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Microchip Technology AT25010A-10TU-2.7-T
- Part No.:
- AT25010A-10TU-2.7-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT25010A-10TU-2.7-T.pdf
- Description:
- IC EEPROM 1KBIT SPI 20MHZ 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,887
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Product details
Overview
AT25010A-10TU-2.7-T from Microchip Technology (formerly Atmel) is a 1-Kbit SPI serial EEPROM organized as 128 words × 8 bits, operating from 2.7V to 5.5V with 20 MHz max clock rate at 5V, 8-byte page write capability, and hardware/software write protection via WP pin and status register. It serves as nonvolatile configuration storage in microcontroller-based industrial control modules.
For engineers reviewing the AT25010A-10TU-2.7-T datasheet, AT25010A-10TU-2.7-T pinout, AT25010A-10TU-2.7-T application, or AT25010A-10TU-2.7-T equivalent, key selection criteria include VCC range compatibility (2.7–5.5V), TSSOP-8 package footprint, SPI Mode 0/3 support, block write protection granularity (1/4, 1/2, full array), and 1 million write cycle endurance.
Technical Context
The AT25010A-10TU-2.7-T implements a synchronous SPI slave interface with dedicated SI/SO pins, CS-controlled selection, and HOLD pin for pausing serial transfers without resetting sequence state. Its internal architecture includes an 8-bit instruction register, status register with BP1/BP0 for nonvolatile block protection, and automatic address increment during multi-byte reads.
Write operations require explicit WREN instruction followed by WRITE command; self-timed internal write cycles complete in ≤5 ms with RDY bit polling via RDSR. Block protection levels are set via WRSR and persist across power cycles, while WP pin provides hardware-level inhibition of all writes when asserted low.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8), sufficient for firmware revision IDs, calibration coefficients, or small device configuration tables |
| VCC Range | 2.7V to 5.5V - supports direct interfacing with 3.3V and 5V microcontrollers without level shifting |
| Max Clock Rate | 20 MHz at 5V - enables fast parameter updates in real-time systems with tight timing budgets |
| Write Endurance | 1 million cycles - ensures reliable field recalibration or logging over product lifetime |
| Data Retention | 100 years - guarantees long-term storage integrity for infrequently updated settings |
| Page Write Size | 8 bytes - optimizes burst programming efficiency while limiting write latency per operation |
| Operating Temp | −40°C to +85°C - qualified for industrial ambient environments including factory automation and metering |
Pinout & Package
AT25010A-10TU-2.7-T is housed in an 8-lead Thin Shrink Small Outline Package (TSSOP), 0.170" wide body, RoHS-compliant and lead-free ("U" suffix), with standard JEDEC MO-153 footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must be low to accept instructions and data on SI, and drive SO |
| SCK | Serial Clock | Input-only master-generated clock; defines timing for SI sampling and SO output edges |
| SI | Serial Data Input | Receives op-codes, addresses, and write data MSB-first; ignored when CS is high or HOLD is active |
| SO | Serial Data Output | Drives read data MSB-first; enters high-impedance state when CS is high or during HOLD |
| GND | Ground Reference | Primary return path for VCC and I/O signals; requires low-impedance PCB connection |
| VCC | Power Supply | Single 2.7–5.5V supply; powers core logic and I/O buffers; decoupling capacitor required |
| WP | Write Protect | Hardware lock: low = all write instructions ignored; overrides software WREN/WRSR state |
| HOLD | Communication Suspend | Pauses ongoing SPI transfer (e.g., mid-read/write) without losing byte count or address pointer |
Key Features
| Feature | Design Value |
|---|---|
| SPI Mode 0 & 3 Support | Interoperates with diverse MCUs including 68HC11, PIC, and ARM Cortex-M families without protocol translation |
| Block Write Protection | Four protection levels (none, 1/4, 1/2, full array) configured via nonvolatile BP1/BP0 bits in status register |
| Hardware + Software Write Lock | Simultaneous use of WP pin (instant hardware disable) and WREN/WRDI (software-controlled latch) |
| Self-timed Write Cycle | No external erase step needed; internal timing eliminates host MCU wait-state management |
| HOLD Pin Functionality | Enables time-critical interrupt handling by suspending SPI traffic without aborting or reinitializing sequence |
Applications
| Industrial Sensor Node | Smart Energy Meter |
|---|---|
|
Use Scenario: Storing calibrated sensor offsets and temperature compensation coefficients in battery-powered wireless nodes. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed infrequently during startup or field recalibration. Use Value: 100-year data retention ensures calibration persistence across 10+ year deployments without maintenance. |
Use Scenario: Holding tariff schedules, billing counters, and tamper-event logs in DIN-rail mounted electricity meters. IC Role / Device Role / Timing Role: Secure parameter storage with hardware WP pin preventing unauthorized firmware or tariff changes. Use Value: Block write protection (BP1/BP0) allows independent locking of tariff tables vs. usage counters. |
| PLC I/O Module | Medical Diagnostic Device |
|
Use Scenario: Saving channel-specific gain/offset settings and module identification in modular programmable logic controllers. IC Role / Device Role / Timing Role: SPI-configurable memory enabling plug-and-play I/O module replacement without host reprogramming. Use Value: 20 MHz clock rate permits rapid configuration loading during hot-swap initialization sequences. |
Use Scenario: Storing FDA-mandated audit trails, calibration history, and user-defined test protocols in portable analyzers. IC Role / Device Role / Timing Role: Tamper-evident nonvolatile log storage with write protection enforced during normal operation. Use Value: 1 million write cycles support daily calibration logging over 27 years at one entry per day. |
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, same TSSOP-8 package, 5V-only (4.5–5.5V) operation, no 2.7V support | Higher density for extended configuration sets; unsuitable where 2.7–3.6V operation is required | Select when >1 Kbit storage is needed and system VCC is stable ≥4.5V |
| BR24G01FJ-WE2 | 1 Kbit, same 2.7–5.5V range, but uses I²C interface (not SPI), 8-lead SOP package (not TSSOP) | Requires I²C host controller and different PCB layout; lacks HOLD pin and SPI Mode 3 support | Select only if host design already uses I²C bus and board space permits SOP footprint |
Compared with M95128-WMN6TP and BR24G01FJ-WE2, the AT25010A-10TU-2.7-T uniquely balances 2.7V compatibility, SPI flexibility (Modes 0/3), TSSOP-8 footprint, and hardware/software write protection-making it optimal for cost-sensitive industrial MCU peripherals requiring robust, low-voltage nonvolatile storage.
