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Microchip Technology AT25160AN-10SI-2.7
- Part No.:
- AT25160AN-10SI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT25160AN-10SI-2.7.pdf
- Description:
- IC EEPROM 16KBIT SPI 20MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,803
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Product details
Overview
AT25160AN-10SI-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 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 datasheet, AT25160AN-10SI-2.7 pinout, AT25160AN-10SI-2.7 application, or AT25160AN-10SI-2.7 equivalent, key selection criteria include VCC range compatibility (2.7–5.5 V), 32-byte page write timing (5 ms max), block write protection granularity (1/4, 1/2, or full array), and JEDEC SOIC-8 package footprint for space-constrained PCB layouts.
Technical Context
The AT25160AN-10SI-2.7 implements a synchronous SPI slave interface supporting Modes 0 and 3, with separate SI/SO pins and CS-controlled selection. Its internal architecture includes an 8-bit instruction register, status register with BP0/BP1/WPEN bits, and automatic address incrementing during sequential reads.
Block write protection is enforced via nonvolatile status register bits BP0 and BP1, enabling hardware- and software-controlled locking of memory segments - specifically 0600–07FF hex addresses for the AT25160A variant. The HOLD pin suspends ongoing serial transfers without resetting the sequence, while WP provides hardware-level inhibition of status register writes when WPEN = 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8), sufficient for firmware parameter tables or calibration data in embedded systems |
| Supply Voltage | 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 loading during boot-up sequences |
| Page Write Size | 32 bytes - reduces write overhead vs. byte-wise programming; avoids excessive wear on single locations |
| Write Cycle Time | 5 ms maximum - defines minimum interval between write commands; critical for real-time logging applications |
| Data Retention | 100 years - ensures long-term reliability in unattended equipment such as utility meters or remote sensors |
| Endurance | 1 million write cycles - supports frequent reconfiguration in test equipment or field-upgradable devices |
| Operating Temp | −40°C to +125°C - qualified for under-hood automotive ECUs and industrial motor drives |
Pinout & Package
AT25160AN-10SI-2.7 uses an 8-lead JEDEC SOIC (8S1) package: 0.150" wide body, 5.0 mm × 3.99 mm footprint, 1.27 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must be low to accept SPI commands; high-Z output state when deasserted |
| SCK | Serial Clock | Input-only clock input synchronized to master MCU; determines timing for SI/SO data sampling |
| SI | Serial Data Input | Command/address/data input path; MSB-first protocol; ignored during HOLD or CS high |
| SO | Serial Data Output | Read data output; tri-stated when CS high or during HOLD; valid within tV after SCK edge |
| WP | Write Protect | Hardware lock for status register; active low only when WPEN bit = 1; prevents accidental configuration corruption |
| HOLD | Communication Suspend | Pauses ongoing SPI transfer without resetting address counter; requires SCK low to assert/deassert |
| VCC | Power Supply | Primary supply rail; powers internal logic and memory array; decoupling capacitor required per layout guidelines |
| GND | Ground | Reference return path for all signals and power; must be low-impedance connection to minimize noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Block Write Protection | Configurable 1/4, 1/2, or full-array lock via nonvolatile BP0/BP1 bits - secures bootloader or calibration regions from overwrite |
| Hardware + Software Write Disable | WP pin + WREN/WRDI instructions provide dual-layer protection - prevents unintended writes during power transients or firmware bugs |
| Self-timed Write Cycle | No external erase step required; internal timing eliminates need for MCU polling delay loops beyond RDSR status check |
| Extended Temperature Range | −40°C to +125°C operation - validated for engine control units, solar inverters, and railway signaling hardware |
| Low Standby Current | 0.3 µA typical at 2.7 V - extends battery life in portable diagnostic tools or wireless sensor nodes |
| SPI Mode Compatibility | Supports both Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1) - interoperable with diverse MCU families including PIC, ARM Cortex-M, and Renesas RX |
Applications
| Industrial PLC Configuration Storage | Automotive ECU Calibration Memory |
|---|---|
Use Scenario: Storing I/O mapping, PID tuning parameters, and fault history in programmable logic controllers deployed in factory automation lines. IC Role / Device Role / Timing Role: Nonvolatile configuration EEPROM interfaced via SPI to ARM-based PLC main controller; accessed during startup and runtime parameter updates. Use Value: Enables field reconfiguration without firmware reflashing; 100-year retention ensures data integrity across multi-decade equipment lifecycles. | Use Scenario: Holding fuel injection timing maps, sensor offset corrections, and emission control thresholds in gasoline engine control units operating under hood temperatures up to 125°C. IC Role / Device Role / Timing Role: SPI-connected calibration memory co-located with MCU; read at boot and updated during dealer reprogramming sessions. Use Value: Automotive-grade temperature qualification and 1M endurance support repeated dealership updates over vehicle lifetime. |
| Medical Device Setup Profiles | Smart Energy Meter Firmware Parameters |
Use Scenario: Saving user-defined therapy settings, alarm thresholds, and device calibration offsets in portable infusion pumps and dialysis monitors. IC Role / Device Role / Timing Role: Secure configuration store accessed by safety-certified microcontroller; protected via WP pin and status register lock. Use Value: Block write protection prevents accidental overwrites of critical safety parameters; 2.7–5.5 V operation matches medical-grade power rails. | Use Scenario: Storing tariff schedules, communication keys, and metering calibration constants in ANSI C12.22-compliant smart electricity meters installed in outdoor enclosures. IC Role / Device Role / Timing Role: SPI EEPROM used for secure, long-life parameter storage; accessed during firmware upgrade and time-of-use billing transitions. Use Value: 100-year data retention meets utility industry requirements for 20+ year field deployment without maintenance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95160-DW | STMicroelectronics 16 Kbit SPI EEPROM; identical 2.7–5.5 V range, 20 MHz speed, and SOIC-8 package; differs in status register bit layout and HOLD timing specs | Same industrial temperature grade; supports same page write size but uses different op-code set for WRSR | Select when ST ecosystem alignment or dual-sourcing is required; verify HOLD behavior and status register initialization in firmware |
| BR24G16NUX | Rohm 16 Kbit SPI EEPROM; supports 1.7–5.5 V range, 10 MHz max clock at 1.8 V, SOIC-8 package; lower standby current (100 nA) | Better ultra-low-power suitability for battery-backed applications; lacks extended temperature grade (−40°C to +105°C only) | Prefer for energy-harvesting or coin-cell-powered devices where sub-µA sleep current is critical; not suitable for under-hood automotive use |
Compared with M95160-DW and BR24G16NUX, AT25160AN-10SI-2.7 offers guaranteed −40°C to +125°C operation and tighter AC timing margins at 20 MHz, making it optimal for high-reliability industrial and automotive designs where thermal robustness outweighs marginal power savings.
