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Microchip Technology AT25080B-MAHL-E
- Part No.:
- AT25080B-MAHL-E
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
AT25080B-MAHL-E.pdf
- Description:
- IC EEPROM 8KBIT SPI 20MHZ 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:14,900
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Product details
Overview
AT25080B-MAHL-E from Microchip Technology is an 8 Kbit SPI Serial EEPROM (1,024 × 8) in an 8-lead SOIC package, supporting SPI Modes 0 and 3, operating from 1.8V to 5.5V, with 20 MHz max clock rate at 5V, 32-byte page write capability, and industrial temperature range (−40°C to +85°C). It serves as nonvolatile configuration storage in microcontroller-based embedded systems requiring reliable, low-voltage data retention.
For engineers reviewing the AT25080B-MAHL-E datasheet, AT25080B-MAHL-E pinout, AT25080B-MAHL-E application, or AT25080B-MAHL-E equivalent, key selection considerations include its 1.8V–5.5V supply range, hardware/software write protection via WP pin and STATUS register, 5 ms max self-timed write cycle, 1M endurance, and 100-year data retention - critical for firmware parameter logging, calibration storage, and secure boot configuration.
Technical Context
The AT25080B-MAHL-E implements a synchronous SPI slave interface with fixed MSB-first serial protocol, supporting dual SPI modes (0 and 3) differentiated only by SCK idle polarity; data is latched on rising SCK edge and output on falling edge. Its internal architecture includes a high-voltage generation circuit for EEPROM programming, a STATUS register with nonvolatile BP0/BP1 block protection bits and WPEN control, and a pause operation controller for HOLD functionality.
Write operations require explicit WREN instruction before WRITE or WRSR commands; the STATUS register's Ready/Busy (WIP) bit indicates active internal write cycles, while the Write Enable Latch (WEL) must be set to '1' to permit writes. Block protection can lock 1/4, 1/2, or full memory array, enforced via both hardware (WP pin) and software (STATUS register) mechanisms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbits (1,024 × 8), sufficient for storing bootloader parameters, device IDs, or sensor calibration tables in space-constrained designs. |
| Supply Voltage Range | 1.8V to 5.5V - enables direct interfacing with 1.8V, 3.3V, and 5V microcontrollers without level-shifting. |
| Max Clock Frequency | 20 MHz at 4.5–5.5V - supports high-speed configuration reads during system boot; drops to 10 MHz at 2.5V and 5 MHz at 1.8V for robust low-voltage operation. |
| Page Write Size | 32 bytes - allows efficient burst writes of configuration blocks while minimizing write cycle overhead vs. byte-wise updates. |
| Write Endurance | 1,000,000 cycles - ensures long-term reliability in applications with frequent field-updatable settings (e.g., industrial HMI calibration). |
| Data Retention | 100 years at 55°C - guarantees persistent storage of critical system data across product lifetime without refresh. |
| Operating Temperature | −40°C to +85°C - qualified for industrial environments including factory automation controllers and outdoor metering devices. |
| Write Cycle Time | ≤5 ms maximum - enables deterministic timing for status flag updates or error log commits without blocking host CPU for extended periods. |
Pinout & Package
AT25080B-MAHL-E is housed in an 8-lead SOIC (Small Outline Integrated Circuit) package, measuring 4.9 mm × 3.9 mm × 1.75 mm, with gull-wing leads and RoHS-compliant lead finish. This surface-mount package supports automated PCB assembly and provides mechanical stability in vibration-prone industrial enclosures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select input | Active-low enable signal; must transition high-to-low before instruction transfer; requires pull-up resistor (≤10 kΩ) tied to VCC for robust power-up behavior. |
| SO (Pin 2) | Serial Data Output | Tri-state output delivering MSB-first read data on falling SCK edge; enters high-impedance state when CS is high or HOLD is asserted. |
| WP (Pin 3) | Hardware Write-Protect | Active-low pin that inhibits STATUS register writes when WPEN=1; functional even during HOLD mode; enables board-level write lockdown independent of firmware. |
| GND (Pin 4) | Ground reference | Primary return path for VCC current and logic signals; must be connected to system ground plane with low-inductance routing to minimize noise coupling into SO/SI lines. |
| SI (Pin 5) | Serial Data Input | Receives MSB-first opcodes, addresses, and write data on rising SCK edge; ignored during HOLD or when CS is high. |
| SCK (Pin 6) | Serial Clock input | Asynchronous master-generated clock; defines timing for SI sampling (rising edge) and SO output (falling edge); idle polarity determines SPI Mode 0 (low) or Mode 3 (high). |
| HOLD (Pin 7) | Serial Communication Suspend | Pauses ongoing SPI transfers without resetting sequence; requires assertion during SCK low phase; maintains internal state but does not interrupt active write cycles. |
