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Microchip Technology AT25HP512W2-10SI-2.7
- Part No.:
- AT25HP512W2-10SI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
AT25HP512W2-10SI-2.7.pdf
- Description:
- IC EEPROM 512KBIT SPI 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,960
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Product details
Overview
AT25HP512W2-10SI-2.7 from Atmel (now Microchip) is a 512 Kbit (65,536 × 8) serial SPI EEPROM optimized for industrial and commercial systems requiring low-voltage operation (2.7V–5.5V), high reliability, and fast 5 MHz clock rate at 2.7V. It supports SPI Modes 0 and 3, features 128-byte page write only, and includes hardware/software write protection via WP pin and status register.
For engineers reviewing the AT25HP512W2-10SI-2.7 datasheet, AT25HP512W2-10SI-2.7 pinout, AT25HP512W2-10SI-2.7 application, or AT25HP512W2-10SI-2.7 equivalent, this device is selected for embedded control storage, firmware parameter retention, and configuration memory in space-constrained industrial controllers where 16-lead JEDEC SOIC packaging, >40-year data retention, and 100K endurance are critical design requirements.
Technical Context
The AT25HP512W2-10SI-2.7 operates as an SPI slave with separate SI/SO pins, MSB-first transmission, and no erase cycle required before write. Its internal 8-bit instruction register executes op-codes including WREN, WRDI, RDSR, WRSR, READ, and WRITE - all initiated by CS falling edge.
Block write protection is implemented via nonvolatile BP0/BP1 bits in the status register, enabling protection of top 1/4, top 1/2, or entire memory array (0000–FFFFh). The HOLD pin suspends ongoing serial communication without resetting the sequence, while WP pin + WPEN bit enable hardware-level status register lockout when asserted.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 524,288 bits (65,536 × 8), sufficient for storing full configuration sets or boot parameters in microcontroller-based systems. |
| Supply Voltage Range | 2.7V to 5.5V - enables direct integration into 3.3V and 5V logic domains without level-shifting. |
| Max Clock Frequency | 5 MHz at VCC = 2.7V - supports high-throughput parameter updates in real-time industrial monitoring applications. |
| Write Endurance | 100,000 cycles - ensures reliable logging or calibration data storage over multi-year product lifetimes. |
| Data Retention | >40 years at 85°C - guarantees long-term integrity of factory-trimmed coefficients or security keys without refresh. |
| Page Write Size | 128-byte only - mandates aligned burst writes; prevents partial-page corruption but requires host-side buffering management. |
| Operating Temperature | –40°C to +85°C - qualified for use in industrial PLCs, motor drives, and outdoor metering equipment. |
Pinout & Package
AT25HP512W2-10SI-2.7 is packaged in a 16-lead JEDEC SOIC (16S2), 0.300" wide body, RoHS-compliant and lead-free. Pin 1 is marked with a notch or dot; package dimensions comply with JEDEC MS-013, Variation AA.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select input | Active-low enable: initiates all SPI transactions; must be held low during full command sequence (op-code + address + data). |
| SCK | Serial clock input | Synchronous timing reference; device operates as slave only - no clock output or bidirectional capability. |
| SI | Serial data input | Receives op-codes, addresses, and write data; ignored during HOLD or when CS is high. |
| SO | Serial data output | Drives read data and status bits; enters high-impedance state when CS is high or during internal write cycle. |
| WP | Write protect input | Hardware lock: when WPEN=1 and WP=low, blocks all status register writes and protected memory writes. |
| HOLD | Communication suspend input | Pauses ongoing SPI transfer (e.g., during interrupt servicing) without losing byte alignment or address counter state. |
| GND | Ground reference | Return path for all digital I/O and supply current; requires low-impedance connection to system ground plane. |
| VCC | Power supply | Single 2.7–5.5V rail powers core logic and I/O; decoupling capacitor (0.1 µF ceramic) required within 10 mm. |
Key Features
| Feature | Design Value |
|---|---|
| SPI Mode 0 & 3 compatibility | Interoperates with legacy and modern microcontrollers (e.g., STM32, PIC, MSP430) without protocol translation logic. |
