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Microchip Technology AT25160A-10PU-2.7
- Part No.:
- AT25160A-10PU-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT25160A-10PU-2.7.pdf
- Description:
- IC EEPROM 16KBIT SPI 20MHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,245
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Product details
Overview
AT25160A-10PU-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, and featuring 32-byte page write capability with block write protection. It serves as nonvolatile configuration storage in industrial controllers, automotive body modules, and embedded sensor nodes requiring low-voltage reliability.
For engineers reviewing the AT25160A-10PU-2.7 datasheet, AT25160A-10PU-2.7 pinout, AT25160A-10PU-2.7 application, or AT25160A-10PU-2.7 equivalent, key selection criteria include VCC range (2.7–5.5 V), SPI Mode 0/3 compatibility, 5 ms max self-timed write cycle, 1 million endurance cycles, and hardware/software write protection via WP pin and status register.
Technical Context
The AT25160A-10PU-2.7 implements a synchronous SPI slave interface with dedicated SI/SO lines, CS-controlled selection, and HOLD pin for communication suspension without sequence reset. Its internal architecture includes an 8-bit instruction register supporting WREN/WRDI/RDSR/WRSR/READ/WRITE op-codes with MSB-first transmission.
Block write protection is implemented via nonvolatile BP0/BP1 bits in the status register, enabling selective protection of 0%, 25%, 50%, or 100% of the 2048-word array. Write protection is enforced both by hardware (WP pin + WPEN bit) and software (WRSR command), with independent control over status register writability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8-bit words) - provides sufficient space for firmware parameters, calibration data, or device identity in compact embedded systems. |
| VCC Range | 2.7 V to 5.5 V - supports direct interfacing with 3.3 V and 5 V microcontrollers without level-shifting. |
| Max Clock Rate | 20 MHz at VCC = 5 V - enables fast configuration reads during system boot or runtime updates. |
| Page Write Size | 32 bytes - minimizes write latency per transaction and reduces host MCU overhead versus byte-write-only devices. |
| Write Endurance | 1 million cycles - ensures reliable logging or counter applications over 10+ years of daily writes. |
| Data Retention | 100 years - guarantees long-term integrity of stored calibration coefficients or security keys without refresh. |
| Write Cycle Time | 5 ms maximum - defines worst-case delay before next command can be issued; impacts real-time response in time-critical systems. |
Pinout & Package
AT25160A-10PU-2.7 is packaged in an 8-lead JEDEC PDIP (0.300" wide) with through-hole mounting and industry-standard pin spacing. This package supports manual prototyping, legacy PCB designs, and high-reliability industrial environments where thermal cycling and mechanical robustness are critical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must be low to accept SPI commands; high-Z SO when CS high prevents bus contention. |
| SCK | Serial Clock | Input clock synchronizing all data transfers; supports SPI Modes 0 and 3; timing limits define max interface speed. |
| SI | Serial Data Input | Receives op-codes, addresses, and write data; sampled on SCK rising edge in Mode 0. |
| SO | Serial Data Output | Drives read data and status bits; tri-stated when CS high or during HOLD assertion. |
| GND | Ground Reference | Common return path for VCC and all I/O; requires low-impedance connection to minimize noise-induced read errors. |
| VCC | Power Supply | Single supply input (2.7–5.5 V); powers internal logic and memory array; bypass capacitor required near pin. |
| WP | Write Protect | Hardware lock: when WP = low and WPEN = 1, blocks all status register and protected memory writes. |
| HOLD | Communication Suspend | Pauses ongoing SPI transfer without resetting address counter; allows host to service higher-priority interrupts. |
Key Features
| Feature | Design Value |
|---|---|
| SPI Mode 0 & 3 Support | Enables interoperability with diverse microcontrollers including 68HC11, PIC, ARM Cortex-M, and ESP32 without protocol translation. |
| 32-byte Page Write | Reduces average write time by >90% vs. byte-wise programming, improving system responsiveness during firmware update or logging. |
| Four-Tier Block Protection | Allows granular locking of memory regions (none, 25%, 50%, or 100%) to safeguard bootloader, calibration, or user settings independently. |
| WP Pin + Software Control | Provides dual-layer data security: physical strap for factory lockdown and runtime reconfiguration via WRSR instruction. |
| Self-timed Write Cycle | Eliminates need for external timing control or polling delays; host only checks RDY bit via RDSR to confirm completion. |
Applications
| Industrial PLC Configuration Storage | Automotive Body Control Module |
|---|---|
Use Scenario: Storing I/O mapping tables, PID tuning parameters, and fault history logs in programmable logic controllers operating across –40°C to +85°C. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed via SPI during power-up and runtime diagnostics. Use Value: 2.7–5.5 V operation ensures compatibility with 3.3 V PLC backplanes; 1M endurance supports daily parameter updates over 10-year product life. | Use Scenario: Retaining seat position presets, mirror angle offsets, and lighting profiles in vehicle door modules with battery backup. IC Role / Device Role / Timing Role: Persistent parameter store interfaced to 8-bit or 32-bit automotive MCUs using standard SPI peripherals. Use Value: Hardware WP pin enables permanent factory lockdown of safety-critical calibration data; 100-year retention prevents profile loss over vehicle lifetime. |
| Medical Sensor Calibration | Smart Energy Meter Firmware Settings |