| VCC (Pin 8) | Power supply | 1.8V–5.5V input powering core logic and EEPROM array; requires local 0.1 µF ceramic decoupling capacitor placed within 5 mm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| Triple-layer write protection | Combines hardware (WP pin), software (STATUS register), and block-level (BP0/BP1 bits) mechanisms to prevent accidental overwrites of critical firmware or calibration data. |
| Page write optimization | 32-byte page buffer reduces average write time per byte by >90% vs. byte-write mode, accelerating bulk configuration updates in real-time systems. |
| Low-power standby | Standby current as low as 0.1 µA at 1.8V enables battery-backed operation in energy-harvesting sensors and portable medical devices. |
| HOLD function with zero-cycle resume | Allows host MCU to temporarily suspend EEPROM communication mid-transfer (e.g., during ISR execution) and resume without re-sending command/address - preserving bus efficiency. |
| Green packaging | Lead-free, halide-free, RoHS-compliant SOIC package meets global environmental compliance requirements without sacrificing thermal or mechanical performance. |
| Power-on reset (POR) circuit | Guarantees device remains in known standby state until VCC stabilizes above 1.5V, eliminating spurious writes during brown-out conditions or uncontrolled power ramp-up. |
Applications
| Industrial PLC Configuration Storage | Medical Device Calibration Memory |
|---|---|
|
Use Scenario: Storing I/O mapping tables, PID tuning parameters, and alarm thresholds in programmable logic controllers deployed in factory environments. IC Role / Device Role / Timing Role: Nonvolatile configuration register providing deterministic boot-time parameter loading with guaranteed 100-year data integrity under −40°C to +85°C thermal cycling. Use Value: Eliminates need for external backup batteries or supercapacitors while ensuring regulatory-compliant traceability of calibration history across device lifecycle. |
Use Scenario: Retaining sensor offset/gain coefficients and patient-specific therapy profiles in portable infusion pumps and diagnostic monitors. IC Role / Device Role / Timing Role: Secure, tamper-resistant memory element with hardware WP pin enabling clinical staff to lock calibration data post-verification. Use Value: Meets IEC 62304 Class C software safety requirements by preventing unauthorized runtime modification of therapeutic parameters. |
| Smart Meter Firmware Parameter Log | Automotive Body Control Module Settings |
|
Use Scenario: Recording utility tariff schedules, demand-response event logs, and meter firmware version stamps in ANSI C12.22-compliant electricity meters. IC Role / Device Role / Timing Role: High-endurance (1M cycles) data logger interfacing directly with 3.3V metrology SoC via SPI, supporting 5 ms write commits during power-fail interrupts. Use Value: Enables seamless firmware field upgrades and audit-trail compliance without requiring additional FRAM or NVSRAM components. |
Use Scenario: Storing seat position presets, mirror angle memories, and lighting configuration profiles in automotive body control units (BCUs). IC Role / Device Role / Timing Role: AEC-Q100 stress-tested EEPROM (via parent family qualification) providing EEPROM-backed user preference storage with fast 20 MHz read access during vehicle startup. Use Value: Delivers <100 ms boot-time recall of driver preferences while meeting ISO 16750-2 vibration and temperature shock requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPI EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95080-DRMN3TP/K | 8 Kbit SPI EEPROM in 8-lead TSSOP; supports same 1.8–5.5V range and 20 MHz speed, but lacks HOLD pin and uses different STATUS register layout (no BP bits). | Best suited for cost-sensitive consumer electronics where suspend functionality is unnecessary and board layout allows TSSOP footprint. | Select M95080-DRMN3TP/K only if HOLD is unused and existing design accommodates TSSOP thermal profile; verify STATUS register compatibility before firmware porting. |
| 25AA080C-I/SN | 8 Kbit SPI EEPROM in 8-lead SOIC; identical pinout and voltage range, but rated for 100 kHz–10 MHz max clock (vs. 20 MHz), and specifies 500k write cycles (vs. 1M). | Ideal for legacy industrial controls with slower MCUs and less frequent configuration updates, where extended endurance is not required. | Choose 25AA080C-I/SN only when system clock constraints limit SCK to ≤10 MHz and 500k endurance suffices; confirm SOIC package marking matches AT25080B-MAHL-E mechanical fit. |
Compared with M95080-DRMN3TP/K and 25AA080C-I/SN, AT25080B-MAHL-E uniquely delivers HOLD functionality, 1M write endurance, and 20 MHz operation in an industry-standard SOIC package - making it optimal for high-reliability, high-throughput embedded systems requiring deterministic suspend/resume and long-term field update capability.
