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Microchip Technology AT25160-10PC-1.8
- Part No.:
- AT25160-10PC-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT25160-10PC-1.8.pdf
- Description:
- IC EEPROM 16KBIT SPI 3MHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,702
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Product details
Overview
AT25160-10PC-1.8 from Atmel (now Microchip) is a 16-kbit SPI serial EEPROM organized as 2048 × 8 bits, operating from 1.8 V to 3.6 V with 5 ms typical write cycle time, 32-byte page write capability, and hardware/software write protection via WP pin and status register. It serves as nonvolatile configuration storage in low-power embedded systems such as smart meters and portable medical devices.
For engineers reviewing the AT25160-10PC-1.8 datasheet, AT25160-10PC-1.8 pinout, AT25160-10PC-1.8 application, or AT25160-10PC-1.8 equivalent, key selection criteria include 1.8 V operation compatibility, SPI Mode 0/3 support, block write protection granularity (1/4, 1/2, or full array), endurance of 1 million cycles, and availability in 8-pin PDIP package for through-hole prototyping and legacy industrial designs.
Technical Context
The AT25160-10PC-1.8 implements a synchronous serial peripheral interface (SPI) slave architecture with separate SI (input) and SO (output) pins, supporting MSB-first transmission and op-code–driven command execution (e.g., WREN, WRITE, RDSR). Its internal status register controls write enable state (WEN), ready/busy flag (RDY), and block protection bits (BP0/BP1).
It features dual-level data protection: hardware-based via the WP pin (when WPEN = 1) and software-based via Write Disable (WRDI) and status register programming (WRSR). The HOLD pin enables suspension of ongoing serial transfers without resetting the sequence, while CS-driven selection ensures isolation in multi-device SPI buses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 kbit (2048 × 8-bit words) - sufficient for firmware parameter tables, calibration data, or device ID storage in resource-constrained microcontrollers. |
| Supply Voltage Range | 1.8 V to 3.6 V - enables direct interfacing with 1.8 V and 3.3 V logic families without level shifting. |
| Max Clock Frequency | 0.5 MHz at 1.8 V - defines maximum sustained read/write throughput under low-voltage operation. |
| Write Cycle Time | 20 ms max (typ. 5 ms) - determines minimum delay between write commands; impacts real-time logging latency. |
| Endurance | 1 million write cycles - supports frequent reconfiguration in field-upgradable systems like IoT edge nodes. |
| Data Retention | 100 years - ensures long-term reliability for sealed or maintenance-free deployments (e.g., utility infrastructure). |
| Operating Temperature | 0°C to +70°C (Commercial grade) - validated for indoor consumer and office equipment environments. |
Pinout & Package
AT25160-10PC-1.8 is packaged in an 8-pin PDIP (Plastic Dual Inline Package), 0.300" wide, suitable for breadboard prototyping and legacy PCB assembly. Pin 1 is marked by a notch or dot; leads are spaced on 0.100" centers.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must be held low during all SPI transactions; isolates device on shared bus. |
| SCK | Serial Clock | Input-only clock input synchronized to master; defines timing for SI sampling and SO output edges. |
| SI | Serial Data Input | Receives op-codes, addresses, and write data; sampled on SCK rising edge in SPI Mode 0. |
| SO | Serial Data Output | Drives read data and status bits; high-impedance when CS is high or during HOLD assertion. |
| GND | Ground Reference | Primary return path for VCC and I/O signals; requires low-impedance connection to minimize noise coupling. |
| VCC | Power Supply | 1.8 V to 3.6 V supply input; bypass capacitor (0.1 µF) recommended near pin for stable low-voltage 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 address counter; asserted low while SCK is low. |
Key Features
| Feature | Design Value |
|---|---|
| 1.8 V Operation | Enables integration into ultra-low-power systems powered by coin cells or energy-harvesting sources. |
| Page Write (32 bytes) | Reduces total write time versus byte-wise writes; improves efficiency when storing contiguous configuration blocks. |
| Block Write Protection | Configurable 1/4, 1/2, or full-array lock prevents accidental overwrites of critical firmware or calibration data. |
| Self-timed Write Cycle | Eliminates need for external timing control or polling overhead beyond RDSR readiness check. |
| Industrial-grade Reliability | 1M write cycles and 100-year retention meet requirements for unattended deployment in metering and automation. |
Applications
| Smart Energy Meters | Portable Medical Devices |
|---|---|
|
Use Scenario: Storing tariff schedules, consumption logs, and cryptographic keys in ANSI C12.19-compliant electricity meters. IC Role / Device Role / Timing Role: Nonvolatile configuration and event-history storage interfaced to an 8-bit MCU via SPI. Use Value: 1.8 V operation allows direct connection to meter's 3.3 V rail with no level shifter; 1M endurance supports daily firmware updates over 10+ years. |
Use Scenario: Saving patient calibration profiles and sensor offset corrections in handheld glucose monitors. IC Role / Device Role / Timing Role: Persistent parameter storage accessed during power-up and user-initiated recalibration. Use Value: 5 ms typical write time enables fast profile switching; block protection prevents corruption of factory-set calibration constants. |
| Industrial PLC I/O Modules | Consumer Audio Equipment |
|
Use Scenario: Retaining channel mapping, scaling factors, and fault history in DIN-rail-mounted analog input modules. IC Role / Device Role / Timing Role: Configuration EEPROM co-located with ADC driver IC on modular I/O carrier board. Use Value: HOLD pin allows CPU to pause EEPROM access during high-priority interrupt service routines without losing context. |
Use Scenario: Storing user EQ presets, volume limits, and Bluetooth pairing information in battery-powered wireless speakers. IC Role / Device Role / Timing Role: Low-voltage nonvolatile memory interfaced to a 32-bit audio SoC with SPI master controller. Use Value: 0.1 µA standby current at 1.8 V extends battery life between charges; WP pin hardens against firmware corruption during brown-out events. |
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 | 16 kbit SPI EEPROM, 1.8–5.5 V, 20 MHz max clock, SO8 package only - no PDIP option. | Higher speed but lacks 8-pin PDIP; better for high-throughput logging, less suitable for through-hole prototyping. | Select when board layout supports SOIC and system requires >0.5 MHz write throughput. |
| 25AA160CT-I/OT | 16 kbit SPI EEPROM, 1.8–5.5 V, 10 MHz max clock, SOT-23-6 package - 6-pin, no HOLD or WP pins. | Space-constrained designs where HOLD/WP functionality is not required; simplified pin count reduces routing complexity. | Select for ultra-compact PCBs where footprint size outweighs need for hardware write suspend/protection. |
Compared with M95160-WMN6TP and 25AA160CT-I/OT, AT25160-10PC-1.8 uniquely combines 8-pin PDIP packaging, dedicated HOLD and WP pins, and guaranteed 1.8 V operation - making it optimal for cost-sensitive, low-speed, through-hole industrial control and legacy design refreshes.
