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Microchip Technology AT25160AN-10SI-1.8
- Part No.:
- AT25160AN-10SI-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT25160AN-10SI-1.8.pdf
- Description:
- IC EEPROM 16KBIT SPI 20MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,153
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Product details
Overview
AT25160AN-10SI-1.8 from Microchip Technology (formerly Atmel) is a 16-kbit SPI serial EEPROM organized as 2048 × 8 bits, operating from 1.8V 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-1.8 datasheet, AT25160AN-10SI-1.8 pinout, AT25160AN-10SI-1.8 application, or AT25160AN-10SI-1.8 equivalent, key selection criteria include low-voltage operation down to 1.8V, block write protection granularity (1/4, 1/2, or full array), HOLD/CS suspend functionality, and JEDEC SOIC-8 packaging compatibility with space-constrained PCB layouts.
Technical Context
The AT25160AN-10SI-1.8 implements a synchronous SPI slave interface compliant with Modes 0 and 3, using separate SI/SO lines and supporting MSB-first data transfer. Its internal architecture includes an 8-bit instruction register handling WREN, WRDI, RDSR, WRSR, READ, and WRITE op-codes with automatic address increment during sequential reads.
It features dual-layer write protection: hardware via the WP pin (when WPEN=1) and software via status register BP0/BP1 bits enabling 1/4-, 1/2-, or full-array lock. The device performs self-timed writes (≤5 ms) without external erase cycles and maintains data integrity across 1 million write cycles and 100-year retention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8-bit words) - supports firmware parameter tables and calibration data storage in resource-limited embedded systems |
| Supply Voltage Range | 1.8 V to 5.5 V - enables direct interfacing with 1.8V logic families and mixed-voltage MCU designs without level shifters |
| Max Clock Frequency | 20 MHz at VCC = 5.0 V - delivers up to 2.5 MB/s effective throughput for rapid configuration loading |
| Page Write Size | 32 bytes - minimizes write latency per transaction while avoiding overwriting adjacent memory pages |
| Write Endurance | 1,000,000 cycles - ensures reliable logging of infrequent but critical system events over 10+ years of field operation |
| Data Retention | 100 years at +25°C - guarantees long-term preservation of factory-trimmed sensor offsets and security keys |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive ECUs and industrial motor drives with wide thermal excursions |
Pinout & Package
AT25160AN-10SI-1.8 is housed in an 8-lead JEDEC SOIC package (8S1), 0.150" wide, with gull-wing leads and standard 1.27 mm pitch. This surface-mount package supports automated assembly and provides thermal and mechanical reliability in high-vibration environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must be held low for entire SPI transaction including op-code, address, and data phases |
| SCK | Serial Clock | Input-only clock synchronized to master; defines timing for SI sampling and SO output edges per SPI Mode 0/3 |
| 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; outputs on SCK falling edge in Mode 0, high-impedance when CS high |
| GND | Ground Reference | Return path for all digital I/O and internal circuitry; requires low-impedance connection to system ground plane |
| VCC | Power Supply | Single supply input supporting 1.8–5.5 V; bypass capacitor (0.1 µF) required within 10 mm of pin |
| WP | Write Protect | Hardware lock for status register and protected memory blocks when WPEN=1; tied high for full programmability |
| HOLD | Communication Suspend | Pauses ongoing SPI transfer without resetting sequence; requires SCK low before assertion to avoid bus contention |
Key Features
| Feature | Design Value |
|---|---|
| 1.8V–5.5V Operation | Eliminates need for external voltage translators in mixed-supply systems, reducing BOM count and layout complexity |
| Block Write Protection | Configurable 1/4, 1/2, or full-array lock via nonvolatile BP0/BP1 bits-prevents accidental overwrite of boot code or calibration sectors |
| HOLD Pin Functionality | Enables time-critical MCU interrupts without aborting EEPROM transfers-critical for real-time diagnostics and fault logging |
| Self-Timed Write Cycle | Removes requirement for external write-complete polling delay; RDSR bit 0 indicates readiness with ≤5 ms worst-case latency |
| Automotive Temperature Grade | Validated for −40°C to +125°C operation-meets AEC-Q100 stress test requirements for engine control and ADAS subsystems |
Applications
| Industrial PLC I/O Module | Automotive Body Control Unit |
|---|---|
Use Scenario: Storing calibrated analog input scaling factors and digital output mapping tables that persist across power cycles. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed during MCU boot and runtime reconfiguration. Use Value: Enables field-upgradable calibration without requiring external programming hardware or firmware updates. |
Use Scenario: Retaining seat position memory, mirror angle settings, and lighting preferences for user personalization. IC Role / Device Role / Timing Role: Low-power, high-reliability parameter store interfaced directly to 1.8V CAN microcontroller peripherals. Use Value: Supports >100-year data retention and 1M write cycles-ensuring settings survive vehicle lifetime without degradation. |
| Medical Infusion Pump | Smart Energy Meter |
Use Scenario: Logging dose history, alarm thresholds, and maintenance intervals with tamper-resistant write protection. IC Role / Device Role / Timing Role: Secure configuration and event log storage with hardware WP pin enabled during normal operation. Use Value: Block write protection prevents unauthorized modification of safety-critical parameters while allowing authorized service updates. |
Use Scenario: Recording tariff schedules, meter calibration constants, and firmware version identifiers across decades of utility deployment. IC Role / Device Role / Timing Role: Long-life nonvolatile memory co-located with metrology SoC in sealed, temperature-stable enclosure. Use Value: 100-year data retention and −40°C to +125°C rating ensure accuracy compliance over full product lifecycle without periodic recalibration. |
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 16K SPI EEPROM; identical 1.8–5.5V range and 20 MHz speed, but uses different status register bit mapping for BP bits | Same industrial/automotive use cases; requires minor firmware update to match WRSR bit definitions | Select when sourcing from ST distribution channels or requiring dual-sourcing with validated second-source qualification |
| BR24G16NUX | Rohm 16K I²C EEPROM; operates at 1.7–5.5V, but uses two-wire interface instead of SPI-requires MCU I²C peripheral and different driver stack | Suitable for space-constrained designs where I²C bus sharing reduces pin count, but incompatible with existing SPI firmware | Choose only if system already uses I²C for other peripherals and board layout cannot accommodate SPI routing |
Compared with M95160-DW and BR24G16NUX, the AT25160AN-10SI-1.8 offers native SPI Mode 0/3 compatibility, HOLD pin support for interrupt-safe operation, and automotive-grade temperature validation-making it optimal for real-time embedded systems requiring deterministic timing and robust environmental resilience.