Availability
AT25080B-MAHL-E is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostics equipment, smart utility meters, and automotive body control modules requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.
Supply support for AT25080B-MAHL-E 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 Inc. is a leading provider of microcontroller, analog, FPGA, and memory solutions, headquartered in Chandler, Arizona, with global design, manufacturing, and sales operations.
The AT25080B-MAHL-E belongs to Microchip's AT25xxx SPI Serial EEPROM product line, engineered specifically for robust, low-voltage nonvolatile storage in industrial, medical, and automotive applications demanding high endurance and guaranteed data retention.
FAQ
What is the maximum clock frequency supported by AT25080B-MAHL-E at 3.3V operation?
At 3.3V supply, the AT25080B-MAHL-E supports up to 10 MHz SCK frequency, as specified in the AC Characteristics table (VCC = 2.5V to 5.5V range). This ensures reliable communication with common 3.3V microcontrollers while maintaining timing margins for signal integrity across PCB traces. The AT25080B-MAHL-E datasheet confirms this rating is valid across the full industrial temperature range.
Does AT25080B-MAHL-E support SPI Mode 1 or Mode 2?
No, AT25080B-MAHL-E explicitly supports only SPI Modes 0 and 3, as stated in the Features section and Device Operation chapter. These modes share identical data sampling (rising SCK edge) and output (falling SCK edge) timing, differing solely in SCK idle polarity. Attempting Mode 1 or 2 will result in misaligned data transfers and corrupted reads/writes. The AT25080B-MAHL-E requires matching SCK idle state before and after CS assertion.
How does the HOLD pin behave during an active internal write cycle in AT25080B-MAHL-E?
The HOLD pin has no effect on an ongoing internal write cycle in AT25080B-MAHL-E; the device continues programming the EEPROM array to completion even if HOLD is asserted. HOLD only suspends serial communication (SI/SO/SCK interaction) - it does not pause or abort the self-timed 5 ms write operation. This ensures data integrity during host MCU interruptions without risking partial writes. The AT25080B-MAHL-E STATUS register WIP bit remains '1' until the internal cycle finishes.
Can AT25080B-MAHL-E be used in a 1.8V-only system without level shifters?
Yes, AT25080B-MAHL-E is fully specified for 1.8V operation, including DC characteristics (e.g., VIH/VIL thresholds), AC timing (5 MHz max SCK), and functionality (all instructions, HOLD, WP). Its 1.8V–5.5V supply range eliminates need for level shifters when interfacing with 1.8V microcontrollers or FPGAs. The AT25080B-MAHL-E datasheet validates all features across this entire voltage range under industrial temperature conditions.
What is the default state of the STATUS register after power-up in AT25080B-MAHL-E?
Upon power-up, AT25080B-MAHL-E initializes with WEL = 0 (Write Enable Latch disabled), WIP = 0 (Ready/Busy clear), and nonvolatile bits (WPEN, BP0, BP1) retaining their last written values. The EEPROM array ships with all FFh data. This ensures no accidental writes occur at startup, and system firmware must issue WREN before any WRITE or WRSR command. The AT25080B-MAHL-E device defaults to Standby mode with CS inactive.
AT25080B-MAHL-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-UFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 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-UDFN (2x3)
AT25080B-MAHL-E FAQ
1.How can I place an order for AT25080B-MAHL-E through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25080B-MAHL-E 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 AT25080B-MAHL-E reliable?
The price and inventory of AT25080B-MAHL-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25080B-MAHL-E is usually 5 days.
3.What payment methods are accepted for AT25080B-MAHL-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25080B-MAHL-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25080B-MAHL-E?
AT25080B-MAHL-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25080B-MAHL-E 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 AT25080B-MAHL-E?
For technical support, including AT25080B-MAHL-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25080B-MAHL-E requirements.
6.How does Aetrix verify that AT25080B-MAHL-E is sourced from the original manufacturer or authorized distributors?
All AT25080B-MAHL-E 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 AT25080B-MAHL-E meets industry standards.
7.What is the process for return or replacement of AT25080B-MAHL-E?
All AT25080B-MAHL-E units undergo pre-shipment inspection (PSI). If there is an issue with AT25080B-MAHL-E, 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 AT25080B-MAHL-E part is unused and in its original packaging.
Return procedure for AT25080B-MAHL-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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