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Microchip Technology AT25160AN-10SI-2.7-T

Name: AT25160AN-10SI-2.7-T
Brand: Microchip Technology
SKU: AT25160AN-10SI-2.7-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AT25160AN-10SI-2.7-T

Manufacturer:: Microchip Technology

Category:: Memory

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: AT25160AN-10SI-2.7-T.pdf

Description:: IC EEPROM 16KBIT SPI 20MHZ 8SOIC

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Product details

Overview

AT25160AN-10SI-2.7-T from Microchip Technology (formerly Atmel) is a 16-kbit SPI serial EEPROM organized as 2048 × 8 bits, operating from 2.7V to 5.5V with 20 MHz max clock rate at 5V, 32-byte page write capability, and automotive-grade extended temperature support (−40°C to +125°C). It serves as nonvolatile configuration storage in microcontroller-based industrial control modules.

For engineers reviewing the AT25160AN-10SI-2.7-T datasheet, AT25160AN-10SI-2.7-T pinout, AT25160AN-10SI-2.7-T application, or AT25160AN-10SI-2.7-T equivalent, key selection criteria include VCC range compatibility (2.7–5.5 V), 125°C extended temperature rating, hardware/software write protection via WP pin and status register, 1 million endurance cycles, and JEDEC SOIC-8 package footprint.

Technical Context

The AT25160AN-10SI-2.7-T implements a synchronous SPI slave interface compliant with Modes 0 and 3, using separate SI/SO lines and CS-controlled access. Its internal architecture includes an 8-bit instruction register, nonvolatile status register (BP0/BP1/WPEN/RDY/WEN), and automatic address incrementing during sequential reads.

Block write protection is configurable via status register bits BP0 and BP1 to lock 0%, 25%, 50%, or 100% of the memory array. The HOLD pin suspends ongoing serial transfers without resetting the sequence, while WP enables hardware-level inhibition of status register writes when WPEN = 1 and WP = low.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	16 Kbit (2048 × 8) - supports firmware parameter tables and calibration data storage for mid-complexity embedded systems.
Supply Voltage Range	2.7 V to 5.5 V - compatible with both 3.3 V and 5 V logic domains without level shifting.
Max Clock Frequency	20 MHz at VCC = 5 V - enables fast configuration loading in time-critical boot sequences.
Page Write Size	32 bytes - minimizes write latency per transaction and reduces host MCU overhead vs. byte-write-only devices.
Endurance & Retention	1 million write cycles / 100 years data retention - suitable for field-updatable systems requiring long service life.
Operating Temperature	−40°C to +125°C - qualified for under-hood automotive, industrial motor drives, and outdoor power equipment.
Write Cycle Time	5 ms maximum - deterministic programming delay enables precise timing budgeting in real-time firmware.

Pinout & Package

AT25160AN-10SI-2.7-T is housed in an 8-lead JEDEC SOIC (8S1) package: 0.150" wide, gull-wing leads, 1.27 mm pitch, body dimensions 4.90 mm × 3.90 mm × 1.75 mm max height.

Pin/Terminal	Circuit Role	Design Meaning
CS	Chip Select	Active-low enable; initiates SPI communication and places SO in high-impedance when high.
SCK	Serial Clock	Input-only clock signal; defines timing for SI sampling and SO output edges per SPI Mode 0/3.
SI	Serial Data Input	MOSI input path for opcodes, addresses, and write data; ignored unless CS is low and device is write-enabled.
SO	Serial Data Output	MISO output path for read data and status register contents; tri-stated when CS is high or HOLD is active.
WP	Write Protect	Hardware lock for status register writes when WPEN = 1; no effect on unprotected memory writes if WPEN = 0.
HOLD	Communication Suspend	Pauses ongoing SPI transfer (e.g., during interrupt servicing) without losing byte count or address state.
VCC	Power Supply	Primary supply rail; powers internal logic, memory array, and I/O buffers across full 2.7–5.5 V range.
GND	Ground	Reference node for all digital and analog circuitry; must be low-impedance connection to minimize noise coupling.

Key Features

Feature	Design Value
Block Write Protection	Four programmable protection levels (0%, 25%, 50%, 100%) via nonvolatile BP0/BP1 bits - prevents accidental overwrite of critical calibration or security keys.
Dual Write Protection	Independent hardware (WP pin) and software (WREN/WRSR) controls - enables layered security for safety-critical firmware updates.
Extended Temperature Grade	Rated for −40°C to +125°C operation - eliminates derating concerns in engine control units and industrial inverters.
Low Standby Current	2.0 µA typical at 5.0 V, CS = VCC - extends battery life in always-on sensor nodes and backup power applications.
Page Write Efficiency	32-byte burst writes reduce total programming time by up to 32× versus byte-wise writes - accelerates field firmware patching.

