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Microchip Technology 93AA86BT-I/SN
- Part No.:
- 93AA86BT-I/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
93AA86BT-I/SN.pdf
- Description:
- IC EEPROM 16KBIT MICROWIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,103
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Product details
Overview
93AA86BT-I/SN from Microchip Technology is a 16 Kbit low-voltage serial EEPROM with 1024 × 16-bit organization, supporting 1.8–5.5 V operation and industrial temperature range (−40°C to +85°C). It features Microwire-compatible 3-wire serial interface (CS/CLK/DI/DO), automatic erase-before-write, and 1 million erase/write cycles. Used in embedded systems for parameter storage, calibration data retention, and configuration memory.
For engineers reviewing the 93AA86BT-I/SN datasheet, 93AA86BT-I/SN pinout, 93AA86BT-I/SN application, or 93AA86BT-I/SN equivalent, key selection considerations include its fixed 16-bit word size (no ORG pin), absence of PE/ORG pins, SOIC-8 package compatibility, and support for sequential read, ERAL, and WRAL commands under 1.8–5.5 V supply.
Technical Context
This device implements a synchronous Microwire-compatible serial interface with dedicated CS, CLK, DI, and DO lines. All instructions-including READ, WRITE, ERASE, ERAL, WRAL, EWEN, and EWDS-are clocked on the rising edge of CLK, with opcode/address/data validated per instruction set for x16 organization.
It operates in Standby mode when CS is low, enters active mode on CS high, and uses DO for both data output and Ready/Busy status polling during self-timed erase/write cycles. Power-on reset circuitry ensures data protection below 1.5 V VCC, and no external write-enable logic is required due to built-in EWEN/EWDS control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (1024 × 16-bit) - fixed x16 organization; no ORG pin; supports 16-bit data transfers per address. |
| VCC Range | 1.8 V to 5.5 V - enables direct interfacing with 1.8 V, 2.5 V, 3.3 V, and 5 V microcontrollers without level shifters. |
| Interface | Microwire-compatible 3-wire serial (CS/CLK/DI/DO) - requires only four signals; no SPI mode select or dual I/O overhead. |
| Write Endurance | 1,000,000 erase/write cycles - guarantees long-term reliability in firmware update or logging applications. |
| Data Retention | 200 years at +25°C - ensures nonvolatile storage integrity across product lifecycle without refresh. |
| Operating Temp | −40°C to +85°C (Industrial grade) - qualified for use in industrial control, metering, and automotive body electronics. |
| Max Clock Freq | 3 MHz at VCC ≥ 4.5 V - enables fast programming (typ. 5 ms per byte write) and efficient bulk reads. |
Pinout & Package
Package: 8-lead SOIC (SN), 3.9 mm × 4.9 mm body, standard JEDEC MS-012AC footprint, Pb-free Matte Tin finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CS | Chip Select | Active-high enable; must be held low ≥250 ns between instructions; forces Standby mode when low. |
| 2 - CLK | Serial Clock | Rising-edge synchronized timing for all data/opcodes; stoppable mid-transfer; no clock required during self-timed write. |
| 3 - DI | Data Input | Accepts Start bit, opcodes, addresses, and write data; tied high with CS to initiate instruction sequence. |
| 4 - DO | Data Output / Status | Outputs read data or Ready/Busy (low = busy); tri-states on CS falling edge; used for polling during ERASE/WRAL. |
| 5 - VSS | Ground | Reference return path for all digital and power circuits; must be low-impedance connection. |
| 6 - NC | No Connect | Not bonded; left unconnected per Microchip marking and pin function table for 93AA86B variants. |
| 7 - NC | No Connect | Not bonded; unused pin confirmed for 93AA86B (no ORG/PE pins); must not be tied to any voltage. |
| 8 - VCC | Power Supply | 1.8–5.5 V supply input; internal POR triggers at ~1.5 V; decoupling capacitor (0.1 µF) required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Self-timed Erase/Write | Eliminates external timing control; internal cycle completes in 5 ms (TWC) - simplifies host firmware. |
| Automatic ERAL before WRAL | WRAL command includes full-array erase prior to write - prevents stale data corruption without separate ERAL step. |
| Ready/Busy via DO pin | Enables non-blocking polling instead of fixed delays - reduces system latency and improves real-time responsiveness. |
| Low Standby Current | 1 µA typical (ICCS) at VCC = 2.5 V - critical for battery-powered devices requiring multi-year shelf life. |
| Power-On Data Protection | Hardware lockout below 1.5 V VCC - prevents inadvertent writes during brown-out or power ramp-up. |
Applications
| Industrial Sensor Calibration | Smart Meter Configuration |
|---|---|
Use Scenario: Storing factory-trimmed sensor gain/offset coefficients and field recalibration values in temperature/humidity sensors. IC Role / Device Role / Timing Role: Nonvolatile configuration memory holding 16-bit calibration parameters accessed at boot and during maintenance mode. Use Value: Enables single-device calibration traceability and field updates without firmware reflash; 200-year retention ensures accuracy over equipment lifetime. |
Use Scenario: Holding tariff tables, billing registers, communication settings, and tamper-event logs in electricity/water meters. IC Role / Device Role / Timing Role: Secure, low-power parameter store interfaced directly to metering SoC via Microwire. Use Value: 1M endurance supports daily log writes for >2700 years; 1.8 V min VCC allows operation during capacitor-backed brown-out events. |
| Automotive Body Control Module | Medical Device Settings |
Use Scenario: Saving user preferences (mirror position, seat memory), fault codes, and adaptive learning data in BCMs. IC Role / Device Role / Timing Role: Industrial-grade EEPROM interfaced to 3.3 V MCU for infrequent but mission-critical writes. Use Value: −40°C to +85°C rating matches under-hood ambient; no external write-protection logic needed due to EWEN/EWDS command set. |
