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Microchip Technology 11AA160-I/S16K
- Part No.:
- 11AA160-I/S16K
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- Die
- Datasheet:
-
11AA160-I/S16K.pdf
- Description:
- IC EEPROM 16KBIT SGL WIRE DIE
- Quantity:
- Payment:
- Shipping:
Inventory:2,037
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Product details
Overview
11AA160-I/S16K 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 built-in block write protection for industrial embedded systems requiring low-pin-count nonvolatile storage.
For engineers reviewing the 11AA160-I/S16K datasheet, 11AA160-I/S16K pinout, 11AA160-I/S16K application, or 11AA160-I/S16K equivalent, key selection considerations include UNI/O® bus timing compliance, 1.8V minimum VCC support, 16-byte page boundary handling, Schmitt-trigger noise immunity on SCIO, and STATUS register monitoring for WIP/WEL status during write operations.
Technical Context
The 11AA160-I/S16K implements Manchester-encoded UNI/O® protocol over a single bidirectional SCIO line, using master-controlled bit timing with slave re-synchronization on every MAK edge. It supports up to 100 kbps (100 kHz equivalent) with ±0.06 UI input jitter tolerance and ±0.5% per-byte frequency drift tolerance.
Internally, it integrates a 16-byte page latch, STATUS register with WIP/WEL/BP bits, high-voltage generator for EEPROM programming, and slope-controlled output driver to suppress ground bounce. Write cycles are self-timed (max 10 ms), with automatic erase before write and built-in power-on/off data protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Density | 16 Kbit (2,048 × 8 organization) |
| VCC Range | 1.8V–5.5V - enables direct interfacing with 1.8V logic and mixed-voltage systems |
| Interface | Single I/O UNI/O® bus - reduces PCB routing to one signal plus VCC/VSS |
| Page Size | 16 bytes - defines maximum atomic write length; crossing page boundaries causes wraparound |
| Write Endurance | 1,000,000 cycles per page - supports frequent configuration updates in field-deployed devices |
| Data Retention | >200 years - ensures long-term reliability without refresh in battery-backed or maintenance-free applications |
| Standby Current | 1 µA max (I-temp) - critical for always-on IoT sensors and energy-harvesting nodes |
| Bus Frequency | 10–100 kHz - compatible with low-speed MCU GPIO bit-banging without dedicated hardware peripherals |
Pinout & Package
11AA160-I/S16K is supplied in an 8-lead SOIC package (S16K suffix). The device uses three active terminals: SCIO (bidirectional serial clock/data), VCC (supply), and VSS (ground); two pins are NC (no connect).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCIO | Serial Clock/Data I/O | Manchester-encoded bidirectional bus line - requires external pull-up; handles all command, address, data, and ACK traffic |
| VCC | Supply Voltage | 1.8V–5.5V input - powers internal HV generator and logic; must be stable during write cycles |
| VSS | Ground Reference | Return path for all currents - must be low-impedance to maintain Schmitt trigger hysteresis and output slope control |
| NC (Pin 2, 3, 6, 7) | No Connect | Unbonded die pads - no electrical function; must remain unconnected per Microchip design |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt Trigger Inputs | 0.05×VCC hysteresis on SCIO - rejects EMI and supply noise in noisy industrial environments |
| Output Slope Control | Current-limited SCIO driver - eliminates ground bounce during fast transitions, improving signal integrity |
| Status Register Access | Real-time WIP/WEL/BP read via RDSR command - enables polling without blocking MCU execution |
| Block Write Protection | Configurable 0%, 25%, 50%, or 100% array lock via BP0/BP1 bits - prevents accidental firmware or calibration overwrite |
| Power-On Data Protection | Hardware latch prevents writes during power ramp-up/down - eliminates corruption during brownout conditions |
Applications
| Smart Sensor Calibration Storage | Industrial PLC Configuration Memory |
|---|---|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients in battery-powered environmental monitors. IC Role / Device Role / Timing Role: Nonvolatile parameter store accessed infrequently via UNI/O® bus during initialization or recalibration. Use Value: 1.8V operation enables direct connection to low-power ADCs/MCUs; 1 µA standby current extends multi-year battery life. | Use Scenario: Holding user-defined I/O mapping and alarm thresholds in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Industrial-grade configuration EEPROM interfaced to 3.3V microcontroller GPIO with noise-immune SCIO line. Use Value: Schmitt-trigger inputs and slope control ensure reliable communication in electrically noisy factory floors with variable ground potentials. |
| Medical Device Usage Logs | Consumer Appliance Firmware Settings |
Use Scenario: Recording sterilization cycle counts and maintenance timestamps in portable diagnostic equipment. IC Role / Device Role / Timing Role: Tamper-resistant event logger using STATUS register WIP polling to confirm write completion before power-down. Use Value: 1M endurance and >200-year retention guarantee data integrity across product lifetime without backup power. | Use Scenario: Saving user preferences (e.g., temperature setpoints, display brightness) in smart home thermostats and ovens. IC Role / Device Role / Timing Role: Low-pin-count memory co-located with MCU on compact appliance control boards. Use Value: Single SCIO pin reduces BOM count and layout complexity versus I²C/SPI alternatives, lowering manufacturing cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 11LC160-I/SN | Same density and UNI/O® interface, but 2.5–5.5V VCC range - lacks 1.8V support | Requires ≥2.5V system rail; unsuitable for 1.8V logic domains | Select only if host operates at ≥2.5V and lower quiescent current is not required |
| 24AA16-I/SN | I²C interface (2-wire), 1.8–5.5V, 16 Kbit - different protocol, no UNI/O® compatibility | Needs SCL/SDA lines and pull-ups; incompatible with existing UNI/O® firmware | Choose when migrating to standard I²C infrastructure or adding multiple slaves with unique addresses |
Compared with 11LC160-I/SN, the 11AA160-I/S16K enables true 1.8V operation and lower standby current; compared with 24AA16-I/SN, it preserves single-wire simplicity and eliminates I²C arbitration overhead, though requiring UNI/O®-specific driver code.
