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Microchip Technology AT25010A-10PI-1.8
- Part No.:
- AT25010A-10PI-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT25010A-10PI-1.8.pdf
- Description:
- IC EEPROM 1KBIT SPI 20MHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,748
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Product details
Overview
AT25010A-10PI-1.8 from Microchip Technology (formerly Atmel) is a 1-Kbit SPI serial EEPROM organized as 128 words × 8 bits, supporting 1.8 V to 5.5 V supply operation, 20 MHz clock rate at 5 V, 8-byte page write mode, and hardware/software write protection via WP pin and status register. It serves as nonvolatile configuration storage in microcontroller-based industrial control modules requiring low-voltage reliability.
For engineers reviewing the AT25010A-10PI-1.8 datasheet, AT25010A-10PI-1.8 pinout, AT25010A-10PI-1.8 application, or AT25010A-10PI-1.8 equivalent, this device delivers verified 1.8 V–5.5 V operation, 1 million write cycles, 100-year data retention, automotive-grade temperature range (−40°C to +85°C), and SPI Mode 0/3 compatibility for embedded system boot configuration and calibration data logging.
Technical Context
The AT25010A-10PI-1.8 implements a synchronous SPI slave interface with dedicated SI (input), SO (output), SCK (clock), and CS (chip select) pins, enabling direct connection to 6805/68HC11-family microcontrollers. Its internal architecture includes an 8-bit instruction register, status register with BP1/BP0 block protection bits, and automatic address incrementing during sequential reads.
All programming is self-timed with no external erase cycle required; write enable (WREN) must precede WRITE or WRSR instructions, and the WP pin provides hardware-level inhibition of writes when pulled low. HOLD pin allows suspension of ongoing serial transfers without resetting the sequence, preserving state across master-initiated pauses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8-bit words) - sufficient for firmware version stamps, sensor calibration coefficients, or small parameter sets in space-constrained designs. |
| Supply Voltage Range | 1.8 V to 5.5 V - enables direct integration into 1.8 V logic systems or mixed-voltage boards without level-shifting. |
| Max Clock Frequency | 20 MHz at VCC = 5 V - supports high-throughput configuration loading in real-time systems with tight boot timing budgets. |
| Write Endurance | 1,000,000 cycles - ensures robust field operation in devices requiring frequent parameter updates (e.g., energy meter tariff tables). |
| Data Retention | 100 years at 25°C - guarantees long-term integrity of stored calibration data or security keys over product lifetime. |
| Page Write Size | 8 bytes - minimizes write latency per transaction while avoiding excessive overhead compared to byte-write-only devices. |
| Operating Temperature | −40°C to +85°C - qualified for industrial environments including factory automation controllers and outdoor telemetry units. |
Pinout & Package
AT25010A-10PI-1.8 is supplied in an 8-lead PDIP (0.300" wide, package code 8P3), suitable for through-hole prototyping and legacy industrial PCBs. Pin functions are electrically identical across all AT25010A variants regardless of package.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must be low to accept SPI commands; high-Z SO output when high. |
| SCK | Serial Clock Input | Master-generated clock synchronizing all SI/SO data transfers; supports Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1). |
| SI | Serial Data Input | Receives op-codes, addresses, and write data; MSB-first transmission; ignored during HOLD or when CS is high. |
| SO | Serial Data Output | Drives read data and status register contents; enters high-impedance state when CS is high or during HOLD. |
| GND | Ground Reference | Primary return path for VCC current and logic reference; requires low-impedance connection to minimize noise coupling. |
| VCC | Power Supply | Single-supply input accepting 1.8–5.5 V; decoupling capacitor (0.1 µF) recommended within 10 mm of pin. |
| WP | Write Protect | Hardware lock: pulls low to inhibit all write operations regardless of WREN status or status register settings. |
| HOLD | Communication Suspend | Pauses active SPI transfer without resetting internal state; requires SCK low before assertion and release. |
Key Features
| Feature | Design Value |
|---|---|
| Block Write Protection | Configurable via status register to protect 0%, 25%, 50%, or 100% of memory array - prevents accidental overwrite of critical boot parameters. |
| Self-timed Write Cycle | ≤5 ms max duration with no external timing control needed - simplifies firmware design and eliminates need for polling delays beyond RDSR readiness check. |
| Dual Write Protection | Combines hardware (WP pin) and software (WREN + status register) layers - meets IEC 62443 functional safety requirements for secure parameter storage. |
| SPI Mode Flexibility | Native support for both Mode 0 and Mode 3 - interoperates with diverse MCU platforms including ARM Cortex-M, PIC, and legacy 8-bit controllers. |
| Low Standby Current | 0.1 µA typical at 1.8 V - extends battery life in always-on IoT edge nodes where EEPROM remains powered between wake cycles. |
Applications
| Industrial PLC Configuration Storage | Medical Device Calibration Data |
|---|---|
Use Scenario: Storing I/O mapping tables, PID tuning constants, and alarm thresholds in programmable logic controllers deployed in factory environments. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during cold start and runtime parameter updates via SPI from main MCU. Use Value: Ensures deterministic boot behavior after power loss and supports field recalibration without firmware reflash. |
Use Scenario: Holding sensor offset/gain coefficients and regulatory compliance logs in portable diagnostic equipment operating on coin-cell batteries. IC Role / Device Role / Timing Role: Low-power persistent memory interfaced to ADC controller MCU during device initialization and periodic self-test sequences. Use Value: Maintains traceable calibration history across 10+ years of clinical use while consuming <0.5 µA average current in sleep mode. |