Availability
AT25160AN-10SI-2.7 is available at Aetrix Electronics and suitable for industrial PLCs, automotive ECUs, medical infusion pumps, and smart energy meters requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for AT25160AN-10SI-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 a focus on embedded control and connectivity.
The AT25160AN-10SI-2.7 belongs to Microchip's legacy Atmel SPI EEPROM product line, engineered for reliable nonvolatile data storage in harsh environments including automotive, industrial, and medical applications.
FAQ
What is the memory organization of the AT25160AN-10SI-2.7?
The AT25160AN-10SI-2.7 contains 16,384 bits of EEPROM memory organized as 2048 words × 8 bits. This structure supports byte-addressable access via SPI, with address range A10–A0 (11-bit addressing), and is optimized for storing configuration data, calibration values, or event logs in resource-constrained embedded systems. The AT25160AN-10SI-2.7 uses this fixed layout across all operating voltages and temperatures.
Does the AT25160AN-10SI-2.7 support both 3.3 V and 5 V microcontrollers?
Yes, the AT25160AN-10SI-2.7 operates from 2.7 V to 5.5 V, making it compatible with both 3.3 V and 5 V logic families without external level shifters. Its VIH and VIL thresholds scale with VCC (e.g., VIH ≥ 0.7×VCC), and DC characteristics are fully specified across this range. The AT25160AN-10SI-2.7 maintains 20 MHz max SCK frequency at 5 V and 10 MHz at 2.7 V, ensuring robust timing margins in mixed-voltage systems.
How does block write protection work on the AT25160AN-10SI-2.7?
Block write protection on the AT25160AN-10SI-2.7 is controlled by two nonvolatile status register bits (BP1, BP0) that define protected address ranges: 0600–07FF hex for 1/4-array lock, 0400–07FF for 1/2-array, or 0000–07FF for full-array protection. These bits are set via WRSR instruction and persist through power cycles. The AT25160AN-10SI-2.7 enforces protection regardless of WP pin state unless WPEN = 0, allowing flexible security policies.
What is the purpose of the HOLD pin on the AT25160AN-10SI-2.7?
The HOLD pin on the AT25160AN-10SI-2.7 allows a master MCU to temporarily suspend an ongoing SPI transaction without resetting the internal address counter or command state. When asserted low (with SCK low), SO enters high-impedance and SI is ignored; resuming requires bringing HOLD high while SCK remains low. This feature enables priority interrupt handling in real-time systems. The AT25160AN-10SI-2.7 retains full context during HOLD, ensuring seamless continuation.
Is the AT25160AN-10SI-2.7 qualified for automotive applications?
Yes, the AT25160AN-10SI-2.7 is explicitly qualified for automotive-grade extended temperature operation (−40°C to +125°C) and offered in lead-free/halogen-free variants. It meets AEC-Q100 stress testing requirements for reliability in engine control, body electronics, and ADAS subsystems. The AT25160AN-10SI-2.7 datasheet specifies DC and AC parameters across this full range, confirming suitability for under-hood deployment where thermal stability is critical.
AT25160AN-10SI-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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-SOIC
AT25160AN-10SI-2.7 FAQ
1.How can I place an order for AT25160AN-10SI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25160AN-10SI-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 AT25160AN-10SI-2.7 reliable?
The price and inventory of AT25160AN-10SI-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 AT25160AN-10SI-2.7 is usually 5 days.
3.What payment methods are accepted for AT25160AN-10SI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25160AN-10SI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25160AN-10SI-2.7?
AT25160AN-10SI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25160AN-10SI-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 AT25160AN-10SI-2.7?
For technical support, including AT25160AN-10SI-2.7 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 requirements.
6.How does Aetrix verify that AT25160AN-10SI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT25160AN-10SI-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 AT25160AN-10SI-2.7 meets industry standards.
7.What is the process for return or replacement of AT25160AN-10SI-2.7?
All AT25160AN-10SI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT25160AN-10SI-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 AT25160AN-10SI-2.7 part is unused and in its original packaging.
Return procedure for AT25160AN-10SI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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