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Microchip Technology AT25080-10PC
- Part No.:
- AT25080-10PC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT25080-10PC.pdf
- Description:
- IC EEPROM 8KBIT SPI 3MHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,385
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Product details
Overview
AT25080-10PC from Atmel is an 8-Kbit (1024 × 8) SPI serial EEPROM with 1.8V–3.6V low-voltage operation, 32-byte page write capability, and hardware/software write protection via WP pin and status register. It delivers 5 ms typical self-timed write cycles, 1 million endurance cycles, and 100-year data retention - deployed in industrial control modules requiring nonvolatile parameter storage under constrained power budgets.
For engineers reviewing the AT25080-10PC datasheet, AT25080-10PC pinout, AT25080-10PC application, or AT25080-10PC equivalent, key selection criteria include VCC = 1.8–3.6V compatibility, SPI Mode 0/3 support, block write protection granularity (1/4, 1/2, full array), HOLD pin suspend functionality, and PDIP-8 packaging for through-hole prototyping and legacy board replacement.
Technical Context
The AT25080-10PC operates as a slave device on a 3-wire SPI bus (CS, SCK, SI/SO), supporting MSB-first transmission and synchronous read/write sequences initiated by CS falling edge. Its instruction set includes WREN/WRDI for write enable/disable, RDSR/WRSR for status register access, and READ/WRITE for memory operations - all compliant with standard SPI timing requirements across voltage ranges.
Internal architecture features a nonvolatile status register with BP0/BP1 bits enabling configurable block protection, WPEN bit controlling hardware write protect pin functionality, and RDY bit indicating write cycle completion. The device uses no external erase cycle and supports automatic address incrementing during multi-byte reads and 32-byte page writes without rollover within the page boundary.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 words × 8 bits); sufficient for firmware configuration tables, calibration data, or device identity storage in compact embedded systems. |
| Supply Voltage Range | 1.8 V to 3.6 V; enables direct interface with 1.8V/2.5V/3.3V microcontrollers without level-shifting circuitry. |
| Max Clock Frequency | 0.5 MHz at 1.8–3.6 V; defines maximum SPI transaction throughput for real-time parameter updates in battery-powered sensors. |
| Write Cycle Time | 5 ms typical (20 ms max); determines minimum latency between successive write commands and impacts system responsiveness during configuration changes. |
| Endurance & Retention | 1 million write cycles / 100 years data retention; ensures long-term reliability in field-deployed equipment with infrequent but critical parameter updates. |
| Operating Temperature | 0°C to +70°C (Commercial grade); validated for use in office automation, consumer electronics, and non-automotive industrial environments. |
| Package Type | 8-pin PDIP (0.300" wide); provides mechanical robustness and hand-solderability for lab validation, repair, and low-volume manufacturing. |
Pinout & Package
AT25080-10PC is housed in an 8-pin Plastic Dual Inline Package (PDIP), 0.300" wide, with standard through-hole footprint compatible with legacy PCB layouts and socket-based test fixtures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must be held low for entire SPI transaction; high impedance SO output when CS is high. |
| SCK | Serial Clock Input | Master-generated clock synchronizing all data transfers; supports SPI Modes 0 and 3 only. |
| 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; tri-stated when CS is high or HOLD is active. |
| GND | Ground Reference | Primary return path for VCC and I/O signals; requires low-impedance connection to minimize noise coupling into SPI lines. |
| VCC | Power Supply | Single supply input (1.8–3.6 V); decoupling capacitor (0.1 µF) recommended near pin for stable operation during write cycles. |
| WP | Write Protect Input | Hardware lock for status register writes when WPEN=1; tied low to prevent accidental reconfiguration of protection settings. |
| HOLD | Communication Suspend | Pauses ongoing SPI transfer without resetting internal state; used to service higher-priority interrupts in real-time systems. |