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 deployed in factory automation cabinets. IC Role / Device Role / Timing Role: Nonvolatile configuration memory interfaced to ARM Cortex-M4 host MCU via SPI at 10 MHz; accessed during boot and runtime parameter adjustment. Use Value: 125°C rating ensures reliability inside sealed enclosures with ambient temperatures up to 85°C and internal self-heating; 1M endurance supports daily reconfiguration over 27-year product lifecycle.	Use Scenario: Holding door lock actuator calibration offsets, seat position presets, and lighting dimming profiles in automotive BCMs subject to thermal cycling and EMI. IC Role / Device Role / Timing Role: SPI EEPROM providing secure, tamper-resistant storage for user preferences and safety-critical settings; accessed during vehicle power-up and driver interaction events. Use Value: Hardware WP pin + status register BP bits prevent unauthorized modification during CAN bus diagnostics; −40°C to +125°C qualification meets AEC-Q100 Grade 1 requirements.
Medical Infusion Pump Calibration	Smart Energy Meter Firmware Parameters
Use Scenario: Retaining flow rate calibration coefficients, alarm thresholds, and usage audit logs in Class II medical infusion pumps requiring regulatory traceability. IC Role / Device Role / Timing Role: Trusted nonvolatile memory storing FDA-mandated calibration data; accessed only by authenticated firmware routines via SPI with WREN sequence enforcement. Use Value: 100-year data retention guarantees integrity of calibration records across device lifetime; write cycle time ≤5 ms enables deterministic logging during dose delivery events.	Use Scenario: Storing tariff schedules, metering constants, and cryptographic keys in ANSI C12.22-compliant smart electricity meters installed in outdoor utility cabinets. IC Role / Device Role / Timing Role: Secure configuration store interfaced to TI MSP430 host; protected via WP pin tied to system security controller and BP bits locking key regions. Use Value: Lead-free/halogen-free construction complies with RoHS/REACH; 2.7–5.5 V operation accommodates supercapacitor backup during AC mains failure.

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 deployed in factory automation cabinets.

IC Role / Device Role / Timing Role: Nonvolatile configuration memory interfaced to ARM Cortex-M4 host MCU via SPI at 10 MHz; accessed during boot and runtime parameter adjustment.

Use Value: 125°C rating ensures reliability inside sealed enclosures with ambient temperatures up to 85°C and internal self-heating; 1M endurance supports daily reconfiguration over 27-year product lifecycle.

Use Scenario: Holding door lock actuator calibration offsets, seat position presets, and lighting dimming profiles in automotive BCMs subject to thermal cycling and EMI.

IC Role / Device Role / Timing Role: SPI EEPROM providing secure, tamper-resistant storage for user preferences and safety-critical settings; accessed during vehicle power-up and driver interaction events.

Use Value: Hardware WP pin + status register BP bits prevent unauthorized modification during CAN bus diagnostics; −40°C to +125°C qualification meets AEC-Q100 Grade 1 requirements.

Medical Infusion Pump Calibration

Smart Energy Meter Firmware Parameters

Use Scenario: Retaining flow rate calibration coefficients, alarm thresholds, and usage audit logs in Class II medical infusion pumps requiring regulatory traceability.

IC Role / Device Role / Timing Role: Trusted nonvolatile memory storing FDA-mandated calibration data; accessed only by authenticated firmware routines via SPI with WREN sequence enforcement.

Use Value: 100-year data retention guarantees integrity of calibration records across device lifetime; write cycle time ≤5 ms enables deterministic logging during dose delivery events.

Use Scenario: Storing tariff schedules, metering constants, and cryptographic keys in ANSI C12.22-compliant smart electricity meters installed in outdoor utility cabinets.

IC Role / Device Role / Timing Role: Secure configuration store interfaced to TI MSP430 host; protected via WP pin tied to system security controller and BP bits locking key regions.

Use Value: Lead-free/halogen-free construction complies with RoHS/REACH; 2.7–5.5 V operation accommodates supercapacitor backup during AC mains failure.

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial EEPROM applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
M95160-DWDW3TP/K	16 Kbit SPI EEPROM, 1.8–5.5 V, 20 MHz, SOIC-8, but rated only to +85°C (industrial grade).	Lacks extended temperature support; unsuitable for under-hood or high-ambient industrial deployments.	Select when cost sensitivity outweighs 125°C requirement and system ambient stays ≤85°C.
BR24G16FJ-3GE2	16 Kbit I²C EEPROM, 1.7–5.5 V, 1 MHz max, TSSOP-8, −40°C to +125°C, built-in write protect.	I²C interface requires different MCU peripheral setup and has lower bandwidth than SPI; no HOLD pin.	Choose for space-constrained designs needing I²C compatibility and identical temperature grade, accepting 5× slower write speed.

