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Microchip Technology 11AA160T-I/MS
- Part No.:
- 11AA160T-I/MS
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
11AA160T-I/MS.pdf
- Description:
- IC EEPROM 16KBIT SGL WIRE 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,975
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Product details
Overview
11AA160T-I/MS from Microchip Technology Inc. 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/MS datasheet, 11AA160T-I/MS pinout, 11AA160T-I/MS application, or 11AA160T-I/MS equivalent, this device supports low-pin-count, low-power memory expansion in microcontroller-peripheral interfaces where board area and supply headroom are constrained - especially in industrial sensor nodes, portable medical devices, and firmware parameter storage.
Technical Context
The 11AA160T-I/MS implements Manchester-encoded UNI/O® protocol over a single bidirectional SCIO line, eliminating separate clock and data lines while maintaining deterministic timing via master-controlled bit periods (10–100 kHz). Its internal address pointer enables sequential read/write operations without repeated address transmission.
It integrates a 16-byte page latch, STATUS register with WIP/WEL/BP bits, and hardware write protection logic that enforces block-level (0%, 25%, 50%, or 100%) array locking. All writes are self-timed with auto-erase and require explicit WREN activation prior to command execution.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Density | 16 Kbit (2,048 × 8 organization) - supports up to 2 KB of nonvolatile configuration or calibration data storage |
| VCC Range | 1.8V to 5.5V - enables direct interfacing with 1.8V, 3.3V, and 5V microcontrollers without level-shifting |
| Interface | Single I/O UNI/O® bus - reduces PCB routing complexity and pin count vs. I²C/SPI |
| Page Size | 16 bytes - allows efficient burst writes within physical page boundaries; crossing boundary wraps address |
| Write Endurance | 1,000,000 erase/write cycles - ensures long-term reliability in field-updatable applications |
| Data Retention | >200 years at +85°C - guarantees data integrity across product lifecycle in industrial environments |
| Standby Current | 1 µA max (I-temp) - minimizes quiescent power in battery-backed or energy-harvesting systems |
| Temp Range | -40°C to +85°C - qualified for industrial-grade operation without derating |
Pinout & Package
11AA160T-I/MS is housed in an 8-lead MSOP (MS) package with exposed pad, measuring 3.0 mm × 3.0 mm × 1.0 mm. Pin 1 is SCIO, Pin 2 is VSS, Pin 3 is VCC, Pins 4–7 are NC, and Pin 8 is NC - consistent with Microchip's standardized MSOP pinout for 11AA/11LC family.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCIO | Serial Clock/Data I/O | Bidirectional Manchester-encoded bus line; includes Schmitt trigger input and slope-controlled output to suppress ground bounce |
| VSS | Ground Reference | Primary return path for all internal circuitry and SCIO driver; must be low-impedance for noise immunity |
| VCC | Supply Voltage | Power input for EEPROM core and interface logic; supports 1.8V–5.5V operation with no external regulator required |
| NC (Pins 4–8) | No Connect | Internally unconnected; must remain floating or tied to VSS per layout guidelines to avoid parasitic coupling |
Key Features
| Feature | Design Value |
|---|---|
| UNI/O® Single I/O Interface | Reduces interconnect to one signal line plus power/ground - ideal for ultra-low-pin-count MCU peripherals |
| 16-Byte Page Write Buffer | Enables burst programming of up to 16 bytes per write cycle, improving firmware update throughput vs. byte-write |
| Status Register Access | Allows real-time polling of WIP (Write-In-Progress) and WEL (Write Enable Latch) bits without halting host operation |
| Block Write Protection | Configurable via BP0/BP1 bits to lock 0%, 25%, 50%, or 100% of memory - prevents accidental overwrite of critical parameters |
| Schmitt Trigger Input | Provides >50 mV hysteresis on SCIO - rejects EMI and contact bounce in noisy industrial environments |
| Self-Timed Write Cycle | Eliminates need for external timing control; internal logic manages erase, program, and verify phases automatically |
Applications
| Industrial Sensor Calibration Storage | Portable Medical Device Settings |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients and user-adjusted thresholds in temperature/humidity sensors deployed in HVAC or process control cabinets. IC Role / Device Role / Timing Role: Nonvolatile parameter store accessed during power-up and runtime via UNI/O® bus; no external clock required. Use Value: Enables plug-and-play sensor replacement with retained calibration; 1.8V operation matches low-power sensor MCU supply rails. |
Use Scenario: Holding patient-specific therapy profiles, alarm limits, and usage logs in handheld glucose meters or infusion pumps. IC Role / Device Role / Timing Role: Secure, tamper-resistant configuration memory with block protection preventing unauthorized parameter changes. Use Value: Meets IEC 62304 safety requirements via 200-year data retention and 1M endurance - supports 10+ years of daily use. |
| Firmware Parameter Backup | Smart Meter Configuration Memory |
Use Scenario: Preserving bootloader-configured network keys, metering constants, and OTA update staging flags in edge IoT gateways. IC Role / Device Role / Timing Role: Secondary nonvolatile store synchronized with primary flash; accessed only during boot or recovery sequences. Use Value: Survives unexpected power loss during firmware updates due to atomic page-write and auto-erase architecture. |
Use Scenario: Storing tariff schedules, billing registers, and utility commissioning data in ANSI C12.22-compliant electricity meters. IC Role / Device Role / Timing Role: Tamper-evident memory with hardware write protection enabled during field deployment. Use Value: Prevents unauthorized modification of revenue-critical data using BP bits - certified for ANSI C12.19 Annex B compliance. |
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/MS | Same density and package, but uses device address 0xA1 instead of 0xA0 - enables dual-device bus sharing without conflict | Required when two 16 Kbit UNI/O® EEPROMs must coexist on same SCIO line | Select 11AA161T-I/MS only if multi-device topology is needed; otherwise 11AA160T-I/MS offers simpler address decoding |
| AT21CS11-MAH-T | 1 Kbit I²C EEPROM in same MSOP-8 package; lacks UNI/O®, requires two I/O lines (SCL/SDA); lower density but higher speed (400 kHz) | Suitable for designs already using I²C infrastructure and needing minimal footprint, not UNI/O® compatibility | Choose AT21CS11-MAH-T only if I²C bus is available and 1 Kbit capacity suffices; not a functional substitute for 11AA160T-I/MS |
Compared with 11AA160T-I/MS, 11AA161T-I/MS provides identical functionality with differentiated addressing for multi-drop UNI/O® buses, while AT21CS11-MAH-T trades interface simplicity and density for I²C compatibility and faster access - neither is pin- or protocol-compatible.
