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Microchip Technology AT25160AN-10SI-1.8-T
- Part No.:
- AT25160AN-10SI-1.8-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT25160AN-10SI-1.8-T.pdf
- Description:
- IC EEPROM 16KBIT SPI 20MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,181
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Product details
Overview
AT25160AN-10SI-1.8-T 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-T datasheet, AT25160AN-10SI-1.8-T pinout, AT25160AN-10SI-1.8-T application, or AT25160AN-10SI-1.8-T equivalent, key selection considerations include low-voltage operation down to 1.8V, hardware/software write protection via WP pin and status register, block protection granularity (1/4, 1/2, or full array), and compatibility with SPI Modes 0 and 3 in space-constrained SOIC-8 layouts.
Technical Context
The AT25160AN-10SI-1.8-T implements a synchronous SPI slave interface with separate SI/SO lines, MSB-first data framing, and CS-driven command sequencing. Its internal architecture includes an 8-bit instruction register supporting WREN/WRDI/RDSR/WRSR/READ/WRITE op-codes and a nonvolatile status register with BP0/BP1/WPEN bits controlling block protection and hardware write enable.
It features self-timed internal write cycles (≤5 ms), no external erase requirement, and dual-voltage qualification: guaranteed operation across 1.8–5.5V supply range with distinct DC/AC timing specs per voltage tier (e.g., 20 MHz max at 5V, 10 MHz at 2.7V, 5 MHz at 1.8V). HOLD pin enables serial communication suspension without reset.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 16 Kbit (2048 × 8), sufficient for firmware parameter tables or calibration data in compact embedded systems |
| Supply voltage | 1.8 V to 5.5 V - supports direct interfacing with 1.8V logic families and legacy 5V microcontrollers without level shifters |
| Max clock frequency | 20 MHz at VCC = 5.0 V - enables fast configuration read/write during boot or runtime updates |
| Page write size | 32 bytes - minimizes write latency versus byte-write-only EEPROMs; reduces host MCU overhead |
| Write endurance | 1 million cycles - suitable for applications requiring frequent logging or counter updates |
| Data retention | 100 years at 25°C - ensures long-term reliability in unattended equipment like utility meters or remote sensors |
| Operating temperature | −40°C to +125°C - qualified for under-hood automotive ECUs and industrial motor drives |
Pinout & Package
AT25160AN-10SI-1.8-T is supplied in an 8-lead JEDEC SOIC package (8S1), 0.150" wide, with standard gull-wing leads and 1.27 mm pitch. Dimensions: 4.90 mm × 3.99 mm body, 1.35–1.75 mm height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; must be held low for entire SPI transaction; controls SO output state (high-Z when high) |
| SCK | Serial Clock | Master-generated clock; defines timing for SI sampling and SO output; supports SPI Modes 0 and 3 |
| SI | Serial Data Input | Receives op-code, address, and data; MSB-first; ignored unless CS is low and device is write-enabled |
| SO | Serial Data Output | Drives read data or status bits; high-impedance when CS high or during HOLD assertion |
| GND | Ground | Reference for all I/O and power pins; requires low-impedance connection to minimize noise coupling |
| VCC | Power Supply | Single-supply input; decoupling capacitor (0.1 µF ceramic) required near pin for stable 1.8–5.5 V operation |
| WP | Write Protect | Hardware lock for status register and protected memory blocks when WPEN=1; tied high for normal operation |
| HOLD | Communication Suspend | Pauses ongoing SPI transfer without resetting sequence; requires SCK low during assertion/deassertion |
Key Features
| Feature | Design Value |
|---|---|
| SPI Mode 0 & 3 compatibility | Interoperates with common MCU peripherals (e.g., PIC, STM32, NXP Kinetis) without custom driver modifications |
| Block write protection (1/4, 1/2, full array) | Enables secure partitioning - e.g., protect bootloader config while allowing user settings update |
| Self-timed 5 ms max write cycle | Eliminates need for external polling delay; RDSR bit 0 provides precise READY/BUSY status |
| 1.8V–5.5V operation with single supply | Reduces BOM count by removing level shifters in mixed-voltage systems (e.g., 1.8V sensor + 3.3V MCU) |
| Automotive-grade temp range (−40°C to +125°C) | Validated for engine control units, ADAS modules, and industrial PLCs exposed to thermal cycling |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Storing motor calibration coefficients, fault history logs, and runtime parameters in variable-frequency drives. IC Role / Device Role / Timing Role: Nonvolatile configuration storage with deterministic 5 ms write latency and 1M-cycle endurance for field-updatable parameters. Use Value: Enables field recalibration without reprogramming MCU flash; retains settings through power loss and thermal stress up to +125°C. | Use Scenario: Retaining door lock states, mirror position memory, and lighting profiles in vehicle body controllers. IC Role / Device Role / Timing Role: SPI-configurable EEPROM interfacing directly with 3.3V automotive MCUs (e.g., S32K144) using Mode 0 timing. Use Value: Hardware write protection (WP pin) prevents accidental overwrites during CAN bus firmware updates or ECU resets. |
| Medical Infusion Pumps | Smart Energy Meters |
Use Scenario: Recording dose delivery history, alarm thresholds, and user preferences in battery-powered portable devices. IC Role / Device Role / Timing Role: Low-power 1.8V operation enables direct connection to ultra-low-power microcontrollers (e.g., MSP430FRxx) during sleep modes. Use Value: Standby current <0.1 µA at 1.8V extends battery life; 100-year data retention ensures audit trail integrity over device lifetime. | Use Scenario: Storing tariff schedules, metering registers, and tamper-event timestamps in ANSI C12.22-compliant smart meters. IC Role / Device Role / Timing Role: Block-protected memory segments isolate critical billing data from user-modifiable settings. Use Value: BP0/BP1 bits enforce write-lock on revenue-grade registers while permitting firmware patch updates to non-critical sections. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95160-DRMN6TP/K | STMicroelectronics 16 Kbit SPI EEPROM; identical 8-lead SOIC package, 1.8–5.5 V, but rated only to +85°C industrial grade (not extended temp) | Lacks −40°C to +125°C qualification; unsuitable for under-hood automotive or high-temp industrial enclosures | Select when cost sensitivity outweighs extended temperature needs and system ambient stays ≤85°C |
| BR24G16NUX-10 | Rohm 16 Kbit SPI EEPROM; same SOIC-8 footprint, 1.7–5.5 V, but uses different status register layout and lacks HOLD pin | No HOLD functionality limits use in multi-master or interrupt-driven SPI environments requiring pause/resume | Choose where HOLD is unused and tighter 1.7V min supply supports ultra-low-power designs |
Compared with M95160-DRMN6TP/K and BR24G16NUX-10, the AT25160AN-10SI-1.8-T uniquely combines extended temperature operation, HOLD pin support, and Atmel's proven block protection architecture - making it optimal for safety-critical or thermally demanding deployments where robustness and feature completeness are prioritized.
