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Microchip Technology 11AA160-I/SN
- Part No.:
- 11AA160-I/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
11AA160-I/SN.pdf
- Description:
- IC EEPROM 16KBIT SGL WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,439
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Product details
Overview
11AA160-I/SN from Microchip Technology Inc. is a 16 Kbit (2,048 × 8) serial EEPROM with single I/O UNI/O® interface, operating from 1.8V to 5.5V, featuring 16-byte page write buffer, 1 µA max standby current (I-temp), and Schmitt-trigger SCIO input for noise immunity in space-constrained embedded systems.
For engineers reviewing the 11AA160-I/SN datasheet, 11AA160-I/SN pinout, 11AA160-I/SN application, or 11AA160-I/SN equivalent, key selection considerations include its 1.8V low-voltage operation, UNI/O® bus compatibility with discrete GPIOs, industrial temperature range (–40°C to +85°C), and block write protection configuration via STATUS register.
Technical Context
The 11AA160-I/SN implements Manchester-encoded UNI/O® protocol over a single bidirectional SCIO line, eliminating need for separate clock and data lines. It uses internal re-synchronization circuitry tolerant to ±0.50% bus frequency drift per byte and ±0.06 UI edge jitter, enabling robust communication with low-cost microcontrollers lacking dedicated serial peripherals.
Internally, it integrates a 16-byte page latch, high-voltage generator for EEPROM programming, and STATUS register with WIP/WEL/BP bits. Write operations are self-timed (max 10 ms), with automatic erase before write, and support full-array erase (ERAL) or fill (SETAL) commands.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Density | 16 Kbit (2,048 × 8 organization) - supports firmware parameter storage or calibration data logging in compact nodes |
| VCC Range | 1.8V to 5.5V - enables direct interfacing with 1.8V/3.3V/5V logic without level shifters |
| Interface | Single I/O UNI/O® bus - reduces PCB routing to one signal plus VCC/VSS, ideal for pin-limited MCUs |
| Page Size | 16 bytes - allows efficient burst writes without exceeding physical page boundaries (0x00–0x0F, 0x10–0x1F, etc.) |
| Endurance | 1,000,000 erase/write cycles - supports frequent field-updatable configuration in industrial controllers |
| Data Retention | >200 years at 85°C - ensures long-term reliability in unattended equipment |
| Temp Range | Industrial: –40°C to +85°C - qualified for factory automation, metering, and building control environments |
Pinout & Package
11AA160-I/SN is packaged in 8-lead SOIC (SN) with standard pinout: Pin 1 = VSS, Pin 2 = NC, Pin 3 = NC, Pin 4 = NC, Pin 5 = VCC, Pin 6 = NC, Pin 7 = NC, Pin 8 = SCIO. The NC pins are no-connect and must remain unconnected per datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS (Pin 1) | Ground reference | Return path for all internal currents; must be low-impedance connection to system GND plane |
| VCC (Pin 5) | Supply voltage input | Power source for EEPROM core and interface logic; requires local 0.1 µF decoupling capacitor |
| SCIO (Pin 8) | Serial Clock/Data I/O | Bidirectional Manchester-encoded bus line; driven by master for clock/data, by slave for ACK; includes slope control to suppress ground bounce |
Key Features
| Feature | Design Value |
|---|---|
| UNI/O® Serial Interface | Single-wire bus eliminates clock line routing, reducing BOM count and layout complexity in ultra-compact designs |
| Schmitt Trigger Input on SCIO | Hysteresis ≥0.05×VCC rejects noise spikes up to 50 ns, ensuring reliable communication in electrically noisy industrial settings |
| Page Write Buffer | 16-byte buffer enables atomic multi-byte updates without intermediate read-modify-write sequences |
| Status Register Control | WEL bit enables/disables writes; BP0/BP1 bits configure 0%, 25%, 50%, or 100% array protection - configurable in-system without hardware changes |
| Low-Power Operation | 1 µA max standby current at 85°C extends battery life in portable instrumentation and sensor nodes |
Applications
| Smart Sensor Calibration | Industrial PLC Configuration |
|---|---|
Use Scenario: Storing temperature-compensation coefficients and sensor offset values during factory calibration of MEMS pressure sensors. IC Role / Device Role / Timing Role: Nonvolatile parameter storage with guaranteed 200-year retention and 1M endurance for field recalibration cycles. Use Value: Eliminates need for external OTP or flash memory; 1.8V operation matches low-power sensor signal chain supply rails. |
Use Scenario: Holding user-defined I/O mapping tables and alarm thresholds in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Configuration EEPROM accessed via GPIO bit-banging on legacy MCU with no dedicated SPI/I²C peripheral. Use Value: UNI/O® interface reduces required MCU pins from 4 (SPI) to 1, freeing resources for additional analog inputs or communication ports. |
| Medical Device Settings | Consumer Appliance State Memory |
Use Scenario: Saving patient-specific therapy parameters and usage logs in portable infusion pumps between power cycles. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage with block write protection preventing accidental overwrite of critical safety settings. Use Value: STATUS register BP bits allow locking 50% of memory (e.g., first 1K) while leaving remaining space open for dynamic log entries. |
Use Scenario: Retaining cooking mode preferences and timer presets in smart ovens after AC power loss. IC Role / Device Role / Timing Role: Low-quiescent-current nonvolatile memory supporting rapid wake-from-standby (<600 µs standby pulse recovery). Use Value: 1 µA max standby current minimizes energy drain on backup supercapacitors during extended power outages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C128C-SSHM-T | I²C interface (2-wire), 128 Kbit density, 1.7V–5.5V, no built-in page wrap detection | Requires dedicated I²C peripheral; higher density but larger footprint (8-lead SOIC same size, but different pinout) | Select when existing design uses I²C infrastructure and needs >16 Kbit capacity |
| 24AA16BT-I/OT | SOT-23-6 package, same 16 Kbit/UNI/O®/1.8V–5.5V specs, but only 3-pin SOT-23 variant (VSS, VCC, SCIO) | Smaller footprint (2.9 mm × 1.6 mm vs SOIC's 4.9 mm × 3.9 mm); no NC pins - simplifies layout but removes mechanical alignment reference | Select when board area is constrained and 3-pin simplicity outweighs SOIC's handling advantages |
Compared with AT24C128C-SSHM-T and 24AA16BT-I/OT, the 11AA160-I/SN uniquely combines SOIC-8 mechanical robustness, UNI/O® single-wire efficiency, and industrial temperature qualification - making it optimal for retrofitting legacy GPIO-based systems without redesigning communication firmware or PCB layout.
