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Microchip Technology AT25010A-10PU-2.7
- Part No.:
- AT25010A-10PU-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT25010A-10PU-2.7.pdf
- Description:
- IC EEPROM 1KBIT SPI 20MHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,920
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Product details
Overview
AT25010A-10PU-2.7 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. It serves as nonvolatile configuration storage in microcontroller-based industrial control modules where low-voltage operation and pin-constrained board space are critical.
For engineers reviewing the AT25010A-10PU-2.7 datasheet, AT25010A-10PU-2.7 pinout, AT25010A-10PU-2.7 application, or AT25010A-10PU-2.7 equivalent, key selection factors include its 2.7–5.5 V supply range, 8-lead PDIP package with verified CS/SCK/SI/SO/WP/HOLD/GND/VCC pinout, 1 million write cycles endurance, and block-level write protection covering 1/4, 1/2, or full memory array.
Technical Context
The AT25010A-10PU-2.7 implements a synchronous SPI slave interface compliant with Modes 0 and 3, using separate SI (input) and SO (output) pins for full-duplex data transfer. Its internal architecture includes an 8-bit instruction register, status register with BP1/BP0 block protection bits, and automatic address incrementing during page writes.
Write operations require explicit WREN instruction before WRITE, and are inhibited when WP is low or the status register's WEN bit is cleared. The HOLD pin suspends ongoing serial communication without resetting the sequence, while CS controls device selection and initiates op-code interpretation on falling edge.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8), sufficient for storing calibration coefficients or boot configuration in compact embedded systems |
| Supply Voltage Range | 2.7 V to 5.5 V - supports direct interfacing with 3.3 V and 5 V microcontrollers without level-shifting |
| Max Clock Frequency | 20 MHz at VCC = 5 V - enables fast firmware parameter updates in real-time control loops |
| Write Endurance | 1 million cycles - ensures reliable logging of infrequent system events over 10+ years of field operation |
| Data Retention | 100 years - guarantees long-term integrity of stored settings across product lifecycle |
| Page Write Size | 8 bytes - minimizes bus occupancy during multi-byte configuration writes while avoiding wraparound risks |
| Operating Temperature | −40°C to +85°C - qualified for industrial ambient environments including factory automation and power metering |
Pinout & Package
AT25010A-10PU-2.7 uses an 8-lead JEDEC PDIP (package code 8P3) with 0.300" body width, RoHS-compliant green finish, and industrial temperature rating (−40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; falling edge initiates op-code sampling and defines SPI transaction boundaries |
| SCK | Serial Clock | Master-generated clock input; timing reference for SI sampling and SO output edges per SPI Mode 0 |
| SI | Serial Data Input | Unidirectional command/address/data path into device; MSB-first transmission required |
| SO | Serial Data Output | Unidirectional read-data path; high-impedance when CS high or HOLD active |
| GND | Ground Reference | Return path for all I/O and supply currents; must be low-impedance connection to avoid noise-induced corruption |
| VCC | Power Supply | Primary supply rail; decoupling capacitor (0.1 µF) required within 10 mm of pin for stable 20 MHz operation |
| WP | Write Protect | Hardware lock: low state disables all write instructions regardless of WREN status or status register settings |
| HOLD | Communication Suspend | Pauses ongoing SPI transfer without resetting internal state; requires SCK low during assertion/deassertion |
Key Features
| Feature | Design Value |
|---|---|
| SPI Mode 0 & 3 Support | Enables interoperability with diverse MCUs including legacy 68HC11 and modern ARM Cortex-M peripherals without protocol translation |
| Block Write Protection | Four configurable protection levels (none, 1/4, 1/2, full array) via nonvolatile BP1/BP0 bits, preventing accidental overwrite of critical firmware parameters |
| Self-timed Write Cycle | 5 ms maximum duration eliminates need for external delay timers or polling overhead in host firmware |
| Low Standby Current | 0.2 µA typical at 2.7 V - extends battery life in always-on sensor nodes and energy-harvesting applications |
| HOLD Pin Functionality | Allows master MCU to temporarily halt EEPROM communication during interrupt service routines without losing byte alignment or address pointer state |
Applications
| Industrial PLC I/O Module | Smart Energy Meter |
|---|---|
Use Scenario: Storing calibrated sensor offsets and channel-specific gain factors in DIN-rail mounted programmable logic controller expansion modules. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed during power-up initialization and runtime calibration updates via SPI. Use Value: Ensures deterministic startup behavior and traceable metrology compliance without requiring external backup batteries or supercapacitors. | Use Scenario: Retaining tariff schedules, billing cycle counters, and tamper-event logs in ANSI C12.20-compliant electricity meters. IC Role / Device Role / Timing Role: Secure, long-life data logger interfaced to metrology SoC via dedicated SPI bus with WP pin hardwired to prevent unauthorized firmware modification. Use Value: Meets 100-year data retention requirement for utility-grade revenue metering while supporting field-upgradable tariff tables. |
| Medical Infusion Pump | Automotive Body Control Module |
Use Scenario: Saving drug library definitions, dose limits, and operator audit trails in Class IIa infusion devices subject to IEC 62304 software lifecycle requirements. IC Role / Device Role / Timing Role: Safety-critical configuration store with hardware write protection enabled during normal operation to prevent runtime corruption. Use Value: Achieves SIL-2 functional safety targets by eliminating single-point failure modes in parameter storage subsystem. | Use Scenario: Holding seat position memory, mirror angle presets, and lighting configuration profiles in 12 V automotive BCMs. IC Role / Device Role / Timing Role: Low-voltage EEPROM accessible during cold-cranking (down to 2.7 V) and compatible with CAN-connected diagnostic tools for reprogramming. Use Value: Enables seamless user personalization features without increasing BOM cost versus discrete resistor-based memory solutions. |
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 8-lead SOIC package, 2.5–5.5 V supply, but lacks HOLD pin and has slower 10 MHz max clock | Higher density for extended logging; unsuitable where HOLD functionality is required for interrupt-safe access | Select when memory expansion is needed and HOLD is unused; verify timing margins for 10 MHz vs. 20 MHz host interface |
| BR24G12-3MNUX | I²C interface (not SPI), 12 Kbit, 1.7–5.5 V, built-in write protect via A0/A1 pins, no WP/HOLD pins | Requires I²C-capable MCU; eliminates need for dedicated WP control line but adds address pin routing complexity | Choose for designs already using I²C buses to reduce signal count; not drop-in replaceable due to protocol and pinout mismatch |
Compared with M95128-WMN6TP and BR24G12-3MNUX, the AT25010A-10PU-2.7 provides optimal balance of SPI compatibility, HOLD functionality for deterministic MCU interrupt handling, and proven 1-million-cycle endurance in constrained industrial layouts - making it preferred for new designs requiring robust, low-pin-count nonvolatile storage.
