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Microchip Technology 11AA160T-I/TT
- Part No.:
- 11AA160T-I/TT
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
11AA160T-I/TT.pdf
- Description:
- IC EEPROM 16KBIT SGL WIRE SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:1,195
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Product details
Overview
11AA160T-I/TT from Microchip Technology is a 16 Kbit (2,048 × 8) serial EEPROM with UNI/O® single I/O bus 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 11AA160T-I/TT datasheet, 11AA160T-I/TT pinout, 11AA160T-I/TT application, or 11AA160T-I/TT equivalent, key selection factors include its 3-lead SOT-23 package, industrial temperature range (–40°C to +85°C), Manchester-encoded 100 kbps bus timing, built-in block write protection, and compatibility with microcontroller GPIO-based UNI/O® masters.
Technical Context
The 11AA160T-I/TT implements a Manchester-encoded, single-wire UNI/O® protocol where clock and data are embedded in the SCIO signal, enabling synchronization without dedicated clock lines. Its internal architecture includes a 16-byte page latch, STATUS register with WIP/WEL/BP bits, and current-limited slope-controlled output driver to suppress ground bounce.
It supports self-timed write cycles with auto-erase, block protection covering none/¼/½/all memory array, and re-synchronization circuitry tolerant of ±0.5% frequency drift per byte and ±0.06 UI edge jitter - critical for robust operation across voltage and temperature variation in low-pin-count designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Density | 16 Kbit (2,048 × 8 organization) - supports firmware parameter storage or calibration data tables in compact systems. |
| VCC Range | 1.8V to 5.5V - enables direct interfacing with 1.8V logic, 3.3V MCUs, and 5V legacy systems without level shifting. |
| Interface | Single I/O UNI/O® bus (Manchester encoded) - reduces PCB routing to one signal line plus VCC/VSS, ideal for pin-limited SoCs. |
| Page Size | 16 bytes - allows efficient burst writes up to full page; crossing physical page boundaries causes wraparound, requiring software alignment. |
| Write Endurance | 1,000,000 erase/write cycles - ensures long-term reliability in field-updatable configurations like sensor calibration or device configuration. |
| Data Retention | >200 years - guarantees nonvolatile storage integrity over product lifetime without refresh. |
| Temp Range | Industrial: –40°C to +85°C - qualified for deployment in industrial controls, metering, and automotive body electronics. |
| ESD Protection | >4,000V HBM - provides robust handling during assembly and operation in noisy environments. |
Pinout & Package
11AA160T-I/TT is housed in a 3-lead SOT-23 package (TT suffix), with SCIO serving as bidirectional serial clock/data I/O, VCC as supply input, and VSS as ground reference. No NC pins are present in this variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SCIO) | Serial Clock/Data I/O | Manchester-encoded bidirectional bus line - carries both clock and data; requires external pull-up; supports Schmitt-trigger input and slope-controlled output. |
| 2 (VSS) | Ground | Reference return path for all internal circuitry and SCIO driver; must be low-impedance to maintain noise immunity. |
| 3 (VCC) | Supply Voltage | Power input for EEPROM core and interface logic; accepts 1.8–5.5V; decoupling capacitor recommended near pin. |
Key Features
| Feature | Design Value |
|---|---|
| UNI/O® Single I/O Interface | Eliminates dedicated clock line and reduces MCU GPIO usage - simplifies layout and lowers BOM count in ultra-compact designs. |
| 16-Byte Page Write Buffer | Enables efficient multi-byte writes with single command overhead - cuts firmware execution time vs. byte-by-byte programming. |
| Status Register (WIP/WEL/BP) | Allows real-time monitoring of write progress and protection state - enables safe polling and dynamic lock/unlock control in runtime code. |
| Block Write Protection | Configurable via BP0/BP1 bits to protect 0%, 25%, 50%, or 100% of memory - prevents accidental overwrite of critical boot or calibration data. |
| Schmitt Trigger + Slope Control | Rejects high-frequency noise on SCIO and minimizes ground bounce during transitions - improves signal integrity on shared PCB traces. |
| 1 µA Max Standby Current (I-temp) | Extends battery life in always-on sensing nodes or energy-harvesting applications - meets stringent low-power design targets. |
Applications
| Smart Sensor Calibration | IoT Edge Device Configuration |
|---|---|
|
Use Scenario: Storing factory-trimmed offset/gain coefficients and temperature compensation tables in MEMS accelerometers or environmental sensors. IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed at power-up or during field recalibration; UNI/O® timing accommodates slow MCU GPIO bit-banging. Use Value: Enables accurate sensor output without external precision references; 1.8V operation matches low-voltage sensor signal chains. |
Use Scenario: Holding Wi-Fi credentials, OTA update flags, and user preferences in battery-powered BLE modules or LoRaWAN end-nodes. IC Role / Device Role / Timing Role: Secure, low-pin-count configuration store; STATUS register WIP bit allows safe background writes without blocking main application loop. Use Value: Reduces footprint vs. SPI EEPROMs; 1 µA standby current extends multi-year battery life in maintenance-free deployments. |
| Industrial PLC I/O Module Setup | Medical Diagnostic Equipment Settings |
|
Use Scenario: Saving channel-specific scaling factors, alarm thresholds, and module identification in DIN-rail mounted I/O expanders. IC Role / Device Role / Timing Role: Robust configuration memory with block protection - prevents corruption during hot-swap or ESD events on factory floor. Use Value: Schmitt trigger inputs and >4kV ESD rating ensure reliable operation in electrically noisy industrial environments. |
Use Scenario: Storing FDA-mandated calibration logs, user-defined test protocols, and device serial history in portable ultrasound or glucose meters. IC Role / Device Role / Timing Role: Certified nonvolatile memory for audit-trail data; >200-year retention satisfies medical device regulatory requirements. Use Value: Eliminates need for external backup power or supercapacitors - simplifies safety-critical power architecture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 11AA161T-I/TT | Same density and package, but uses device address 0xA1 instead of 0xA0 - enables dual-device bus sharing without conflict. | Required when multiple 16K UNI/O® EEPROMs must coexist on same SCIO line. | Select 11AA161T-I/TT only if bus address diversity is needed; otherwise 11AA160T-I/TT offers identical functionality at standard address. |
| AT21CS11-MAH-T | 1-Kbit I²C EEPROM in same SOT-23-3 package; lacks UNI/O®, requires two I/Os (SCL/SDA); lower density but higher write speed (400 kHz). | Suitable for I²C-native systems where pin count allows separate clock/data lines and density needs are modest. | Choose AT21CS11-MAH-T only if existing design uses I²C infrastructure; 11AA160T-I/TT provides higher density and single-wire advantage where GPIO is scarce. |
Compared with 11AA160T-I/TT, 11AA161T-I/TT adds bus address flexibility at no cost to performance or package, while AT21CS11-MAH-T trades single-wire simplicity for I²C compatibility and reduced capacity - making 11AA160T-I/TT optimal for new ultra-low-pin-count designs demanding 16 Kbit.
