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Microchip Technology AT25160A-10PU-1.8
- Part No.:
- AT25160A-10PU-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT25160A-10PU-1.8.pdf
- Description:
- IC EEPROM 16KBIT SPI 20MHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,936
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Product details
Overview
AT25160A-10PU-1.8 from Microchip Technology (formerly Atmel) is a 16-Kbit SPI serial EEPROM organized as 2048 × 8 bits, operating from 1.8 V to 5.5 V, supporting 20 MHz clock rate at 5 V, with 32-byte page write capability and hardware/software write protection. It serves as nonvolatile configuration storage in industrial control modules requiring low-voltage operation and robust data retention.
For engineers reviewing the AT25160A-10PU-1.8 datasheet, AT25160A-10PU-1.8 pinout, AT25160A-10PU-1.8 application, or AT25160A-10PU-1.8 equivalent, key selection criteria include 1.8 V minimum supply voltage, SPI Mode 0/3 compatibility, block write protection granularity (1/4, 1/2, or full array), self-timed 5 ms max write cycle, and JEDEC PDIP-8 package with through-hole mounting.
Technical Context
The AT25160A-10PU-1.8 implements a synchronous serial peripheral interface (SPI) slave architecture with separate SI/SO pins, MSB-first data framing, and op-code–driven command execution. It requires WREN before WRITE and supports HOLD for communication suspension without sequence reset.
Its status register includes nonvolatile BP0/BP1 bits for configurable block protection and WPEN bit enabling hardware write protection via the WP pin. Internal write cycles are fully self-timed, require no external erase step, and inhibit all commands except RDSR until completion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 words × 8 bits), sufficient for firmware parameter tables or calibration data in space-constrained designs. |
| Supply Voltage Range | 1.8 V to 5.5 V - enables direct interfacing with 1.8 V, 2.5 V, 3.3 V, and 5 V microcontrollers without level shifting. |
| Max Clock Frequency | 20 MHz at VCC = 5 V - supports high-throughput configuration reads in real-time systems. |
| Page Write Size | 32 bytes - allows efficient burst writes while minimizing bus occupancy and power consumption per write operation. |
| Write Endurance | 1 million cycles - ensures reliable logging or counter updates over extended product lifetimes. |
| Data Retention | 100 years - guarantees long-term integrity of stored calibration coefficients or security keys without refresh. |
| Operating Temperature | –40 °C to +85 °C - qualified for industrial environments including factory automation and outdoor metering. |
Pinout & Package
AT25160A-10PU-1.8 is packaged in an 8-lead JEDEC PDIP (0.300" wide body, part code 8P3), suitable for prototyping, through-hole assembly, and legacy board designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; device ignores SI and drives SO high-Z when CS is high. |
| SCK | Serial Clock | Input-only clock synchronized to master; supports SPI Modes 0 and 3 (CPOL=0, CPHA=0 or CPOL=1, CPHA=1). |
| SI | Serial Data Input | Accepts op-codes, addresses, and data; MSB-first transmission required. |
| SO | Serial Data Output | Tri-state output delivering read data or status bits; high-Z when CS is high or during HOLD. |
| GND | Ground Reference | Primary return path for VCC and I/O signals; must be low-impedance for noise immunity. |
| VCC | Power Supply | Single supply input (1.8–5.5 V); powers internal logic and memory array; decoupling capacitor required. |
| WP | Write Protect | Hardware lock for status register and protected memory blocks when WPEN=1 and WP=low. |
| HOLD | Communication Suspend | Pauses ongoing SPI transfer without resetting address counter; requires SCK low during assertion. |
Key Features
| Feature | Design Value |
|---|---|
| SPI Mode 0 & 3 Support | Interoperates with diverse microcontrollers including 68HC11, PIC, and ARM Cortex-M families without protocol translation. |
| Block Write Protection | Configurable via status register to protect 0%, 25%, 50%, or 100% of memory - prevents accidental overwrite of critical boot parameters. |
| Self-timed Write Cycle | Eliminates need for external timing control or polling delay; maximum 5 ms duration ensures predictable system response. |
| Low-Voltage Operation | Full functionality down to 1.8 V enables integration into battery-powered or energy-harvesting systems with minimal voltage regulation. |
| HOLD Pin Functionality | Allows multi-master arbitration or CPU interrupt servicing without losing SPI state - preserves address pointer across suspend/resume. |
Applications
| Industrial PLC Configuration Storage | Medical Device Calibration Data |
|---|---|
Use Scenario: Storing I/O mapping, scaling factors, and alarm thresholds in programmable logic controllers deployed in harsh factory environments. IC Role / Device Role / Timing Role: Nonvolatile configuration EEPROM interfaced directly to PLC's SPI-capable MCU for persistent parameter retention across power cycles. Use Value: 100-year data retention and –40°C to +85°C operation ensure reliability over decades without maintenance or recalibration. | Use Scenario: Holding sensor offset/gain coefficients and regulatory compliance logs in portable diagnostic equipment powered by single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Low-voltage (1.8 V) serial EEPROM providing secure, tamper-resistant storage for FDA-mandated calibration records. Use Value: Hardware write protection (WP pin + BP bits) prevents unauthorized modification of calibration data during field servicing. |
| Automotive Body Control Module | Smart Energy Meter Firmware Parameters |