Key Features
| Feature | Design Value |
|---|---|
| 32-byte Page Write | Enables efficient bulk programming of configuration blocks without exceeding internal write buffer limits or triggering premature rollover. |
| Four-Level Block Protection | Allows selective locking of 0%, 25%, 50%, or 100% of memory space via BP0/BP1 bits - critical for safeguarding bootloader or security keys. |
| Hardware + Software Write Protection | Combines WP pin assertion with WRSR-controlled WPEN bit to enforce dual-layer data integrity in safety-critical applications. |
| HOLD Pin Functionality | Permits deterministic suspension/resumption of SPI communication during interrupt handling - avoids loss of command context in multitasking firmware. |
| Low Standby Current | 0.1–1.0 µA at 1.8 V enables integration into always-on sensor nodes where quiescent power dominates battery life calculations. |
Applications
| Industrial PLC Configuration Storage | Medical Device Calibration Data |
|---|---|
Use Scenario: Storing I/O mapping, scaling factors, and alarm thresholds in programmable logic controllers operating in factory-floor environments with ambient temperatures up to 70°C. IC Role / Device Role / Timing Role: Nonvolatile parameter repository interfaced directly to ARM Cortex-M3/M4 microcontroller via SPI; accessed during boot and runtime reconfiguration. Use Value: Eliminates need for external voltage supervisors or backup batteries due to guaranteed 100-year retention and 1M-cycle endurance under thermal cycling stress. |
Use Scenario: Holding factory-calibrated sensor offsets and gain coefficients in portable blood glucose meters powered by coin-cell batteries. IC Role / Device Role / Timing Role: Low-power SPI EEPROM co-located with ADC and MCU; programmed once during production and read at startup. Use Value: 0.1 µA standby current at 1.8 V extends battery life beyond 2 years; 1.8–3.6 V range matches lithium-thionyl chloride cell discharge profile. |
| Point-of-Sale Terminal Settings | Smart Energy Meter Firmware Parameters |
Use Scenario: Preserving tax rate tables, receipt formatting rules, and user preferences in retail terminals subject to frequent software updates and field reprogramming. IC Role / Device Role / Timing Role: SPI-configurable memory accessible by host processor during firmware upgrade sequences; protected sections prevent corruption of regulatory compliance data. Use Value: Block write protection (BP0/BP1) isolates immutable tax tables from modifiable UI settings, reducing risk of audit failure during field deployment. |
Use Scenario: Storing tariff schedules, meter ID, and cryptographic keys in ANSI C12.19-compliant electricity meters deployed in utility substations. IC Role / Device Role / Timing Role: Secure nonvolatile storage element interfaced to secure MCU; WP pin hardwired to prevent runtime tampering with billing parameters. Use Value: Hardware write protection (WP + WPEN) enforces physical lockout of critical registers - satisfying IEC 62056-21 security requirements for revenue-grade meters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95080-WMN6TP | STMicroelectronics 8-Kbit SPI EEPROM; identical 1.8–5.5 V range, 5 ms write time, and PDIP-8 package; supports SPI Mode 0 only (not Mode 3). | Lacks HOLD pin - unsuitable for interrupt-driven SPI hosts requiring deterministic pause/resume behavior. | Select when Mode 3 compatibility is unnecessary and ST's qualification pedigree is preferred for automotive-adjacent industrial use. |
| BR24G08NUX-10 | Rohm 8-Kbit SPI EEPROM; 1.7–5.5 V range, 5 ms write time, same PDIP-8 footprint; includes built-in write inhibit during power ramp-up (VCC monitor). | Includes POR-based write protection not present in AT25080-10PC - reduces risk of spurious writes during brown-out conditions. | Choose for systems lacking external power-monitoring circuitry where robustness during unstable supply transitions is critical. |
Compared with M95080-WMN6TP and BR24G08NUX-10, the AT25080-10PC uniquely supports both SPI Modes 0 and 3, includes a dedicated HOLD pin for interrupt-safe communication, and offers finer-grained 1/4-array block protection - making it optimal for legacy microcontroller interfaces and real-time embedded systems requiring deterministic SPI control.