Availability
11AA160T-I/TT is available at Aetrix Electronics and suitable for industrial controls, medical diagnostics, and IoT edge devices requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for 11AA160T-I/TT 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 components, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 11AAxxx family was designed specifically for ultra-low-pin-count embedded systems needing reliable, low-power serial EEPROM - emphasizing single-wire simplicity, wide voltage operation, and industrial-grade reliability.
FAQ
What is the UNI/O® bus interface used by the 11AA160T-I/TT?
The 11AA160T-I/TT uses Microchip's patented UNI/O® bus - a single-wire, Manchester-encoded serial interface where clock and data are embedded in the SCIO signal. This eliminates the need for a separate clock line, reducing MCU pin count and PCB routing complexity while maintaining deterministic timing through master-controlled bit periods and slave re-synchronization.
Does the 11AA160T-I/TT support write protection, and how is it configured?
Yes, the 11AA160T-I/TT supports hardware-configurable block write protection via BP0 and BP1 bits in its STATUS register. These bits - set using the WRSR instruction - enable protection of 0%, 25%, 50%, or 100% of the memory array. Protection is nonvolatile and persists across power cycles, preventing accidental overwrite of critical calibration or configuration data stored in the 11AA160T-I/TT.
What is the maximum write speed and page size of the 11AA160T-I/TT?
The 11AA160T-I/TT supports a maximum bus frequency of 100 kHz (100 kbps effective bit rate) and features a 16-byte page write buffer. Each write cycle completes in ≤10 ms (byte or page). The 16-byte page size allows efficient burst writes, but crossing physical page boundaries (every 16-byte aligned address) causes wraparound - requiring firmware to align writes within page boundaries for predictable behavior in the 11AA160T-I/TT.
Can the 11AA160T-I/TT operate from a 1.8V supply, and what are its current consumption specs?
Yes, the 11AA160T-I/TT operates from 1.8V to 5.5V. At 1.8V, its typical active read current is 1 mA and max standby current is 1 µA (industrial temperature range). These low-power characteristics make it suitable for battery-powered applications, and its 1.8V minimum VCC enables direct interfacing with modern low-voltage MCUs without level-shifting circuitry in the 11AA160T-I/TT design.
What packages and temperature grades are available for the 11AA160T-I/TT?
The 11AA160T-I/TT is specified for the industrial temperature range (–40°C to +85°C) and packaged exclusively in the 3-lead SOT-23 (TT) variant. Unlike other members of the 11AAxxx family, it does not offer PDIP, SOIC, MSOP, TDFN, or Chip Scale options - the TT suffix explicitly denotes this compact, surface-mount SOT-23 configuration for the 11AA160T-I/TT.
11AA160T-I/TT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- 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:
- SOT-23-3
11AA160T-I/TT FAQ
1.How can I place an order for 11AA160T-I/TT through Aetrix?
Please submit a Request for Quotation (RFQ) for 11AA160T-I/TT 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 11AA160T-I/TT reliable?
The price and inventory of 11AA160T-I/TT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 11AA160T-I/TT is usually 5 days.
3.What payment methods are accepted for 11AA160T-I/TT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 11AA160T-I/TT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 11AA160T-I/TT?
11AA160T-I/TT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 11AA160T-I/TT 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 11AA160T-I/TT?
For technical support, including 11AA160T-I/TT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 11AA160T-I/TT requirements.
6.How does Aetrix verify that 11AA160T-I/TT is sourced from the original manufacturer or authorized distributors?
All 11AA160T-I/TT 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 11AA160T-I/TT meets industry standards.
7.What is the process for return or replacement of 11AA160T-I/TT?
All 11AA160T-I/TT units undergo pre-shipment inspection (PSI). If there is an issue with 11AA160T-I/TT, 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 11AA160T-I/TT part is unused and in its original packaging.
Return procedure for 11AA160T-I/TT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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