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Microchip Technology AT25160-10PI-2.7
- Part No.:
- AT25160-10PI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT25160-10PI-2.7.pdf
- Description:
- IC EEPROM 16KBIT SPI 3MHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,792
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Product details
Overview
AT25160-10PI-2.7 from Atmel (now Microchip) is a 16-kbit SPI serial EEPROM organized as 2048 words × 8 bits, operating from 2.7V to 5.5V, supporting 3.0 MHz clock rate at 5V, featuring 32-byte page write and hardware/software write protection via WP pin and status register. It targets industrial control systems requiring nonvolatile parameter storage with low-voltage compatibility.
For engineers reviewing the AT25160-10PI-2.7 datasheet, AT25160-10PI-2.7 pinout, AT25160-10PI-2.7 application, or AT25160-10PI-2.7 equivalent, key selection considerations include its 2.7–5.5V supply range, 8-lead PDIP package, SPI Mode 0/3 compatibility, 5 ms typical write cycle, and block protection covering 1/4, 1/2, or full memory array.
Technical Context
The AT25160-10PI-2.7 implements a synchronous serial peripheral interface (SPI) slave device with separate SI (input) and SO (output) pins, MSB-first data transfer, and chip-select–driven command protocol. It requires WREN instruction before WRITE and supports HOLD pin for pausing ongoing transfers without reset.
Its internal architecture includes an 8-bit instruction register, nonvolatile status register (WPEN, BP1/BP0, WEN, RDY), and automatic address increment during page writes. Block protection is implemented via programmable bits controlling access to memory segments defined by address ranges (e.g., 0600–07FF hex for 1/4 protection on AT25160).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 kbit (2048 × 8-bit words) - fixed capacity for configuration storage in space-constrained embedded nodes |
| Supply Voltage | 2.7 V to 5.5 V - enables direct interfacing with 3.3V and 5V microcontrollers without level shifting |
| Max Clock Frequency | 3.0 MHz at VCC = 5.0 V - supports high-throughput firmware parameter updates in real-time systems |
| Page Write Size | 32 bytes - minimizes write latency per transaction while avoiding excessive overwrites in rolling buffer applications |
| Write Cycle Time | 5 ms typical - defines minimum interval between successive write commands; impacts system responsiveness during save operations |
| Endurance | 1 million write cycles - ensures reliable operation over 10+ years in daily-configurable industrial HMI or sensor calibration use cases |
| Data Retention | 100 years - guarantees long-term integrity of stored calibration coefficients or security keys without refresh |
| Operating Temp | −40°C to +85°C - certified for industrial-grade deployment in factory automation and outdoor metering equipment |
Pinout & Package
AT25160-10PI-2.7 uses an 8-lead PDIP (Plastic Dual Inline Package), 0.300" wide body, with standard through-hole mounting and 2.54 mm lead pitch. Pin 1 is marked with dot or notch orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must be low to accept instructions; high impedance on SO when CS high |
| SCK | Serial Clock | Master-generated clock; timing reference for SI/SO data sampling; supports SPI Modes 0 and 3 |
| SI | Serial Data Input | Receives op-codes, addresses, and write data; MSB first; ignored during HOLD or write cycle |
| SO | Serial Data Output | Drives read data and status bits; high-impedance when CS high or during HOLD |
| GND | Ground | Reference return path for all I/O and power; must be connected to system common ground plane |
| VCC | Power Supply | Primary supply input; decoupling capacitor (0.1 µF) required within 10 mm of pin for noise immunity |
| WP | Write Protect | Hardware lock for status register and protected memory blocks when WPEN=1 and WP=low |
| HOLD | Communication Suspend | Pauses active serial transfer without resetting sequence; requires SCK low during assertion |
Key Features
| Feature | Design Value |
|---|---|
| SPI Mode 0 & 3 Support | Compatible with legacy 68HC11 and modern ARM Cortex-M SPI peripherals without mode translation logic |
| 32-byte Page Write | Reduces total programming time vs. byte-write by up to 97% for contiguous configuration blocks |
| Four-Level Block Protection | Enables selective lockdown of critical sectors (e.g., bootloader config vs. user settings) via BP1/BP0 bits |
| WP Pin + Software Disable | Dual-layer protection prevents accidental writes during power-up transients or firmware bugs |
| Self-timed Write Cycle | Eliminates need for external timing circuitry or polling overhead - RDSR bit 0 indicates completion |
| Industrial Temperature Range | Validated operation from −40°C to +85°C ensures reliability in uncontrolled environments like motor drives or HVAC controllers |
Applications
| Industrial PLC Configuration Storage | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Storing I/O mapping tables, PID tuning parameters, and fault log history in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed via SPI during boot and runtime reconfiguration. Use Value: Enables field-upgradable machine behavior without firmware reflashing; 1M endurance supports daily recalibration cycles. | Use Scenario: Saving seat position presets, mirror angles, and lighting profiles in automotive BCMs across vehicle lifecycle. IC Role / Device Role / Timing Role: SPI-connected parameter memory with WP pin tied to ignition-controlled rail for tamper-resistant storage. Use Value: Survives 100-year data retention requirement for OEM warranty compliance; −40°C to +85°C rating matches under-hood thermal envelope. |
| Medical Infusion Pump Calibration | Smart Energy Meter Firmware Parameters |
Use Scenario: Holding flow-rate calibration coefficients, safety thresholds, and usage counters in Class II medical devices. IC Role / Device Role / Timing Role: Secure, write-protected memory accessed only during service mode with hardware WP enabled. Use Value: Block protection prevents unauthorized modification of critical safety values; 5 ms write time allows quick recalibration during maintenance. | Use Scenario: Storing tariff schedules, demand-response settings, and cryptographic keys in ANSI C12.22-compliant meters. IC Role / Device Role / Timing Role: Tamper-evident configuration store with dual software/hardware write lock activated during firmware update. Use Value: 100-year retention meets utility industry lifetime requirements; 2.7–5.5V range supports battery-backed operation during grid outages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95160-WMN6TP | STMicroelectronics 16-kbit SPI EEPROM; same 2.7–5.5V range, 20 MHz max clock, 5 ms write time, but uses different status register layout and lacks HOLD pin | Higher speed suitable for burst-write intensive designs; no HOLD support limits multi-master arbitration capability | Select when maximum throughput is prioritized and HOLD functionality is unused in system architecture |
| BR24G16NUX-10 | Rohm 16-kbit SPI EEPROM; 1.7–5.5V supply, 10 MHz max clock, 5 ms write time, built-in error correction (ECC), no HOLD or WP pin | ECC improves data integrity in noisy industrial EMI environments; absence of WP/HOLD simplifies PCB routing but reduces protection flexibility | Choose for mission-critical data integrity where ECC outweighs need for hardware write lock or communication suspend |
Compared with M95160-WMN6TP and BR24G16NUX-10, the AT25160-10PI-2.7 uniquely combines HOLD pin support for deterministic bus arbitration, dedicated WP pin with configurable WPEN bit, and proven interoperability with legacy 68HC11-style SPI masters-making it optimal for retrofit industrial controllers and automotive modules requiring robust, field-proven protection schemes.