Use Scenario: Holding temperature-compensated gain/offset coefficients and sensor ID in portable blood glucose monitors or pulse oximeters. IC Role / Device Role / Timing Role: Read-once/write-rarely calibration memory accessed during sensor initialization and self-test sequences. Use Value: 32-byte page write allows full coefficient set update in single transaction; low 2.7 V min VCC supports coin-cell backup operation. | Use Scenario: Storing tariff schedules, metering constants, and tamper-event timestamps in ANSI C12.22-compliant electricity meters. IC Role / Device Role / Timing Role: Secure configuration vault with hardware write protection preventing unauthorized firmware parameter modification. Use Value: Block protection enables separate locking of revenue-critical registers while allowing field-updatable display strings; RoHS-compliant PDIP meets utility procurement requirements. |
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; identical 2.7–5.5 V range and 20 MHz speed but uses different status register layout and lacks HOLD pin. | Requires firmware adaptation for status bit interpretation and no suspend capability during SPI transfers. | Select when HOLD functionality is unused and ST's qualification pedigree is preferred in automotive AEC-Q100 contexts. |
| CAT25160VI-GT3 | ON Semiconductor 16-Kbit SPI EEPROM; same pinout and VCC range, but rated for industrial temp only (–40°C to +85°C) and specifies 10 MHz max at 2.7 V. | Lower max clock at low voltage may limit throughput in battery-powered devices needing fast config loads. | Choose for cost-sensitive industrial designs where 10 MHz suffices and ON Semi's supply chain stability is prioritized. |
Compared with M95160-WMN6TP and CAT25160VI-GT3, the AT25160A-10PU-2.7 uniquely combines HOLD pin support, consistent 20 MHz operation down to 2.7 V, and a unified block protection scheme-making it optimal for systems requiring deterministic SPI pause/resume and guaranteed low-voltage performance.
Availability
AT25160A-10PU-2.7 is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, medical instrumentation, and smart metering applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant through-hole packaging.
Supply support for AT25160A-10PU-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 is a global semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with broad industrial and automotive qualifications.
The AT25160A-10PU-2.7 belongs to Microchip's legacy AT25xxx SPI EEPROM family, designed for robust, low-power nonvolatile storage in resource-constrained embedded systems where reliability and ease of integration are paramount.
FAQ
What is the memory organization of the AT25160A-10PU-2.7?
The AT25160A-10PU-2.7 contains 16,384 bits of EEPROM memory organized as 2048 words × 8 bits. This structure supports byte-level random access and sequential reads across the full address space (0x0000 to 0x07FF), with automatic address incrementation during continuous read operations. The AT25160A-10PU-2.7 uses this fixed 2048-word layout regardless of VCC voltage or operating mode.
Does the AT25160A-10PU-2.7 support SPI Mode 0 exclusively, or other modes?
The AT25160A-10PU-2.7 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 in timing diagrams, Mode 3 is explicitly listed in features. The AT25160A-10PU-2.7 maintains full functionality-including write enable, status register access, and page writes-in both modes.
How does hardware write protection work on the AT25160A-10PU-2.7?
Hardware write protection on the AT25160A-10PU-2.7 activates when the WP pin is driven low AND the WPEN bit in the status register is set to "1". In this state, writes to the status register (including BP0/BP1 and WPEN) and to memory regions covered by block protection are blocked. The AT25160A-10PU-2.7 ignores attempted writes without error signaling-only RDSR remains functional during protection.
What is the maximum clock frequency supported by the AT25160A-10PU-2.7 at 3.3 V?
At VCC = 3.3 V, the AT25160A-10PU-2.7 supports up to 10 MHz SCK frequency, as specified in the AC Characteristics table under the 2.7–5.5 V voltage column. This is lower than its 20 MHz rating at 5 V but remains sufficient for most configuration and logging tasks. The AT25160A-10PU-2.7 maintains full timing compliance-including setup/hold and output valid windows-at this speed.
Can the AT25160A-10PU-2.7 be used in automotive applications?
Yes-the AT25160A-10PU-2.7 is qualified for automotive use with an industrial temperature range of –40°C to +85°C and meets AEC-Q100 stress test requirements per manufacturer documentation. Its PDIP package offers mechanical robustness for under-hood modules, and features like HOLD pin and hardware WP support fail-safe behavior in automotive ECUs. The AT25160A-10PU-2.7 is commonly deployed in body control units and instrument clusters.
AT25160A-10PU-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:
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT25160A-10PU-2.7 FAQ
1.How can I place an order for AT25160A-10PU-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25160A-10PU-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-10PU-2.7 reliable?
The price and inventory of AT25160A-10PU-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-10PU-2.7 is usually 5 days.
3.What payment methods are accepted for AT25160A-10PU-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25160A-10PU-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25160A-10PU-2.7?
AT25160A-10PU-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25160A-10PU-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-10PU-2.7?
For technical support, including AT25160A-10PU-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25160A-10PU-2.7 requirements.
6.How does Aetrix verify that AT25160A-10PU-2.7 is sourced from the original manufacturer or authorized distributors?
All AT25160A-10PU-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-10PU-2.7 meets industry standards.
7.What is the process for return or replacement of AT25160A-10PU-2.7?
All AT25160A-10PU-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT25160A-10PU-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-10PU-2.7 part is unused and in its original packaging.
Return procedure for AT25160A-10PU-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT25160A-10PU-2.7 Tags
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