Availability
11AA160-I/SN is available at Aetrix Electronics and suitable for industrial automation, medical device configuration, and consumer appliance state retention requiring stable component supply across extended product lifecycles.
Supply support for 11AA160-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 U.S.-based semiconductor company specializing in microcontrollers, analog devices, and memory solutions for embedded control applications.
The 11AA160-I/SN belongs to Microchip's UNI/O® serial EEPROM family, designed specifically to simplify nonvolatile memory integration in resource-constrained microcontroller systems using minimal GPIO resources.
FAQ
What is the UNI/O® interface used by the 11AA160-I/SN?
The 11AA160-I/SN uses Microchip's patented UNI/O® bus - a single-wire, Manchester-encoded serial interface where clock and data share the SCIO line. This eliminates separate clock lines, allowing bit-banged implementation on any GPIO-capable MCU. The 11AA160-I/SN supports up to 100 kbps (100 kHz equivalent) with built-in re-synchronization to tolerate frequency drift and edge jitter.
Does the 11AA160-I/SN require external components for basic operation?
No external components are required for basic 11AA160-I/SN operation beyond standard power supply decoupling. A 0.1 µF ceramic capacitor between VCC and VSS is recommended. The SCIO line may optionally include a pull-up resistor (typically 4.7 kΩ to VCC) depending on master drive strength and bus capacitance, but the 11AA160-I/SN's internal slope control and Schmitt trigger reduce dependency on external termination.
How does write protection work on the 11AA160-I/SN?
Write protection on the 11AA160-I/SN is controlled via two nonvolatile BP0/BP1 bits in the STATUS register, set using the WRSR command. These bits enable four protection modes: no protection (00), top 1/4 (01), top 1/2 (10), or full array (11). Protection is hardware-enforced - attempts to write protected blocks return NoSAK, and the WEL bit must be set via WREN before any unprotected write can proceed.
What is the maximum write cycle time for the 11AA160-I/SN?
The 11AA160-I/SN has a maximum write cycle time of 10 ms for both byte and page writes, as specified in DS22067J-page 4 (Parameter D13). This includes auto-erase and programming. During this time, the WIP bit in the STATUS register reads '1'; polling RDSR is the recommended method to detect completion rather than fixed delays.
Can the 11AA160-I/SN be used in automotive applications?
The 11AA160-I/SN is rated for Industrial temperature range (–40°C to +85°C) only. For automotive applications requiring –40°C to +125°C, Microchip offers the pin-compatible 11LC160-I/SN (same 16 Kbit density, 2.5V–5.5V VCC, AEC-Q100 qualified). The 11AA160-I/SN itself is not automotive-qualified and should not be deployed in under-hood or other high-temperature automotive subsystems.
11AA160-I/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:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 16Kbit
- Memory Organization:
- 2K x 8
- Memory Interface:
- Single Wire
- Clock Frequency:
- 100 kHz
- 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
11AA160-I/SN FAQ
1.How can I place an order for 11AA160-I/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 11AA160-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 11AA160-I/SN reliable?
The price and inventory of 11AA160-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 11AA160-I/SN is usually 5 days.
3.What payment methods are accepted for 11AA160-I/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 11AA160-I/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 11AA160-I/SN?
11AA160-I/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 11AA160-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 11AA160-I/SN?
For technical support, including 11AA160-I/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 11AA160-I/SN requirements.
6.How does Aetrix verify that 11AA160-I/SN is sourced from the original manufacturer or authorized distributors?
All 11AA160-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 11AA160-I/SN meets industry standards.
7.What is the process for return or replacement of 11AA160-I/SN?
All 11AA160-I/SN units undergo pre-shipment inspection (PSI). If there is an issue with 11AA160-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 11AA160-I/SN part is unused and in its original packaging.
Return procedure for 11AA160-I/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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