Availability
AT25160-10PI-2.7 is available at Aetrix Electronics and suitable for industrial PLCs, automotive body control modules, medical infusion pump calibration, smart energy meter firmware parameter storage, and embedded HMI configuration requiring stable component supply across extended product lifecycles.
Supply support for AT25160-10PI-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) is a leading provider of microcontrollers, analog, FPGA, and memory solutions, serving industrial, automotive, and consumer markets with high-reliability silicon and design tools.
The AT25160-10PI-2.7 belongs to Microchip's legacy Atmel SPI Serial EEPROM family, engineered for low-power, low-voltage embedded systems needing robust nonvolatile storage with flexible hardware/software write protection and industrial temperature resilience.
FAQ
What is the memory organization of the AT25160-10PI-2.7?
The AT25160-10PI-2.7 contains 16,384 bits of EEPROM memory organized as 2048 words × 8 bits. Its address space spans A10–A0 (11 address bits), with unused higher bits (A15–A11) treated as don't-care. This structure enables efficient byte-level reads and 32-byte page writes aligned to natural boundaries, directly supporting common MCU register-mapped configuration storage patterns.
Does the AT25160-10PI-2.7 support both SPI Mode 0 and Mode 3?
Yes, the AT25160-10PI-2.7 explicitly supports SPI Modes 0 (CPOL = 0, CPHA = 0) and 3 (CPOL = 1, CPHA = 1), as confirmed in its official datasheet. This dual-mode compatibility allows seamless integration with diverse microcontrollers-including legacy 68HC11 derivatives and modern ARM-based SoCs-without requiring clock polarity or phase inversion logic in the host firmware or hardware interface.
How does the write protection work on the AT25160-10PI-2.7?
The AT25160-10PI-2.7 implements dual-layer write protection: hardware via the WP pin (active-low, enabled when WPEN bit = 1) and software via status register bits BP1/BP0. When WP is low and WPEN = 1, writes to the status register and protected memory blocks are blocked. BP1/BP0 define four protection levels (none, 1/4, 1/2, or full array), with corresponding address ranges documented in Table 4 of the datasheet.
What is the purpose of the HOLD pin on the AT25160-10PI-2.7?
The HOLD pin on the AT25160-10PI-2.7 suspends ongoing serial communication without resetting the internal command sequence. When asserted low while SCK is low, it places SO in high-impedance state and ignores SI inputs, allowing the master to temporarily yield the bus-e.g., during higher-priority interrupt handling-then resume exactly where transmission left off upon deassertion.
Can the AT25160-10PI-2.7 operate at 1.8V?
No, the AT25160-10PI-2.7 is specifically rated for 2.7V to 5.5V operation, as indicated by the "-2.7" suffix in its ordering code. For 1.8V operation, the correct variant is AT25160-10PI-1.8 (or equivalent -SI/-TI versions), which has distinct DC/AC characteristics and is not interchangeable due to voltage threshold differences in input/output logic levels and internal charge pump behavior.
AT25160-10PI-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- 3 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT25160-10PI-2.7 FAQ
1.How can I place an order for AT25160-10PI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25160-10PI-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 AT25160-10PI-2.7 reliable?
The price and inventory of AT25160-10PI-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 AT25160-10PI-2.7 is usually 5 days.
3.What payment methods are accepted for AT25160-10PI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25160-10PI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25160-10PI-2.7?
AT25160-10PI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25160-10PI-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 AT25160-10PI-2.7?
For technical support, including AT25160-10PI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25160-10PI-2.7 requirements.
6.How does Aetrix verify that AT25160-10PI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT25160-10PI-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 AT25160-10PI-2.7 meets industry standards.
7.What is the process for return or replacement of AT25160-10PI-2.7?
All AT25160-10PI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT25160-10PI-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 AT25160-10PI-2.7 part is unused and in its original packaging.
Return procedure for AT25160-10PI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT25160-10PI-2.7 Tags
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