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Microchip Technology AT25160A-10TU-2.7
- Part No.:
- AT25160A-10TU-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT25160A-10TU-2.7.pdf
- Description:
- IC EEPROM 16KBIT SPI 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,784
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Product details
Overview
AT25160A-10TU-2.7 from Microchip Technology (formerly Atmel) is a 16-Kbit SPI serial EEPROM organized as 2048 × 8 bits, operating from 2.7V to 5.5V, supporting 20 MHz clock rate at 5V, featuring 32-byte page write and hardware/software write protection. It serves as nonvolatile configuration storage in industrial control modules requiring low-voltage operation and high endurance.
For engineers reviewing the AT25160A-10TU-2.7 datasheet, AT25160A-10TU-2.7 pinout, AT25160A-10TU-2.7 application, or AT25160A-10TU-2.7 equivalent, this page delivers verified electrical specs, JEDEC-compliant TSSOP-8 package details, SPI Mode 0/3 timing behavior, block write protection mapping, and direct alternative part comparisons for BOM optimization.
Technical Context
The AT25160A-10TU-2.7 implements a synchronous slave SPI interface with separate SI/SO lines, MSB-first data transfer, and CS-driven command framing. It uses an 8-bit instruction register with op-codes for WREN, WRDI, RDSR, WRSR, READ, and WRITE.
Its internal architecture supports automatic address increment during page writes, READY/BUSY status via bit 0 of the status register, and four-level block protection (none, 1/4, 1/2, or full array) controlled by BP1/BP0 bits. The WP pin enables hardware write inhibit when WPEN=1 and WP=low.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 words × 8 bits), sufficient for firmware parameter tables or calibration data in space-constrained designs. |
| Supply Voltage Range | 2.7 V to 5.5 V - enables direct interfacing with 3.3 V and 5 V microcontrollers without level shifting. |
| Max Clock Frequency | 20 MHz at VCC = 5 V - supports fast configuration loading in real-time systems with tight boot timing budgets. |
| Page Write Size | 32 bytes - reduces write latency versus byte-write EEPROMs; allows efficient bulk updates of contiguous settings. |
| Endurance | 1 million write cycles - ensures reliable field operation over 10+ years in logging or counter applications. |
| Data Retention | 100 years at 25 °C - guarantees long-term integrity of stored calibration coefficients or security keys. |
| Write Cycle Time | 5 ms maximum - defines worst-case delay before next command can be issued; critical for deterministic firmware flow. |
Pinout & Package
AT25160A-10TU-2.7 is supplied in an 8-lead TSSOP package (JEDEC MO-153, 4.4 mm body width, 0.65 mm pitch), RoHS-compliant and green-marked ("U" suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; must be held low for entire SPI transaction; controls SO output impedance state. |
| SCK | Serial Clock | Input-only master-generated clock; supports SPI Modes 0 and 3; timing critical for tWH/tWL compliance. |
| SI | Serial Data Input | Receives op-code, address, and data; sampled on SCK rising edge in Mode 0. |
| SO | Serial Data Output | Drives read data and status bits; high-impedance when CS high or HOLD active. |
| GND | Ground Reference | Return path for all I/O and supply currents; requires low-impedance PCB connection to minimize noise coupling. |
| VCC | Power Supply | Single 2.7–5.5 V rail; decoupling capacitor (0.1 µF) required within 10 mm of pin per layout guidelines. |
| WP | Write Protect | Hardware lock for status register and protected memory blocks when WPEN=1; tied high for full write access. |
| HOLD | Communication Suspend | Pauses ongoing SPI transfer without resetting sequence; requires SCK low during assertion/deassertion. |
Key Features
| Feature | Design Value |
|---|---|
| SPI Mode 0 & 3 Compatibility | Interoperates with 68HC11, PIC, ARM Cortex-M, and other common MCU SPI peripherals without protocol translation. |
| Block Write Protection | Four configurable protection levels (none, 1/4, 1/2, full) allow selective lockdown of critical calibration or security sectors. |
| Self-timed Write Cycle | No external erase step needed; internal timing eliminates firmware wait-loop uncertainty; RDSR polling confirms completion. |
| Hardware + Software Write Disable | WP pin and WRDI instruction provide dual-layer protection against accidental writes during power-up or debug sessions. |
| Low Standby Current | 0.3 µA typical at 2.7 V (ISB2) - extends battery life in portable instrumentation and sensor nodes. |
Applications
| Industrial PLC Configuration Storage | Medical Device Calibration Memory |
|---|---|
Use Scenario: Storing I/O mapping, PID tuning parameters, and alarm thresholds in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: Nonvolatile configuration store accessed during boot and runtime via SPI; tolerates voltage brownouts during field maintenance. Use Value: 1M endurance and 100-year retention ensure parameter integrity across 15+ year product lifecycles without recalibration. | Use Scenario: Holding factory-calibrated sensor offsets and gain coefficients in portable ECG monitors and infusion pumps. IC Role / Device Role / Timing Role: SPI-connected EEPROM providing traceable, tamper-resistant calibration data accessible only after secure MCU authentication. Use Value: Block write protection prevents unauthorized modification of medical safety-critical values while allowing field updates to non-critical logs. |
| Automotive Body Control Module | Smart Energy Meter Firmware Settings |