Availability
11AA160-I/S16K is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostics, smart sensors, and consumer appliance control systems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for 11AA160-I/S16K 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 products for embedded control applications.
The 11AA160-I/S16K belongs to Microchip's UNI/O® Serial EEPROM family, designed specifically for space-constrained, low-power systems needing minimal GPIO usage and robust noise immunity in harsh environments.
FAQ
What is the UNI/O® interface used by the 11AA160-I/S16K?
The 11AA160-I/S16K uses Microchip's patented UNI/O® bus - a single-wire, Manchester-encoded serial interface where clock and data share the SCIO line. It requires no dedicated clock line, supports up to 100 kbps, and features built-in re-synchronization to tolerate master clock drift and edge jitter. This simplifies PCB layout and reduces MCU pin count versus I²C or SPI.
Does the 11AA160-I/S16K support 1.8V operation?
Yes, the 11AA160-I/S16K supports a VCC range of 1.8V to 5.5V, making it compatible with modern ultra-low-power MCUs and sensors. Its 1 µA max standby current and 1 mA typical active current are specified down to 1.8V, enabling use in battery-powered and energy-harvesting applications where voltage headroom is limited.
How does the 11AA160-I/S16K handle write protection?
The 11AA160-I/S16K implements hardware-based block write protection via two nonvolatile BP0/BP1 bits in its STATUS register. These bits allow locking 0%, 25%, 50%, or 100% of the memory array. Protection is enforced independently of software control, preventing accidental writes during power transitions or firmware faults - a critical feature for storing calibration or security-critical data.
What is the maximum write cycle time for the 11AA160-I/S16K?
The 11AA160-I/S16K has a maximum write cycle time of 10 ms for byte or page writes, as specified in its AC characteristics table. This includes internal auto-erase and programming. During this time, the WIP bit in the STATUS register remains set; polling this bit via RDSR is the recommended method to determine write completion before issuing subsequent commands.
Can the 11AA160-I/S16K be used alongside other UNI/O® devices on the same bus?
Yes, the 11AA160-I/S16K supports multi-drop UNI/O® bus operation. Its device address is hardwired to 0xA0 (1010 0000), and companion parts like 11AA161-I/S16K use 0xA1 (1010 0001), allowing both to coexist on a single SCIO line. No external addressing logic or bus arbitration is needed - the master selects the target device by sending its unique 4-bit device code after the start header.
11AA160-I/S16K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- Die
- 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:
- Die
11AA160-I/S16K FAQ
1.How can I place an order for 11AA160-I/S16K through Aetrix?
Please submit a Request for Quotation (RFQ) for 11AA160-I/S16K 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/S16K reliable?
The price and inventory of 11AA160-I/S16K 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/S16K is usually 5 days.
3.What payment methods are accepted for 11AA160-I/S16K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 11AA160-I/S16K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 11AA160-I/S16K?
11AA160-I/S16K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 11AA160-I/S16K 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/S16K?
For technical support, including 11AA160-I/S16K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 11AA160-I/S16K requirements.
6.How does Aetrix verify that 11AA160-I/S16K is sourced from the original manufacturer or authorized distributors?
All 11AA160-I/S16K 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/S16K meets industry standards.
7.What is the process for return or replacement of 11AA160-I/S16K?
All 11AA160-I/S16K units undergo pre-shipment inspection (PSI). If there is an issue with 11AA160-I/S16K, 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/S16K part is unused and in its original packaging.
Return procedure for 11AA160-I/S16K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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