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Microchip Technology AT25010B-SSPD-T
- Part No.:
- AT25010B-SSPD-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT25010B-SSPD-T.pdf
- Description:
- IC EEPROM 1KBIT SPI 5MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,020
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Product details
Overview
AT25010B-SSPD-T from Microchip Technology is a 1 Kbit (128 × 8) SPI serial EEPROM with automotive AEC-Q100 Grade 1 qualification, operating from 2.5V to 5.5V over -40°C to +125°C, supporting 5 MHz clock rate and 8-byte page write for embedded control storage in engine control units, ADAS sensors, and body electronics.
For engineers reviewing the AT25010B-SSPD-T datasheet, AT25010B-SSPD-T pinout, AT25010B-SSPD-T application, or AT25010B-SSPD-T equivalent, this page delivers verified electrical specs, SPI timing constraints, hardware/software write protection behavior, and automotive-grade reliability metrics - all confirmed against DS20006285B.
Technical Context
The AT25010B-SSPD-T implements a synchronous SPI slave interface compliant with Modes 0 and 3, latching input on SCK rising edge and driving output on falling edge. It integrates nonvolatile STATUS register control for block write protection (BP1/BP0), write-enable latch (WEL), and ready/busy status (RDY/BSY).
Its architecture includes high-voltage generation for EEPROM programming, power-on reset (POR) circuitry requiring ≥100 µs stabilization before first command, and dual-level write protection via dedicated WP pin and software-controlled STATUS register bits - enabling selective 1/4, 1/2, or full array lock.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 1,024 bits (128 words × 8 bits); sufficient for calibration data, fault logs, and configuration registers in ECUs |
| Supply voltage range | 2.5V–5.5V (Grade 1); supports direct connection to 3.3V or 5V automotive microcontroller I/O rails without level shifting |
| Max clock frequency | 5 MHz at VCC = 5V; enables ≤200 ns per bit transfer, reducing firmware overhead in time-critical boot sequences |
| Write endurance | 1,000,000 cycles; ensures >10 years of daily reprogramming in telematics firmware update logging |
| Data retention | 100 years at 55°C; guarantees integrity of safety-critical calibration parameters across vehicle lifetime |
| ESD protection | >4 kV HBM; meets ISO 10605 requirements for in-vehicle module assembly and handling |
| Operating temperature | -40°C to +125°C (AEC-Q100 Grade 1); qualified for under-hood placement in engine management systems |
Pinout & Package
AT25010B-SSPD-T is supplied in an 8-lead SOIC package (3.9 mm × 4.9 mm, 1.27 mm pitch), with lead-free, RoHS-compliant finish and green halide-free construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; must transition high→low before SCK to initiate SPI frame; requires pull-up ≤10 kΩ for robust power-up behavior |
| SO | Serial Data Output | Tri-state open-drain output; drives MSb-first read data on SCK falling edge; enters high-Z when CS high or HOLD asserted |
| WP | Write-Protect | Hardware lock: low disables all writes (including STATUS register); overrides software WREN if asserted mid-cycle |
| GND | Ground reference | System return path for VCC and all I/O; must be low-impedance connection to minimize noise coupling into EEPROM reads |
| SI | Serial Data Input | MSb-first instruction/address/data input; sampled on SCK rising edge; ignored during HOLD or CS high |
| SCK | Serial Clock | Master-generated clock; defines SPI Mode 0 (idle low) or Mode 3 (idle high); timing requires tWH/tWL ≥40 ns |
| HOLD | Suspend Serial Input | Pauses ongoing SPI transfer without resetting state; requires SCK low to assert/deassert; no effect on active write cycle |
| VCC | Power supply | 2.5V–5.5V input; must ramp monotonically at ≤0.1 V/µs; POR threshold is 1.5V; tPUP = 100 µs required before first command |
Key Features
| Feature | Design Value |
|---|---|
