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Microchip Technology AT25080BN-SH-T
- Part No.:
- AT25080BN-SH-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT25080BN-SH-T.pdf
- Description:
- IC EEPROM 8KBIT SPI 20MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,729
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Product details
Overview
AT25080BN-SH-T from Microchip Technology (formerly Atmel) is an 8-Kbit SPI serial EEPROM organized as 1024 × 8-bit memory, operating from 1.8 V to 5.5 V with a maximum 20 MHz clock rate at 5 V, 32-byte page write capability, and hardware/software write protection via WP pin and status register. It serves as nonvolatile configuration storage in industrial controllers, sensor nodes, and power management ICs.
For engineers reviewing the AT25080BN-SH-T datasheet, AT25080BN-SH-T pinout, AT25080BN-SH-T application, or AT25080BN-SH-T equivalent, this page delivers verified electrical specs, JEDEC SOIC-8 package mapping, SPI Mode 0/3 timing compliance, block protection granularity (1/4, 1/2, full array), and real-world endurance (1 million cycles, 100-year retention).
Technical Context
The AT25080BN-SH-T implements a synchronous slave SPI interface with separate SI/SO lines, fixed MSB-first data framing, and op-code–driven command execution (WREN, WRITE, RDSR, WRSR). It requires explicit write-enable latching before programming and supports HOLD pin–based communication suspension without sequence reset.
Its internal architecture includes a nonvolatile status register with BP0/BP1 block protection bits and WPEN control, enabling selective hardware write lock on memory segments. All write cycles are self-timed (≤5 ms), eliminating external erase steps and supporting page-mode writes across contiguous 32-byte boundaries.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8192 bits (1024 words × 8 bits); sufficient for firmware parameter tables, calibration data, or device ID storage in space-constrained designs. |
| Supply Voltage Range | 1.8 V to 5.5 V; enables direct integration with 1.8 V logic, 3.3 V microcontrollers, and legacy 5 V systems without level-shifting. |
| Max Clock Frequency | 20 MHz at VCC = 5.0 V; supports high-throughput configuration loading in real-time embedded applications. |
| Write Endurance | 1 million write cycles; ensures reliable field updates over product lifetime in telemetry or logging use cases. |
| Data Retention | 100 years at +25°C; guarantees long-term integrity of stored calibration coefficients or security keys without refresh. |
| Page Write Size | 32 bytes per page; minimizes write latency versus byte-write EEPROMs and aligns with common MCU DMA buffer sizes. |
| Operating Temperature | −40°C to +85°C; qualified for industrial-grade deployment in motor drives, PLC modules, and outdoor IoT gateways. |
Pinout & Package
AT25080BN-SH-T is packaged in an 8-lead JEDEC SOIC (package code 8S1), 3.9 mm × 4.9 mm body, 1.27 mm lead pitch, NiPdAu lead finish - compatible with standard reflow profiles and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; must be low to accept commands; high-impedance SO output when deasserted. |
| SCK | Serial Clock | Master-generated clock input; defines timing for SI sampling and SO output transitions per SPI Mode 0/3. |
| SI | Serial Data Input | Command/address/data input path; MSB-first, sampled on SCK rising edge (Mode 0) or falling edge (Mode 3). |
| SO | Serial Data Output | Read data output; tri-stated when CS is high or during HOLD assertion; driven only during valid read sequences. |
| GND | Ground Reference | Return path for VCC and all I/O; requires low-impedance PCB connection to minimize noise coupling into SPI signals. |
| VCC | Power Supply | Single supply input (1.8–5.5 V); decoupling capacitor (0.1 µF ceramic) required within 5 mm of pin for stable operation. |
| WP | Write Protect | Hardware lock for status register; active-low when WPEN = 1; prevents accidental writes to BP0/BP1/WPEN bits. |
| HOLD | Communication Suspend | Pauses ongoing SPI transfer without resetting address counter; requires SCK low during assertion/deassertion. |
Key Features
| Feature | Design Value |
|---|---|
| SPI Mode 0 & 3 Compatibility | Supports both clock polarity/phase variants, enabling interoperability with diverse MCUs including 68HC11, ARM Cortex-M, and PIC families. |
| Block Write Protection | Four configurable protection levels (none, 1/4, 1/2, full array) via nonvolatile BP0/BP1 bits - prevents corruption of critical boot or calibration sectors. |
| Hardware + Software Write Protection | Combines WP pin control (hardware) with WRSR instruction (software), allowing layered security for factory programming vs. field updates. |
| Self-Timed Write Cycle | No external erase pulse needed; internal timing completes ≤5 ms, simplifying firmware design and reducing host CPU overhead. |
| Low Standby Current | ≤6.0 µA at 1.8 V (ISB1); extends battery life in always-on sensor nodes or energy-harvesting devices. |
Applications
| Industrial PLC Configuration Storage | Medical Device Calibration Data |
|---|---|
Use Scenario: Storing I/O mapping, PID tuning parameters, and alarm thresholds in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed via SPI during boot and runtime reconfiguration; operates at 10 MHz under 3.3 V supply. Use Value: Enables field-upgradable logic configurations without requiring external programming hardware or system downtime. |
Use Scenario: Retaining sensor offset/gain coefficients and patient-specific therapy settings in portable infusion pumps and diagnostic monitors. IC Role / Device Role / Timing Role: Secure, tamper-resistant memory for FDA-critical calibration data; WP pin tied low during production to prevent runtime modification. Use Value: Meets IEC 62304 software safety requirements by isolating immutable calibration values from application firmware. |
| Smart Energy Meter Firmware Parameters | Automotive Body Control Module Settings |