Availability
AT25160-10PC-1.8 is available at Aetrix Electronics and suitable for smart energy meters, portable medical devices, industrial PLC I/O modules, and consumer audio equipment requiring stable component supply across extended product lifecycles.
Supply support for AT25160-10PC-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 (formerly Atmel) is a global semiconductor company specializing in microcontrollers, analog devices, and nonvolatile memory solutions for embedded control applications.
The AT25xxx family was designed specifically for reliable, low-voltage SPI-based configuration and data logging in industrial, automotive, and consumer electronics - emphasizing robustness, ease of integration, and long-term data integrity.
FAQ
What voltage range does the AT25160-10PC-1.8 support, and why is that important?
The AT25160-10PC-1.8 operates from 1.8 V to 3.6 V, enabling direct use with modern low-power microcontrollers and battery-powered systems. This eliminates level-shifting circuitry, reduces BOM cost, and simplifies power domain design - especially critical in portable and energy-harvesting applications where AT25160-10PC-1.8 serves as primary configuration storage.
Does the AT25160-10PC-1.8 support SPI Mode 0 and Mode 3, and how does that affect MCU compatibility?
Yes, AT25160-10PC-1.8 supports both SPI Mode 0 (CPOL = 0, CPHA = 0) and Mode 3 (CPOL = 1, CPHA = 1), matching common MCU peripherals including PIC, AVR, and ARM Cortex-M SPI controllers. This dual-mode support ensures seamless integration without firmware workarounds or clock polarity inversion logic - a key advantage over single-mode EEPROMs when AT25160-10PC-1.8 is used in mixed-vendor designs.
How does the block write protection feature work on the AT25160-10PC-1.8?
AT25160-10PC-1.8 uses two nonvolatile status register bits (BP0, BP1) to configure protection of 1/4, 1/2, or the entire memory array. When set, these bits prevent writes to designated address ranges - for example, protecting the first 512 bytes containing bootloader parameters. Protection is enforced regardless of WP pin state unless WPEN = 0, and AT25160-10PC-1.8 retains this setting across power cycles.
What is the purpose of the HOLD pin on the AT25160-10PC-1.8, and when should it be used?
The HOLD pin on AT25160-10PC-1.8 suspends ongoing SPI communication without resetting the internal address counter or command state. It is used when higher-priority interrupts require immediate CPU attention - for instance, in motor control systems where AT25160-10PC-1.8 stores tuning parameters but must yield to real-time PWM updates. Resuming after HOLD preserves transaction integrity without reinitializing CS or retransmitting op-codes.
Can the AT25160-10PC-1.8 be used in place of the AT25160-10PC without changes to hardware or firmware?
Yes - AT25160-10PC-1.8 is functionally identical to AT25160-10PC except for its lower 1.8 V–3.6 V supply range (vs. 4.5 V–5.5 V for the -10PC variant). Pinout, instruction set, timing, and protection features are fully compatible. Firmware requires no modification, and PCB layout remains unchanged; only VCC decoupling and system power rail must be verified for 1.8 V compliance before substituting AT25160-10PC-1.8.
AT25160-10PC-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:
- 3 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- -
- Voltage - Supply:
- 1.8V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT25160-10PC-1.8 FAQ
1.How can I place an order for AT25160-10PC-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25160-10PC-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 AT25160-10PC-1.8 reliable?
The price and inventory of AT25160-10PC-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 AT25160-10PC-1.8 is usually 5 days.
3.What payment methods are accepted for AT25160-10PC-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25160-10PC-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25160-10PC-1.8?
AT25160-10PC-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25160-10PC-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 AT25160-10PC-1.8?
For technical support, including AT25160-10PC-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25160-10PC-1.8 requirements.
6.How does Aetrix verify that AT25160-10PC-1.8 is sourced from the original manufacturer or authorized distributors?
All AT25160-10PC-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 AT25160-10PC-1.8 meets industry standards.
7.What is the process for return or replacement of AT25160-10PC-1.8?
All AT25160-10PC-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT25160-10PC-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 AT25160-10PC-1.8 part is unused and in its original packaging.
Return procedure for AT25160-10PC-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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