Use Scenario: Saving seat/mirror position presets and lighting profiles in automotive BCMs where ECU voltage may dip below 2.7 V during cranking. IC Role / Device Role / Timing Role: SPI EEPROM acting as user preference store, accessed during vehicle startup before full 12 V stabilization. Use Value: Guaranteed operation down to 1.8 V eliminates need for auxiliary voltage regulators, reducing BOM cost and board area. | Use Scenario: Storing tariff schedules, demand-response settings, and cryptographic keys in ANSI C12.22–compliant smart meters with frequent firmware updates. IC Role / Device Role / Timing Role: High-endurance (1M cycles) EEPROM supporting daily parameter revisions and secure key rotation over 15+ year service life. Use Value: 32-byte page writes minimize SPI transaction overhead during OTA updates, improving update success rate in noisy grid environments. |
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 1.8–5.5 V range and 20 MHz speed, but uses different status register bit layout for protection. | Same industrial temperature grade and PDIP-8 package; differs in HOLD timing requirements (tHD/tCD tighter by 5 ns). | Select when existing ST ecosystem design reuse is prioritized; verify HOLD timing margins in high-noise environments. |
| BR24G16NUX-10 | Rohm 16 Kbit SPI EEPROM; supports 1.6–5.5 V, 10 MHz max at 1.6 V, and offers built-in error correction (ECC) on read. | Available only in TSSOP-8 and USON-8 packages - not pin-compatible with PDIP-8; lacks WP/HOLD pins. | Choose for ultra-low-voltage (1.6 V) or ECC-requiring applications; requires PCB redesign due to package and pinout mismatch. |
Compared with M95160-WMN6TP and BR24G16NUX-10, the AT25160A-10PU-1.8 provides guaranteed PDIP-8 compatibility, explicit 1.8 V operation validation, and dual-mode SPI flexibility - making it optimal for legacy industrial upgrades and through-hole prototyping where pinout stability and broad voltage margin are critical.
Availability
AT25160A-10PU-1.8 is available at Aetrix Electronics and suitable for industrial control systems, medical diagnostics equipment, automotive body electronics, and smart utility metering requiring stable component supply and long-term obsolescence management.
Supply support for AT25160A-10PU-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 devices, and nonvolatile memory solutions, with a focus on reliability and long-term product support.
The AT25160A-10PU-1.8 belongs to Microchip's legacy AT25xxx SPI EEPROM family, designed specifically for industrial and automotive applications demanding low-voltage operation, high endurance, and flexible block-level write protection.
FAQ
What is the minimum supply voltage required for reliable operation of the AT25160A-10PU-1.8?
The AT25160A-10PU-1.8 is specified to operate reliably down to 1.8 V across its full industrial temperature range (–40°C to +85°C). This is explicitly validated in the DC Characteristics table under VCC1 parameter, enabling direct use with 1.8 V logic families without level shifters or voltage boosters.
Does the AT25160A-10PU-1.8 support both SPI Mode 0 and Mode 3, and how is mode selection handled?
Yes, the AT25160A-10PU-1.8 supports both SPI Mode 0 (CPOL = 0, CPHA = 0) and Mode 3 (CPOL = 1, CPHA = 1). Mode selection is determined solely by the master controller's clock polarity and phase configuration; no internal register setting or command is required on the AT25160A-10PU-1.8 side.
How does the block write protection feature work on the AT25160A-10PU-1.8, and what memory regions can be protected?
The AT25160A-10PU-1.8 uses two status register bits (BP1, BP0) to configure protection of 0%, 25%, 50%, or 100% of its 2048-word array. For this part, protection levels correspond to address ranges: 0x0600–0x07FF (25%), 0x0400–0x07FF (50%), or 0x0000–0x07FF (100%). Protected regions allow reads but reject writes unless protection is disabled.
What is the maximum clock frequency supported by the AT25160A-10PU-1.8, and does it vary with supply voltage?
The AT25160A-10PU-1.8 supports up to 20 MHz at VCC = 4.5–5.5 V, 10 MHz at VCC = 2.7–5.5 V, and 5 MHz at VCC = 1.8–5.5 V. These values are specified in Table 1-3 (AC Characteristics) and reflect guaranteed timing margins - higher frequencies are not characterized or supported.
Can the AT25160A-10PU-1.8 be used in automotive applications, and what qualification level does it meet?
The AT25160A-10PU-1.8 is offered in an automotive-grade variant (AT25160A-10PU-1.8A), but the standard AT25160A-10PU-1.8 is rated for industrial temperature (–40°C to +85°C) and is not AEC-Q100 qualified. It is suitable for under-hood-adjacent or cabin-mounted systems meeting industrial reliability requirements, but not for safety-critical powertrain applications.
AT25160A-10PU-1.8 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:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT25160A-10PU-1.8 FAQ
1.How can I place an order for AT25160A-10PU-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25160A-10PU-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 AT25160A-10PU-1.8 reliable?
The price and inventory of AT25160A-10PU-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 AT25160A-10PU-1.8 is usually 5 days.
3.What payment methods are accepted for AT25160A-10PU-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25160A-10PU-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25160A-10PU-1.8?
AT25160A-10PU-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25160A-10PU-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 AT25160A-10PU-1.8?
For technical support, including AT25160A-10PU-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25160A-10PU-1.8 requirements.
6.How does Aetrix verify that AT25160A-10PU-1.8 is sourced from the original manufacturer or authorized distributors?
All AT25160A-10PU-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 AT25160A-10PU-1.8 meets industry standards.
7.What is the process for return or replacement of AT25160A-10PU-1.8?
All AT25160A-10PU-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT25160A-10PU-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 AT25160A-10PU-1.8 part is unused and in its original packaging.
Return procedure for AT25160A-10PU-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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