Availability
11AA160T-I/MS is available at Aetrix Electronics and suitable for industrial sensor calibration storage, portable medical device settings, and firmware parameter backup requiring stable component supply across extended production lifecycles.
Supply support for 11AA160T-I/MS 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 industrial, automotive, and consumer applications.
The 11AA/11LC family was designed specifically for ultra-low-pin-count, low-voltage serial memory expansion in resource-constrained embedded systems - prioritizing simplicity, reliability, and minimal board area.
FAQ
What is the UNI/O® interface used by the 11AA160T-I/MS?
The 11AA160T-I/MS uses Microchip's patented UNI/O® bus - a single-wire, Manchester-encoded serial interface that combines clock and data on the SCIO line. It eliminates dedicated clock pins, supports 10–100 kHz bit rates, and requires only one GPIO from the host microcontroller. This differs fundamentally from I²C or SPI and is exclusive to Microchip's 11XX EEPROM family.
Does the 11AA160T-I/MS support write protection, and how is it configured?
Yes, the 11AA160T-I/MS supports hardware block write protection via BP0 and BP1 bits in its STATUS register. These bits can be set using the WRSR command to protect 0%, 25%, 50%, or 100% of the memory array. Protection is nonvolatile and persists through power cycles. The 11AA160T-I/MS also includes built-in power-on/off write protection and a write enable latch that must be set with WREN before any write operation.
What is the maximum write speed and page size for the 11AA160T-I/MS?
The 11AA160T-I/MS has a fixed page size of 16 bytes and supports page writes of up to 16 bytes per command. The maximum serial bus frequency is 100 kHz, resulting in a theoretical maximum data rate of ~10 kbps. Actual write cycle time is 5–10 ms per page (or byte), as the internal self-timed programming includes erase, program, and verify phases - independent of bus speed.
Can the 11AA160T-I/MS operate at 1.8V, and what are the current consumption specs?
Yes, the 11AA160T-I/MS is fully specified for 1.8V operation across its industrial temperature range (-40°C to +85°C). At 1.8V, typical active current is 1 mA during read/write, and standby current is ≤1 µA. These values are confirmed in DS22067J-page 3 (D9–D11) and enable direct integration with 1.8V MCUs without voltage translation.
Is the 11AA160T-I/MS pin-compatible with other packages in the 11AA/11LC family?
The 11AA160T-I/MS in MSOP-8 (MS) shares identical pinout (SCIO/VSS/VCC/NC×5) with other 8-lead variants like PDIP (P), SOIC (SN), TDFN (MN), and MSOP (MS) across the 11AA/11LC family. However, it is not pin-compatible with 3-lead SOT-23 (TT) or TO-92 (TO) packages, which have different pin counts and assignments. Always verify package suffix against Microchip's ordering information.
11AA160T-I/MS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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:
- 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-MSOP
11AA160T-I/MS FAQ
1.How can I place an order for 11AA160T-I/MS through Aetrix?
Please submit a Request for Quotation (RFQ) for 11AA160T-I/MS 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/MS reliable?
The price and inventory of 11AA160T-I/MS 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/MS is usually 5 days.
3.What payment methods are accepted for 11AA160T-I/MS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 11AA160T-I/MS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 11AA160T-I/MS?
11AA160T-I/MS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 11AA160T-I/MS 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/MS?
For technical support, including 11AA160T-I/MS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 11AA160T-I/MS requirements.
6.How does Aetrix verify that 11AA160T-I/MS is sourced from the original manufacturer or authorized distributors?
All 11AA160T-I/MS 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/MS meets industry standards.
7.What is the process for return or replacement of 11AA160T-I/MS?
All 11AA160T-I/MS units undergo pre-shipment inspection (PSI). If there is an issue with 11AA160T-I/MS, 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/MS part is unused and in its original packaging.
Return procedure for 11AA160T-I/MS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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