| Automotive AEC-Q100 Grade 1 qualification | Validated for -40°C to +125°C operation with full temperature cycling, HTOL, and ESD testing - required for powertrain and chassis modules |
| Hardware + software write protection | WP pin provides immediate physical lockout; BP1/BP0 bits allow configurable 25%/50%/100% array protection without external logic |
| 8-byte page write mode | Reduces average write time vs. byte-by-byte: 128-byte array written in ≤16 page cycles (vs. 128 individual commands), improving firmware efficiency |
| Self-timed write cycle ≤5 ms | Eliminates need for fixed delay loops; RDY/BSY bit allows polling-based synchronization, freeing CPU during programming |
| Green RoHS/halide-free packaging | Meets automotive ELV Directive and JIGS-001 requirements; UDFN/SOIC/TSSOP variants share identical footprint-compatible pinout |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Storing real-time fuel trim corrections, knock sensor adaptation values, and diagnostic trouble codes (DTCs) across ignition cycles. IC Role / Device Role / Timing Role: Nonvolatile configuration storage interfaced directly to MCU SPI port; accessed during boot and runtime via polled RDSR/READ sequences. Use Value: 100-year data retention ensures DTC history remains intact over 15+ year vehicle service life; Grade 1 temp rating withstands under-hood thermal stress. |
Use Scenario: Holding camera calibration offsets, radar beamforming coefficients, and sensor fusion metadata in front-facing camera modules. IC Role / Device Role / Timing Role: SPI-configurable parameter store synchronized with MCU boot sequence; write-protected via WP pin during normal operation. Use Value: 1M endurance supports daily OTA updates; 5 MHz interface enables fast coefficient loading during camera initialization (<50 ms). |
| Body Control Module (BCM) | Electric Power Steering (EPS) |
Use Scenario: Retaining user preferences (window position, mirror angle, seat memory) and door lock actuation counters in centralized body electronics. IC Role / Device Role / Timing Role: Low-power SPI EEPROM accessed intermittently via microcontroller GPIO-triggered wake-up; standby current <2 µA at 5V. Use Value: 2.5V min VCC allows direct interface with 3.3V BCM power rail; block protection prevents accidental overwrite of critical seat position maps. |
Use Scenario: Logging motor phase current samples, torque sensor zero-point drift compensation, and fault event timestamps for EPS motor control. IC Role / Device Role / Timing Role: High-reliability data logger co-located with EPS MCU; write operations triggered only during safe states (motor stopped, ignition on). Use Value: WP pin hardwired low during steering maneuvers prevents corruption; 125°C rating survives proximity to motor heat sink. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95128-DFMN6TP | 128 Kbit capacity, 20 MHz max clock, 1.8V–5.5V supply; no HOLD pin; different STATUS register layout | Higher density for multi-parameter logging; lacks suspend capability for interrupt-driven SPI arbitration | Select when >1 Kbit storage is needed and HOLD functionality is unused; verify STATUS register compatibility in firmware |
| BR24G01FJ-3GE2 | I²C interface (not SPI), 1 Kbit, 1.7V–5.5V, -40°C to +105°C; no WP/HOLD pins; uses ACK/NACK protocol | Requires I²C master instead of SPI; limited to cabin-temperature zones (no Grade 1 qualification) | Choose only for cost-sensitive interior modules where SPI bus is unavailable and 125°C operation is unnecessary |
Compared with M95128-DFMN6TP and BR24G01FJ-3GE2, the AT25010B-SSPD-T uniquely combines AEC-Q100 Grade 1 qualification, SPI HOLD functionality for deterministic bus arbitration, and hardware WP pin - making it the only option qualified for under-hood, safety-critical, interrupt-aware EEPROM use cases.
Availability
AT25010B-SSPD-T is available at Aetrix Electronics and suitable for engine control units, ADAS camera modules, and electric power steering systems requiring stable component supply with automotive-grade traceability and long-term lifecycle support.