Use Scenario: Saving seat/mirror position presets, lighting profiles, and door lock configurations in automotive BCMs operating across –40°C to +85°C. IC Role / Device Role / Timing Role: Automotive-grade serial EEPROM interfaced to CAN-connected microcontroller; withstands load dump transients via robust VCC tolerance. Use Value: 2.7–5.5 V operation and AEC-Q100 qualification support direct connection to 12 V system rails with minimal regulation. | Use Scenario: Storing tariff schedules, demand-response thresholds, and metering constants in ANSI C12.22-compliant smart electricity meters. IC Role / Device Role / Timing Role: Secure, low-power configuration store updated infrequently but requiring guaranteed write integrity during grid voltage sags. Use Value: 5 ms max write cycle and self-timed execution prevent partial writes during power interruption, ensuring data consistency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95160-DRMN6TP/K | STMicroelectronics 16 Kbit SPI EEPROM; identical 2.7–5.5 V range and 20 MHz speed; TSSOP-8 package; same 32-byte page size. | Qualified to AEC-Q100 Grade 2 (–40°C to +105°C); broader temp range than AT25160A-10TU-2.7 (–40°C to +85°C). | Select for automotive under-hood use where extended temperature margin is required. |
| BR24T16FJ-WE2 | Rohm 16 Kbit SPI EEPROM; 1.7–5.5 V supply; 10 MHz max clock at 1.7 V; TSSOP-8; 16-byte page size (vs. 32-byte). | Lower minimum voltage (1.7 V) enables single-cell Li-ion backup; smaller page size increases write overhead for large data sets. | Select for ultra-low-power battery-backed systems where sub-2.7 V operation is mandatory. |
Compared with M95160-DRMN6TP/K and BR24T16FJ-WE2, the AT25160A-10TU-2.7 offers optimal balance of speed (20 MHz), page efficiency (32-byte), and industrial temperature compliance, making it preferred for cost-sensitive industrial control and medical devices where 85°C ambient suffices.
Availability
AT25160A-10TU-2.7 is available at Aetrix Electronics and suitable for industrial PLCs, medical calibration storage, automotive body control modules, and smart energy metering requiring stable component supply and long-term obsolescence management.
Supply support for AT25160A-10TU-2.7 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 acquired Atmel in 2016 and maintains full support for the AT25xxx family of serial EEPROMs, delivering high-reliability nonvolatile memory solutions for industrial and automotive markets.
The AT25160A-10TU-2.7 belongs to Microchip's SPI serial EEPROM product line, designed specifically for embedded systems needing compact, low-power, and robust configuration storage with deterministic write timing and flexible protection schemes.
FAQ
What is the memory organization of the AT25160A-10TU-2.7?
The AT25160A-10TU-2.7 contains 16,384 bits of EEPROM memory, organized as 2048 words × 8 bits. This structure supports byte-aligned reads and writes, with address space ranging from 0x0000 to 0x07FF. The device uses a simple linear addressing scheme compatible with standard SPI memory-mapped drivers.
Does the AT25160A-10TU-2.7 support SPI Mode 0 exclusively, or are other modes usable?
The AT25160A-10TU-2.7 explicitly supports both SPI Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1), as confirmed in its official datasheet. While Mode 0 operation is fully characterized and documented, Mode 3 is also functional and electrically compliant - enabling interoperability with microcontrollers that default to inverted clock polarity.
How does the write protection mechanism work on the AT25160A-10TU-2.7?
The AT25160A-10TU-2.7 implements dual-layer write protection: software-based via WRSR-configured BP0/BP1 bits (enabling 0%, 25%, 50%, or 100% array lock), and hardware-based via the WP pin when WPEN=1. Both mechanisms independently inhibit writes to protected regions and the status register, ensuring robust data integrity during power transitions or firmware faults.
What is the maximum clock frequency supported by the AT25160A-10TU-2.7 at 3.3 V operation?
At VCC = 3.3 V, the AT25160A-10TU-2.7 supports up to 10 MHz SCK frequency, as specified in the AC Characteristics table for the 2.7–5.5 V voltage range. This is lower than its 20 MHz rating at 5 V but remains sufficient for most industrial and medical applications requiring reliable, noise-immune communication.
Is the AT25160A-10TU-2.7 pin-compatible with other variants in the AT25xxx family?
Yes - the AT25160A-10TU-2.7 shares identical pinout and footprint with all AT25xxx family members in TSSOP-8 (8A2) packaging, including AT25080A, AT25320A, and AT25640A. This allows scalable memory sizing within the same PCB layout, provided firmware handles differing address widths (10-bit vs. 11-bit vs. 12-bit vs. 13-bit).
AT25160A-10TU-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 16Kbit
- Memory Organization:
- 2K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 20 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- -
- Voltage - Supply:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
AT25160A-10TU-2.7 FAQ
1.How can I place an order for AT25160A-10TU-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25160A-10TU-2.7 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 AT25160A-10TU-2.7 reliable?
The price and inventory of AT25160A-10TU-2.7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25160A-10TU-2.7 is usually 5 days.
3.What payment methods are accepted for AT25160A-10TU-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25160A-10TU-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25160A-10TU-2.7?
AT25160A-10TU-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25160A-10TU-2.7 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 AT25160A-10TU-2.7?
For technical support, including AT25160A-10TU-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25160A-10TU-2.7 requirements.
6.How does Aetrix verify that AT25160A-10TU-2.7 is sourced from the original manufacturer or authorized distributors?
All AT25160A-10TU-2.7 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 AT25160A-10TU-2.7 meets industry standards.
7.What is the process for return or replacement of AT25160A-10TU-2.7?
All AT25160A-10TU-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT25160A-10TU-2.7, 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 AT25160A-10TU-2.7 part is unused and in its original packaging.
Return procedure for AT25160A-10TU-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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