Availability
AT25010A-10TU-2.7-T is available at Aetrix Electronics and suitable for industrial control systems, smart metering infrastructure, and medical diagnostic equipment requiring stable component supply and long-term manufacturability.
Supply support for AT25010A-10TU-2.7-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 support for legacy Atmel serial EEPROMs, delivering high-reliability nonvolatile memory solutions for industrial and automotive markets.
The AT25010A-10TU-2.7-T belongs to Microchip's legacy AT25xxx SPI EEPROM family, designed specifically for low-power, low-voltage embedded systems needing trusted, pin-compatible serial memory with flexible write protection.
FAQ
What voltage range does the AT25010A-10TU-2.7-T support?
The AT25010A-10TU-2.7-T operates from 2.7V to 5.5V, making it compatible with both 3.3V and 5V microcontroller systems. This dual-voltage capability eliminates the need for level shifters in mixed-supply designs and ensures reliable operation across industrial input tolerances. The "-2.7" in the part number explicitly denotes this 2.7V minimum rating.
Does the AT25010A-10TU-2.7-T support SPI Mode 3 (CPOL=1, CPHA=1)?
Yes, the AT25010A-10TU-2.7-T explicitly supports both SPI Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1), as confirmed in its official datasheet. This dual-mode compatibility enables seamless integration with a broader range of host processors-including legacy 68HC11 derivatives and modern ARM-based SoCs-without requiring firmware-level clock polarity or phase adjustments.
How is write protection implemented on the AT25010A-10TU-2.7-T?
The AT25010A-10TU-2.7-T implements layered write protection: hardware via the WP pin (low = immediate write disable), and software via the status register's BP1/BP0 bits (configurable 1/4, 1/2, or full array lock). Both mechanisms operate independently-the WP pin overrides software settings, ensuring failsafe protection even if firmware is compromised.
What is the maximum clock frequency for the AT25010A-10TU-2.7-T at 3.3V?
At 3.3V, the AT25010A-10TU-2.7-T supports up to 10 MHz SCK frequency, as specified in Table 4 of its datasheet under the 2.7–5.5V voltage column. This allows high-speed configuration loading in 3.3V systems while maintaining timing margin for noise immunity and signal integrity across PCB traces.
Is the AT25010A-10TU-2.7-T pin-compatible with other AT25xxx variants in TSSOP-8?
Yes, the AT25010A-10TU-2.7-T shares identical pinout and TSSOP-8 package dimensions (8A2) with AT25020A-10TU-2.7-T and AT25040A-10TU-2.7-T. This enables drop-in capacity upgrades-e.g., replacing the 1-Kbit AT25010A-10TU-2.7-T with a 2-Kbit or 4-Kbit variant-without PCB redesign, provided firmware handles the larger address space.
AT25010A-10TU-2.7-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
AT25010A-10TU-2.7-T FAQ
1.How can I place an order for AT25010A-10TU-2.7-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25010A-10TU-2.7-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 AT25010A-10TU-2.7-T reliable?
The price and inventory of AT25010A-10TU-2.7-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25010A-10TU-2.7-T is usually 5 days.
3.What payment methods are accepted for AT25010A-10TU-2.7-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25010A-10TU-2.7-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25010A-10TU-2.7-T?
AT25010A-10TU-2.7-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25010A-10TU-2.7-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 AT25010A-10TU-2.7-T?
For technical support, including AT25010A-10TU-2.7-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25010A-10TU-2.7-T requirements.
6.How does Aetrix verify that AT25010A-10TU-2.7-T is sourced from the original manufacturer or authorized distributors?
All AT25010A-10TU-2.7-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 AT25010A-10TU-2.7-T meets industry standards.
7.What is the process for return or replacement of AT25010A-10TU-2.7-T?
All AT25010A-10TU-2.7-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25010A-10TU-2.7-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 AT25010A-10TU-2.7-T part is unused and in its original packaging.
Return procedure for AT25010A-10TU-2.7-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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