Availability
AT25160AN-10SI-1.8-T is available at Aetrix Electronics and suitable for industrial motor drives, 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-1.8-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 manufacturer specializing in microcontrollers, analog, FPGA, and memory solutions, with a focus on embedded control and connectivity.
The AT25160AN-10SI-1.8-T belongs to Microchip's AT25xxx family of SPI serial EEPROMs, designed specifically for reliable, low-voltage nonvolatile storage in automotive, industrial, and medical systems demanding extended temperature operation and robust data integrity.
FAQ
What is the maximum clock frequency supported by the AT25160AN-10SI-1.8-T at 1.8V supply?
The AT25160AN-10SI-1.8-T supports a maximum SCK frequency of 5 MHz when operated at 1.8V, as specified in the AC Characteristics table for the 1.8–5.5V voltage range. This ensures reliable timing margins for low-power microcontrollers running from 1.8V rails, such as certain ARM Cortex-M0+ or RISC-V SoCs used in portable medical devices.
Does the AT25160AN-10SI-1.8-T require an external erase cycle before writing?
No, the AT25160AN-10SI-1.8-T does not require a separate erase cycle. All programming is performed via the WRITE instruction, and the device handles internal erase-and-write automatically during each self-timed write cycle (≤5 ms). This simplifies firmware design and eliminates erase-related timing complexity compared to parallel EEPROMs or Flash memory.
How is block write protection configured on the AT25160AN-10SI-1.8-T?
Block write protection on the AT25160AN-10SI-1.8-T is configured by setting BP0 and BP1 bits in the nonvolatile status register using the WRSR instruction. These bits define four protection levels: none (00), 1/4 array (01), 1/2 array (10), or full array (11). For AT25160A, 1/4 protection covers addresses 0600–07FFh, enabling selective locking of critical configuration sectors.
Can the AT25160AN-10SI-1.8-T operate with a 3.3V microcontroller using SPI Mode 3?
Yes, the AT25160AN-10SI-1.8-T fully supports SPI Mode 3 (CPOL=1, CPHA=1) at 3.3V supply. Its input thresholds (VIH ≥ 0.7×VCC, VIL ≤ 0.3×VCC) and 3.3V-compatible timing (10 MHz max clock) ensure interoperability with common 3.3V MCUs like the STM32F4 series or NXP LPC55S69 without level translation.
What is the function of the HOLD pin on the AT25160AN-10SI-1.8-T?
The HOLD pin on the AT25160AN-10SI-1.8-T suspends ongoing SPI communication without resetting the internal command sequence. When asserted low while SCK is low, it places SO in high-impedance and ignores SI inputs; deassertion resumes from the exact bit position. This enables priority interrupt handling in real-time systems without losing transaction context.
AT25160AN-10SI-1.8-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:
- 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-T FAQ
1.How can I place an order for AT25160AN-10SI-1.8-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25160AN-10SI-1.8-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-1.8-T reliable?
The price and inventory of AT25160AN-10SI-1.8-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-1.8-T is usually 5 days.
3.What payment methods are accepted for AT25160AN-10SI-1.8-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25160AN-10SI-1.8-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25160AN-10SI-1.8-T?
AT25160AN-10SI-1.8-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25160AN-10SI-1.8-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-1.8-T?
For technical support, including AT25160AN-10SI-1.8-T 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-T requirements.
6.How does Aetrix verify that AT25160AN-10SI-1.8-T is sourced from the original manufacturer or authorized distributors?
All AT25160AN-10SI-1.8-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-1.8-T meets industry standards.
7.What is the process for return or replacement of AT25160AN-10SI-1.8-T?
All AT25160AN-10SI-1.8-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25160AN-10SI-1.8-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-1.8-T part is unused and in its original packaging.
Return procedure for AT25160AN-10SI-1.8-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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