| Automotive Body Control Module | Smart Energy Meter Firmware Metadata |
Use Scenario: Saving seat/mirror position presets, lighting profiles, and fault codes in 12 V automotive body electronics with wide input voltage transients. IC Role / Device Role / Timing Role: SPI-connected EEPROM co-located with LIN/CAN gateway MCU for user preference persistence across ignition cycles. Use Value: Withstands load-dump events up to 6.25 V and operates reliably at −40°C ambient, meeting AEC-Q100 stress test requirements. |
Use Scenario: Storing firmware checksums, upgrade timestamps, and tariff schedule versions in utility-grade electricity meters certified to IEC 62056 standards. IC Role / Device Role / Timing Role: Secure configuration vault accessed only during authenticated firmware update sessions via isolated SPI bus. Use Value: Prevents rollback attacks via write-protected status register and enables cryptographic signature verification of stored metadata. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95128-WMN6TP | 128 Kbit capacity, 5 MHz max clock at 2.5 V, no HOLD pin, standard SO8 package | Higher density but slower interface; lacks suspend capability for multi-master arbitration | Select when >1 Kbit storage is needed and HOLD functionality is unnecessary. |
| BR24G01FJ-WE2 | I²C interface (not SPI), 1.7–5.5 V, 1 MHz max, built-in error correction, TSSOP8 package | Requires I²C bus resources and different driver stack; adds ECC for enhanced reliability in harsh EMI environments | Choose for systems already using I²C infrastructure and demanding bit-error resilience in motor drive proximity. |
Compared with M95128-WMN6TP and BR24G01FJ-WE2, the AT25010A-10PI-1.8 offers optimal balance of SPI compatibility, 1.8 V operation, HOLD functionality, and proven industrial temperature performance-making it preferred for resource-constrained microcontroller designs needing deterministic, low-latency nonvolatile storage.
Availability
AT25010A-10PI-1.8 is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostics equipment, automotive body controllers, and smart energy meters requiring stable component supply across extended product lifecycles.
Supply support for AT25010A-10PI-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 acquired Atmel in 2016 and maintains full technical and manufacturing continuity for the AT25xxx EEPROM family. The company specializes in scalable, low-power semiconductor solutions for embedded control and connectivity.
The AT25010A-10PI-1.8 belongs to Microchip's serial EEPROM product line, engineered for reliable nonvolatile data storage in industrial, automotive, and medical applications where voltage flexibility, long-term data integrity, and SPI interoperability are critical.
FAQ
What is the maximum clock frequency supported by AT25010A-10PI-1.8 at 1.8 V?
The AT25010A-10PI-1.8 supports up to 5 MHz SCK frequency when operated at 1.8 V, as specified in Table 4 AC Characteristics under the 1.8–5.5 V column. This is lower than its 20 MHz rating at 5 V but ensures robust timing margins and signal integrity in low-voltage systems. The device automatically adapts to the applied VCC without configuration changes.
Does AT25010A-10PI-1.8 require an external erase command before writing?
No, AT25010A-10PI-1.8 does not require a separate erase command. All write operations are self-timed and internally manage cell erasure prior to programming. A Write Enable (WREN) instruction must precede any WRITE or WRSR command, and the WP pin must be high during the write sequence. Internal erase is transparent to the host MCU.
How is block write protection configured on AT25010A-10PI-1.8?
Block write protection on AT25010A-10PI-1.8 is set by writing BP1 and BP0 bits in the status register using the WRSR instruction. These nonvolatile bits define four protection levels: none (00), 25% (01), 50% (10), or 100% (11) of the 128-word array. Protection applies to addresses shown in Table 8 and persists across power cycles.
Can AT25010A-10PI-1.8 operate in SPI Mode 3 (CPOL=1, CPHA=1)?
Yes, AT25010A-10PI-1.8 explicitly supports SPI Mode 3 per its datasheet Features section. In Mode 3, the SCK idle state is high and data is sampled on the falling edge. The device accepts both Mode 0 and Mode 3 without hardware modification, allowing seamless integration with MCUs that default to either polarity/phase configuration.
What is the function of the HOLD pin on AT25010A-10PI-1.8?
The HOLD pin on AT25010A-10PI-1.8 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. This enables multi-master arbitration or CPU interrupt handling mid-transfer.
AT25010A-10PI-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:
- 1Kbit
- Memory Organization:
- 128 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
AT25010A-10PI-1.8 FAQ
1.How can I place an order for AT25010A-10PI-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25010A-10PI-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 AT25010A-10PI-1.8 reliable?
The price and inventory of AT25010A-10PI-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 AT25010A-10PI-1.8 is usually 5 days.
3.What payment methods are accepted for AT25010A-10PI-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25010A-10PI-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25010A-10PI-1.8?
AT25010A-10PI-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25010A-10PI-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 AT25010A-10PI-1.8?
For technical support, including AT25010A-10PI-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25010A-10PI-1.8 requirements.
6.How does Aetrix verify that AT25010A-10PI-1.8 is sourced from the original manufacturer or authorized distributors?
All AT25010A-10PI-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 AT25010A-10PI-1.8 meets industry standards.
7.What is the process for return or replacement of AT25010A-10PI-1.8?
All AT25010A-10PI-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT25010A-10PI-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 AT25010A-10PI-1.8 part is unused and in its original packaging.
Return procedure for AT25010A-10PI-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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