Availability
AT25160AN-10SI-1.8 is available at Aetrix Electronics and suitable for industrial automation controllers, automotive body electronics, medical infusion devices, and smart energy metering systems requiring stable component supply across extended product lifecycles.
Supply support for AT25160AN-10SI-1.8 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 components, and memory solutions, with a focus on reliability, longevity, and embedded system integration.
The AT25160AN-10SI-1.8 belongs to Microchip's legacy Atmel SPI EEPROM product line, engineered for low-power, high-endurance nonvolatile storage in harsh-environment applications including automotive, industrial, and medical equipment.
FAQ
What is the maximum clock frequency supported by the AT25160AN-10SI-1.8?
The AT25160AN-10SI-1.8 supports up to 20 MHz SCK frequency when operated at VCC = 5.0 V. At lower supply voltages (1.8 V to 3.6 V), the maximum clock rate is reduced to 5 MHz per AC characteristics tables. This ensures timing margin compliance across its full 1.8–5.5 V operating range. The AT25160AN-10SI-1.8 datasheet specifies tWH/tWL minima that scale with voltage, guaranteeing reliable setup/hold timing at each VCC level.
Does the AT25160AN-10SI-1.8 require an external erase command before writing?
No, the AT25160AN-10SI-1.8 does not require a separate erase command. All write operations are self-timed and automatically erase the target byte or page prior to programming. The device only needs a WREN instruction followed by WRITE or WRSR to initiate programming. The AT25160AN-10SI-1.8 completes internal erase-and-write within its specified 5 ms max write cycle time, eliminating firmware overhead for explicit erase management.
How does the HOLD pin function during an active SPI transaction?
The HOLD pin suspends serial communication without resetting the internal address counter or command state. When asserted low while SCK is low, the AT25160AN-10SI-1.8 places SO in high-impedance and ignores SI inputs until HOLD is deasserted (high) with SCK still low. This allows the MCU to service higher-priority interrupts and resume the exact same transaction. The AT25160AN-10SI-1.8 retains full context-including partial op-code or address bytes-enabling deterministic real-time behavior.
Can the AT25160AN-10SI-1.8 be used in automotive applications requiring AEC-Q100 qualification?
Yes, the AT25160AN-10SI-1.8 is offered in automotive-grade variants with extended temperature range (−40°C to +125°C) and lead-free/halogen-free construction. While AEC-Q100 testing is performed at the die level, this part meets the environmental stress requirements for Grade 2 (−40°C to +105°C) and Grade 1 (−40°C to +125°C) applications. The AT25160AN-10SI-1.8 ordering code suffix "-10SI-1.8" denotes industrial temperature grade, but the "-10SE-2.7" variant is explicitly qualified for extended automotive use.
What happens if the WP pin is held low during a write attempt to the AT25160AN-10SI-1.8?
If the WP pin is low and the WPEN bit in the status register is set to "1", all write operations-including WRSR and WRITE-are inhibited. The AT25160AN-10SI-1.8 will ignore the command and maintain current data. If WPEN = "0", the WP pin has no effect and writes proceed normally. The AT25160AN-10SI-1.8 status register definition confirms WPEN controls hardware protection enablement, making WP pin functionality conditional on this nonvolatile bit setting.
AT25160AN-10SI-1.8 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:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT25160AN-10SI-1.8 FAQ
1.How can I place an order for AT25160AN-10SI-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25160AN-10SI-1.8 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-1.8 reliable?
The price and inventory of AT25160AN-10SI-1.8 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-1.8 is usually 5 days.
3.What payment methods are accepted for AT25160AN-10SI-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25160AN-10SI-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25160AN-10SI-1.8?
AT25160AN-10SI-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25160AN-10SI-1.8 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-1.8?
For technical support, including AT25160AN-10SI-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25160AN-10SI-1.8 requirements.
6.How does Aetrix verify that AT25160AN-10SI-1.8 is sourced from the original manufacturer or authorized distributors?
All AT25160AN-10SI-1.8 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-1.8 meets industry standards.
7.What is the process for return or replacement of AT25160AN-10SI-1.8?
All AT25160AN-10SI-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT25160AN-10SI-1.8, 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-1.8 part is unused and in its original packaging.
Return procedure for AT25160AN-10SI-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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