Use Scenario: Storing FDA-mandated device configurations, usage counters, and calibration history in portable diagnostic tools. IC Role / Device Role / Timing Role: Certified nonvolatile memory for audit-trail data with deterministic write timing (5 ms max). Use Value: Microwire simplicity reduces BOM count vs. I²C; Pb-free SOIC-8 meets medical RoHS requirements without lead-free solder concerns. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 93LC86BT-I/SN | Same 1024 × 16-bit organization, but wider VCC range (2.5–5.5 V); no 1.8 V support. | Not suitable for 1.8 V systems; otherwise pin- and code-compatible for 3.3 V/5 V designs. | Select 93LC86BT-I/SN only if operating above 2.5 V and legacy 93LC qualification is required. |
| AT25128AN-10SU-2.7 | SPI interface (4-wire), 128 Kbit (16 K × 8), 2.7–5.5 V, 20 MHz clock; no ERAL/WRAL commands. | Requires SPI controller; larger capacity but lacks auto-erase-all and write-all primitives. | Choose only when higher density or faster SPI throughput is prioritized over Microwire simplicity and atomic array operations. |
Compared with 93LC86BT-I/SN, the 93AA86BT-I/SN enables true 1.8 V operation and retains identical timing and command structure; versus AT25128AN-10SU-2.7, it offers lower pin count, deterministic 5 ms writes, and hardware-accelerated bulk operations at the cost of density and speed.
Availability
93AA86BT-I/SN is available at Aetrix Electronics and suitable for industrial sensor calibration, smart meter configuration, and automotive body control modules requiring stable component supply, long-term obsolescence management, and RoHS-compliant sourcing.
Supply support for 93AA86BT-I/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 microcontroller, analog, and Flash-IP solutions, serving industrial, automotive, and consumer markets with high-reliability semiconductor products.
The 93AAxx series targets low-power, cost-sensitive embedded systems needing simple, robust serial EEPROM - designed specifically for Microwire interface simplicity, wide VCC tolerance, and guaranteed endurance in harsh environments.
FAQ
What is the memory organization of the 93AA86BT-I/SN?
The 93AA86BT-I/SN has a fixed 1024 × 16-bit (16 Kbit) organization. Unlike the 'C' variants, it lacks an ORG pin and is permanently configured for x16 operation - meaning each addressed location holds 16 bits, and all READ/WRITE instructions transfer 16-bit words. This eliminates external configuration logic and simplifies firmware handling of word-aligned data.
Does the 93AA86BT-I/SN support 1.8 V operation?
Yes, the 93AA86BT-I/SN supports full functionality across 1.8 V to 5.5 V VCC. Its DC characteristics (e.g., VIH/VIL thresholds, ICC write/read currents) are specified down to 1.8 V, enabling direct integration with modern ultra-low-voltage MCUs without level-shifting circuitry - a key differentiator from 93LC86B and 93C86B variants.
How does write protection work on the 93AA86BT-I/SN?
The 93AA86BT-I/SN uses command-based write protection via EWEN (Erase/Write Enable) and EWDS (Erase/Write Disable) instructions. It powers up in EWDS mode, blocking all ERASE/WRITE operations until EWEN is issued. After programming, issuing EWDS restores protection - no hardware PE pin is present, unlike 93AA86C, making software-controlled security mandatory and deterministic.
What is the maximum clock frequency supported by the 93AA86BT-I/SN?
The 93AA86BT-I/SN supports up to 3 MHz clock frequency when VCC is 4.5 V to 5.5 V. At 2.5–4.5 V, max frequency drops to 2 MHz; at 1.8–2.5 V, it is 1 MHz. These AC limits ensure reliable setup/hold timing (e.g., TDIS, TCKH) across voltage ranges - critical for stable communication with variable-speed controllers.
Can the 93AA86BT-I/SN perform bulk erase and write operations?
Yes, the 93AA86BT-I/SN supports ERAL (Erase All) and WRAL (Write All) commands. ERAL erases the entire 1024-word array in ≤6 ms; WRAL performs auto-erase followed by full-array write in ≤15 ms - both are self-timed and require no external delay loops. These commands are essential for factory initialization or secure data wiping.
93AA86BT-I/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:
- Not 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:
- 8-SOIC
93AA86BT-I/SN FAQ
1.How can I place an order for 93AA86BT-I/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 93AA86BT-I/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 93AA86BT-I/SN reliable?
The price and inventory of 93AA86BT-I/SN 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/SN is usually 5 days.
3.What payment methods are accepted for 93AA86BT-I/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 93AA86BT-I/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 93AA86BT-I/SN?
93AA86BT-I/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 93AA86BT-I/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 93AA86BT-I/SN?
For technical support, including 93AA86BT-I/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 93AA86BT-I/SN requirements.
6.How does Aetrix verify that 93AA86BT-I/SN is sourced from the original manufacturer or authorized distributors?
All 93AA86BT-I/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 93AA86BT-I/SN meets industry standards.
7.What is the process for return or replacement of 93AA86BT-I/SN?
All 93AA86BT-I/SN units undergo pre-shipment inspection (PSI). If there is an issue with 93AA86BT-I/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 93AA86BT-I/SN part is unused and in its original packaging.
Return procedure for 93AA86BT-I/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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