Availability
AT25010A-10PU-2.7 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, smart energy meters, medical infusion pumps, and automotive body control modules requiring stable component supply and long-term manufacturing continuity.
Supply support for AT25010A-10PU-2.7 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 products, with a focus on reliability and long-term support for industrial and automotive markets.
The AT25010A-10PU-2.7 belongs to Microchip's legacy Atmel serial EEPROM family, designed specifically for space-constrained, low-power embedded systems needing SPI-compatible nonvolatile storage with hardware write protection and industrial temperature operation.
FAQ
What is the maximum clock frequency supported by AT25010A-10PU-2.7 at 3.3 V operation?
The AT25010A-10PU-2.7 supports up to 10 MHz SCK frequency when VCC is between 2.7 V and 3.6 V, as specified in Table 4 AC Characteristics. This ensures reliable communication with 3.3 V microcontrollers such as STM32 or PIC32MX families without violating setup/hold timing margins. The AT25010A-10PU-2.7 maintains full functionality across its rated voltage range without derating.
Does AT25010A-10PU-2.7 support SPI Mode 3 (CPOL=1, CPHA=1)?
Yes, the AT25010A-10PU-2.7 explicitly supports both SPI Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1), as confirmed in the Features section of the datasheet. This dual-mode capability allows direct integration with MCUs like the NXP LPC series that default to Mode 3, eliminating the need for software workarounds or external logic. The AT25010A-10PU-2.7 interprets clock polarity and phase correctly in either mode.
How does the HOLD pin function during an active write cycle in AT25010A-10PU-2.7?
The HOLD pin has no effect during an internal write cycle (tWC); the AT25010A-10PU-2.7 ignores HOLD assertions until the write completes and returns to standby. During read or instruction phases, HOLD suspends communication while preserving the current address pointer and internal state. The AT25010A-10PU-2.7 resumes exactly where it left off upon HOLD deassertion, ensuring deterministic behavior in interrupt-driven firmware.
Can AT25010A-10PU-2.7 be used in automotive applications?
The AT25010A-10PU-2.7 is rated for −40°C to +85°C industrial temperature range and is not qualified to AEC-Q100 automotive standards. While it may function in benign automotive cabin environments, Microchip explicitly states in the datasheet disclaimer that "Atmel's products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life." For automotive body control modules, use automotive-qualified variants such as the AT25010B-MAHL-T.
What happens if the WP pin is pulled low mid-write on AT25010A-10PU-2.7?
If WP is driven low after CS falls but before the internal write cycle begins (i.e., during op-code/address/data transmission), the AT25010A-10PU-2.7 aborts the write and returns to standby. If WP goes low after the internal write has started, it has no effect - the cycle completes normally. This behavior is documented in the WRITE PROTECT section and ensures predictable failure modes. The AT25010A-10PU-2.7 does not corrupt partially written pages when WP is asserted.
AT25010A-10PU-2.7 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:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT25010A-10PU-2.7 FAQ
1.How can I place an order for AT25010A-10PU-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25010A-10PU-2.7 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-10PU-2.7 reliable?
The price and inventory of AT25010A-10PU-2.7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25010A-10PU-2.7 is usually 5 days.
3.What payment methods are accepted for AT25010A-10PU-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25010A-10PU-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25010A-10PU-2.7?
AT25010A-10PU-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25010A-10PU-2.7 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-10PU-2.7?
For technical support, including AT25010A-10PU-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25010A-10PU-2.7 requirements.
6.How does Aetrix verify that AT25010A-10PU-2.7 is sourced from the original manufacturer or authorized distributors?
All AT25010A-10PU-2.7 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-10PU-2.7 meets industry standards.
7.What is the process for return or replacement of AT25010A-10PU-2.7?
All AT25010A-10PU-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT25010A-10PU-2.7, 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-10PU-2.7 part is unused and in its original packaging.
Return procedure for AT25010A-10PU-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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