Compared with M95160-DWDW3TP/K and BR24G16FJ-3GE2, AT25160AN-10SI-2.7-T uniquely combines SPI speed (20 MHz), extended temperature (−40°C to +125°C), and dual hardware/software write protection in JEDEC SOIC-8 - making it optimal for automotive and industrial edge nodes demanding robustness and performance.

Availability

AT25160AN-10SI-2.7-T is available at Aetrix Electronics and suitable for industrial PLCs, automotive body control modules, medical infusion pumps, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for AT25160AN-10SI-2.7-T 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 a focus on reliability, longevity, and embedded system integration.

AT25160AN-10SI-2.7-T belongs to Microchip's legacy Atmel SPI EEPROM product line, engineered for robust nonvolatile data storage in harsh environments where extended temperature operation, high endurance, and flexible write protection are mandatory.

FAQ

What is the maximum clock frequency supported by the AT25160AN-10SI-2.7-T?

The AT25160AN-10SI-2.7-T supports up to 20 MHz SCK frequency when VCC = 5.0 V, dropping to 10 MHz at 2.7 V and 5 MHz at 1.8 V. These values are specified in the AC Characteristics table and apply across the full −40°C to +125°C operating range. The AT25160AN-10SI-2.7-T uses Mode 0 (CPOL = 0, CPHA = 0) or Mode 3 (CPOL = 1, CPHA = 1) SPI timing, with tWH/tWL minimums scaling accordingly.

Does the AT25160AN-10SI-2.7-T support hardware write protection independent of software commands?

Yes, the AT25160AN-10SI-2.7-T provides independent hardware write protection via the WP pin. When the WPEN bit in the status register is set to "1", pulling WP low blocks all writes to the status register-including BP0/BP1 and WPEN itself. This protection remains active even if the host MCU fails or executes incorrect software sequences. The AT25160AN-10SI-2.7-T retains this behavior across power cycles since WPEN is nonvolatile.

What memory organization does the AT25160AN-10SI-2.7-T use, and how is addressing handled?

The AT25160AN-10SI-2.7-T organizes its 16 Kbit capacity as 2048 words of 8 bits each (2048 × 8). Addressing uses 11 bits (A10–A0), transmitted MSB-first after the READ or WRITE opcode. During sequential reads, the internal address counter auto-increments and rolls over from address 0x07FF to 0x0000. The AT25160AN-10SI-2.7-T does not require separate erase cycles-writes modify only targeted bytes or pages.

Can the AT25160AN-10SI-2.7-T be used in systems powered by 3.3 V logic without level shifters?

Yes, the AT25160AN-10SI-2.7-T operates natively from 2.7 V to 5.5 V, making it fully compatible with 3.3 V systems. Its VIH threshold is VCC × 0.7 (min), so at 3.3 V it accepts ≥2.31 V as high; its VOL is ≤0.4 V at IOL = 3 mA, ensuring clean low-level signaling into 3.3 V receivers. No external level shifting is required for direct connection to 3.3 V SPI peripherals.

How does the HOLD pin function during an active SPI transaction on the AT25160AN-10SI-2.7-T?

The HOLD pin on the AT25160AN-10SI-2.7-T suspends ongoing SPI communication without resetting the internal state. To pause, HOLD must be driven low while SCK is low; the device holds the current byte count and address pointer. Resuming requires bringing HOLD high while SCK remains low. During HOLD, SI is ignored and SO enters high-impedance-allowing the host MCU to service interrupts or perform other tasks before continuing the exact same transaction.

AT25160AN-10SI-2.7-T Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

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-SOIC

AT25160AN-10SI-2.7-T FAQ

1.How can I place an order for AT25160AN-10SI-2.7-T through Aetrix?

Please submit a Request for Quotation (RFQ) for AT25160AN-10SI-2.7-T 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 AT25160AN-10SI-2.7-T reliable?

The price and inventory of AT25160AN-10SI-2.7-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25160AN-10SI-2.7-T is usually 5 days.

3.What payment methods are accepted for AT25160AN-10SI-2.7-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25160AN-10SI-2.7-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AT25160AN-10SI-2.7-T?

AT25160AN-10SI-2.7-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AT25160AN-10SI-2.7-T 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 AT25160AN-10SI-2.7-T?

For technical support, including AT25160AN-10SI-2.7-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25160AN-10SI-2.7-T requirements.

6.How does Aetrix verify that AT25160AN-10SI-2.7-T is sourced from the original manufacturer or authorized distributors?

All AT25160AN-10SI-2.7-T 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 AT25160AN-10SI-2.7-T meets industry standards.

7.What is the process for return or replacement of AT25160AN-10SI-2.7-T?

All AT25160AN-10SI-2.7-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25160AN-10SI-2.7-T, 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 AT25160AN-10SI-2.7-T part is unused and in its original packaging.

Return procedure for AT25160AN-10SI-2.7-T:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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