Use Scenario: Holding tariff schedules, metering constants, and communication protocol keys in ANSI C12.19-compliant electricity meters. IC Role / Device Role / Timing Role: SPI EEPROM interfaced to an ARM-based metrology SoC; withstands −40°C to +85°C ambient per ANSI C12.20. Use Value: Guarantees 100-year data retention for revenue-grade metering data, satisfying utility regulatory audit requirements. |
Use Scenario: Storing seat position memory, mirror angle presets, and lighting profiles in automotive BCMs for premium vehicle trims. IC Role / Device Role / Timing Role: Low-voltage (1.8 V) serial EEPROM integrated into CAN/LIN gateway subsystem; accessed during ignition-on initialization. Use Value: Supports AEC-Q100 Grade 2 temperature compliance and eliminates mechanical potentiometers, improving long-term reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95080-DRMN6TP/K | STMicroelectronics 8-Kbit SPI EEPROM; identical 1.8–5.5 V range and 20 MHz max clock, but uses different status register bit layout (SRWD instead of WPEN) and lacks HOLD pin. | Requires firmware adaptation for status register access and no suspend capability during SPI transfers. | Select when HOLD functionality is unused and ST's qualification pedigree (AEC-Q100 Grade 1) is prioritized over pin compatibility. |
| BR24G08NUX-10 | Rohm 8-Kbit SPI EEPROM; supports 1.6–5.5 V, 10 MHz max clock at 1.8 V, and offers built-in error correction (ECC), but no hardware WP pin - protection relies solely on software WRSR. | Lower speed limits throughput in high-bandwidth parameter loading; ECC adds robustness in noisy automotive environments. | Prefer for safety-critical automotive applications where single-bit error correction outweighs speed and hardware write lock requirements. |
Compared with M95080-DRMN6TP/K and BR24G08NUX-10, the AT25080BN-SH-T uniquely combines HOLD pin support, hardware WP pin with configurable WPEN, and full 20 MHz operation down to 1.8 V - making it optimal for industrial systems requiring robust, high-speed, suspend-capable configuration storage.
Availability
AT25080BN-SH-T is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostics equipment, smart energy meters, and automotive body control modules requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for AT25080BN-SH-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 acquired Atmel in 2016 and maintains full product support, qualification, and manufacturing continuity for the AT25xxx series.
The AT25080BN-SH-T belongs to Microchip's serial EEPROM product line, engineered for low-power, high-reliability nonvolatile storage in industrial, medical, and automotive applications demanding extended data retention and robust SPI interoperability.
FAQ
What is the maximum clock frequency supported by the AT25080BN-SH-T at 1.8 V?
The AT25080BN-SH-T supports up to 10 MHz at 1.8 V, as specified in Table 0-4 AC Characteristics for the 1.8–5.5 V voltage range. This allows reliable high-speed communication with ultra-low-power microcontrollers while maintaining signal integrity and timing margins under minimum supply conditions.
Does the AT25080BN-SH-T require an external erase cycle before writing new data?
No, the AT25080BN-SH-T does not require a separate erase cycle. All write operations - including byte and page writes - are self-timed and internally managed. The device automatically handles erase-before-write sequencing, completing each write in ≤5 ms without host intervention or additional command overhead.
How is block write protection configured on the AT25080BN-SH-T?
Block write protection on the AT25080BN-SH-T is configured using the WRSR instruction to set BP0 and BP1 bits in the status register. These nonvolatile bits define four protection levels: none (00), 1/4 array (01), 1/2 array (10), or full array (11), corresponding to address ranges 0300–03FFh, 0200–03FFh, or 0000–03FFh respectively.
Can the AT25080BN-SH-T operate in SPI Mode 1 or Mode 2?
No, the AT25080BN-SH-T explicitly supports only SPI Modes 0 (CPOL = 0, CPHA = 0) and 3 (CPOL = 1, CPHA = 1), as stated in the Features section. Attempting Mode 1 or Mode 2 will result in incorrect data sampling due to mismatched clock polarity and phase expectations.
What is the function of the HOLD pin on the AT25080BN-SH-T?
The HOLD pin on the AT25080BN-SH-T suspends ongoing SPI communication without resetting the internal address counter or command state. When asserted low while SCK is low, it places SO in high-impedance and ignores SI inputs; resuming requires bringing HOLD high while SCK remains low - preserving transfer context for deterministic multi-master arbitration.
AT25080BN-SH-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:
- 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-SOIC
AT25080BN-SH-T FAQ
1.How can I place an order for AT25080BN-SH-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25080BN-SH-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 AT25080BN-SH-T reliable?
The price and inventory of AT25080BN-SH-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25080BN-SH-T is usually 5 days.
3.What payment methods are accepted for AT25080BN-SH-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25080BN-SH-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25080BN-SH-T?
AT25080BN-SH-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25080BN-SH-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 AT25080BN-SH-T?
For technical support, including AT25080BN-SH-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25080BN-SH-T requirements.
6.How does Aetrix verify that AT25080BN-SH-T is sourced from the original manufacturer or authorized distributors?
All AT25080BN-SH-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 AT25080BN-SH-T meets industry standards.
7.What is the process for return or replacement of AT25080BN-SH-T?
All AT25080BN-SH-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25080BN-SH-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 AT25080BN-SH-T part is unused and in its original packaging.
Return procedure for AT25080BN-SH-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT25080BN-SH-T Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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93LC46BT-I/OT
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