Availability
AT25080-10PC is available at Aetrix Electronics and suitable for industrial control modules, medical diagnostic instruments, and point-of-sale terminals requiring stable component supply across extended product lifecycles.
Supply support for AT25080-10PC 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
Atmel Corporation (now part of Microchip Technology) is a semiconductor manufacturer specializing in microcontrollers, nonvolatile memory, and wireless solutions for embedded systems.
The AT25080-10PC belongs to Atmel's SPI Serial EEPROM product line, designed specifically for reliable, low-power, pin-efficient nonvolatile storage in resource-constrained microcontroller applications - emphasizing ease of integration, data integrity, and long-term field reliability.
FAQ
What voltage range does the AT25080-10PC support, and how does it affect system design?
The AT25080-10PC supports 1.8 V to 3.6 V operation, enabling direct connection to 1.8V, 2.5V, and 3.3V microcontrollers without level shifters. This simplifies power domain partitioning and reduces bill-of-materials cost in battery-powered or mixed-voltage systems. Its specified 0.5 MHz max clock at 1.8 V ensures predictable timing margins even at minimum supply.
Does the AT25080-10PC require an external erase cycle before writing new data?
No, the AT25080-10PC performs fully self-timed write cycles with no separate erase step required. Each WRITE instruction automatically handles byte-level programming, and the internal controller manages charge injection and verification. The 5 ms typical write time includes all erase-and-program phases - streamlining firmware development and reducing host CPU overhead.
How does the HOLD pin function in the AT25080-10PC, and when should it be used?
The HOLD pin suspends ongoing SPI communication without resetting the internal state - allowing the host microcontroller to service time-critical interrupts and resume exactly where it left off. It must be asserted while SCK is low and de-asserted under the same condition. This feature is essential in real-time systems where deterministic SPI latency cannot be compromised by interrupt latency.
Can the AT25080-10PC be used in place of the AT25080-10PC-2.7 or AT25080-10PC1.8 variants?
No - the AT25080-10PC is rated for 4.5–5.5 V operation only, whereas AT25080-10PC-2.7 supports 2.7–5.5 V and AT25080-10PC1.8 supports 1.8–3.6 V. Substituting them risks functional failure or damage. The suffixes denote distinct voltage-grade versions with different internal voltage regulators and timing specifications - always match the exact ordering code to your system's VCC rail.
What protection mechanisms prevent unintended writes to the AT25080-10PC memory array?
The AT25080-10PC implements three layers: (1) software write enable (WREN instruction required before any WRITE), (2) status register-controlled block protection (BP0/BP1 bits), and (3) hardware write protect (WP pin active when WPEN=1). All three must be satisfied for a write to succeed - ensuring robust defense against firmware bugs, ESD events, or power glitches.
AT25080-10PC 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:
- 8Kbit
- Memory Organization:
- 1K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 3 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT25080-10PC FAQ
1.How can I place an order for AT25080-10PC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25080-10PC 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 AT25080-10PC reliable?
The price and inventory of AT25080-10PC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25080-10PC is usually 5 days.
3.What payment methods are accepted for AT25080-10PC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25080-10PC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25080-10PC?
AT25080-10PC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25080-10PC 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 AT25080-10PC?
For technical support, including AT25080-10PC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25080-10PC requirements.
6.How does Aetrix verify that AT25080-10PC is sourced from the original manufacturer or authorized distributors?
All AT25080-10PC 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 AT25080-10PC meets industry standards.
7.What is the process for return or replacement of AT25080-10PC?
All AT25080-10PC units undergo pre-shipment inspection (PSI). If there is an issue with AT25080-10PC, 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 AT25080-10PC part is unused and in its original packaging.
Return procedure for AT25080-10PC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT25080-10PC Tags
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