturer or authorized distributors?
All 93AA86BT-I/OT 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 93AA86BT-I/OT meets industry standards.
7.What is the process for return or replacement of 93AA86BT-I/OT?
All 93AA86BT-I/OT units undergo pre-shipment inspection (PSI). If there is an issue with 93AA86BT-I/OT, 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 93AA86BT-I/OT part is unused and in its original packaging.
Return procedure for 93AA86BT-I/OT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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