Supply support for AT25010B-SSPD-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 is a global semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with core expertise in automotive, industrial, and communications markets.
The AT25010B-SSPD-T belongs to Microchip's automotive-qualified serial EEPROM product line, engineered specifically for reliable nonvolatile data storage in harsh-temperature, safety-critical electronic control modules.
FAQ
What is the maximum clock frequency supported by AT25010B-SSPD-T at 3.3V supply?
The AT25010B-SSPD-T supports up to 5 MHz clock frequency at VCC = 5.0V. At 3.3V, the maximum guaranteed clock rate is not explicitly specified in DS20006285B; however, AC characteristics tables apply across the full 2.5V–5.5V Grade 1 range, and typical operation at 3.3V achieves 5 MHz in validated automotive designs. For production use at 3.3V, confirm timing margins using tWH/tWL ≥40 ns and tSU/tH per Table 4-3.
Does AT25010B-SSPD-T support SPI Mode 1 or Mode 2?
No, AT25010B-SSPD-T supports only SPI Modes 0 (CPOL = 0, CPHA = 0) and 3 (CPOL = 1, CPHA = 1), as confirmed in Section 1 Features and Section 5.1 of DS20006285B. It does not support Mode 1 (CPOL = 0, CPHA = 1) or Mode 2 (CPOL = 1, CPHA = 0), because data sampling is fixed to rising-edge input and falling-edge output regardless of idle polarity.
How does the HOLD pin behave during an active internal write cycle in AT25010B-SSPD-T?
The HOLD pin has no effect on an ongoing internal write cycle in AT25010B-SSPD-T. As stated in Section 5.3, "the Hold mode does not have an effect on the internal write cycle… if a write cycle is in progress, asserting the HOLD pin will not pause the operation." HOLD only suspends SPI communication - SI/SCK are ignored and SO goes high-Z - but the EEPROM cell programming continues to completion in background.
What is the factory default state of the STATUS register in AT25010B-SSPD-T?
Per Section 4.6.6 of DS20006285B, AT25010B-SSPD-T ships with the STATUS register set so that BP1/BP0 = 00 (no array protection), WEL = 0 (write disabled), and RDY/BSY = 0 (ready). The EEPROM array itself is pre-programmed to all 0xFFh (logic '1') data. This default enables immediate read access and requires explicit WREN + WRSR to configure protection before first write.
Is AT25010B-SSPD-T pin-compatible with AT25020B-SSPD-T or AT25040B-SSPD-T?
Yes, AT25010B-SSPD-T shares identical 8-lead SOIC pinout, electrical interface, and command set with AT25020B-SSPD-T and AT25040B-SSPD-T, as confirmed in Tables 2-1 and 6-1 of DS20006285B. The only difference is memory density (1K/2K/4K), meaning PCB layout and firmware can be reused across the family - though address space and page boundaries differ.
AT25010B-SSPD-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:
- Active
- 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:
- 5 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- -
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT25010B-SSPD-T FAQ
1.How can I place an order for AT25010B-SSPD-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25010B-SSPD-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 AT25010B-SSPD-T reliable?
The price and inventory of AT25010B-SSPD-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25010B-SSPD-T is usually 5 days.
3.What payment methods are accepted for AT25010B-SSPD-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25010B-SSPD-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25010B-SSPD-T?
AT25010B-SSPD-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25010B-SSPD-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 AT25010B-SSPD-T?
For technical support, including AT25010B-SSPD-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25010B-SSPD-T requirements.
6.How does Aetrix verify that AT25010B-SSPD-T is sourced from the original manufacturer or authorized distributors?
All AT25010B-SSPD-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 AT25010B-SSPD-T meets industry standards.
7.What is the process for return or replacement of AT25010B-SSPD-T?
All AT25010B-SSPD-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25010B-SSPD-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 AT25010B-SSPD-T part is unused and in its original packaging.
Return procedure for AT25010B-SSPD-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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