| 128-byte page write only | Eliminates risk of partial-page overwrite; enforces atomicity for firmware update blocks or calibration tables. |
| Triple-level block protection (1/4, 1/2, full) | Allows secure partitioning: e.g., lock bootloader region (top 1/4), leave user config (lower 3/4) writable. |
| WP pin + WPEN bit hardware lock | Prevents accidental status register modification even during power-up glitches or firmware bugs. |
| HOLD pin suspend function | Maintains transaction context across CPU interrupts - avoids re-synchronization overhead in real-time OS environments. |
Applications
| Industrial PLC Configuration Storage | Medical Device Calibration Data Retention |
|---|---|
|
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 memory accessed via SPI during boot and runtime parameter adjustment. Use Value: Ensures deterministic startup behavior and field-upgradable settings without battery backup or external NVRAM. |
Use Scenario: Holding factory-calibrated sensor offsets, gain coefficients, and safety-critical operational limits in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, long-life data vault interfaced to ARM Cortex-M host MCU during initialization and service mode. Use Value: Meets IEC 62304 Class C software requirements with >40-year data retention and 100K write cycles for recalibration events. |
| Smart Energy Meter Firmware Parameters | Automotive Body Control Module Settings |
|
Use Scenario: Storing tariff schedules, demand-response flags, and tamper-event logs in ANSI C12.22-compliant electricity meters. IC Role / Device Role / Timing Role: SPI EEPROM used for infrequent but mission-critical parameter updates under strict EMC conditions. Use Value: Withstands 10kV ESD (HBM) and operates reliably across –40°C to +85°C ambient - validated per ANSI C12.1. |
Use Scenario: Saving seat position memory, mirror presets, and lighting profiles in automotive BCMs operating on 12V battery-supplied 3.3V rails. IC Role / Device Role / Timing Role: Low-power configuration store accessed during ignition-on sequence and driver personalization routines. Use Value: 0.2 µA standby current at 2.7V minimizes parasitic drain; 2.7–5.5V range accommodates brown-out conditions during cranking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT25DF512C-SSHL-T | Same density (512 Kbit), SPI interface, but NOR Flash architecture - slower write (20 ms/page), no page-write restriction. | Used where code shadowing or firmware storage is needed alongside data; not suitable for frequent small writes. | Select if firmware + config co-location is required; avoid for high-cycle parameter logging. |
| M95512-DRMN6TP/K | 512 Kbit SPI EEPROM, 16-lead SOIC, 1.8–5.5V, 10 MHz @ 5V, but only 10K endurance and 20-year retention. | Targeted at consumer electronics with shorter lifecycle; lacks BP1/BP0 granularity and HOLD pin. | Choose for cost-sensitive, non-industrial designs where 100K cycles and >40-year retention are not mandatory. |
Compared with AT25HP512W2-10SI-2.7, AT25DF512C-SSHL-T trades write endurance and page-write simplicity for flash-like code storage capability, while M95512-DRMN6TP/K reduces reliability margins to meet price targets - making the AT25HP512W2-10SI-2.7 optimal for industrial-grade parameter persistence where longevity and deterministic write behavior are non-negotiable.
Availability
AT25HP512W2-10SI-2.7 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 production lifecycles.
Supply support for AT25HP512W2-10SI-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 (acquired Atmel in 2016) is a global leader in microcontrollers, analog, and memory solutions, emphasizing robustness, longevity, and industrial qualification.
The AT25HP512W2-10SI-2.7 belongs to Atmel's legacy HP-series serial EEPROM family, designed specifically for high-reliability, low-voltage embedded systems where guaranteed data integrity over decades is essential.
FAQ
What is the maximum clock frequency supported by AT25HP512W2-10SI-2.7 at 2.7V?
The AT25HP512W2-10SI-2.7 supports up to 5 MHz SCK frequency when VCC = 2.7V, as specified in Table 4 of the datasheet. This allows efficient parameter reads/writes in time-critical industrial interfaces without requiring clock dividers or wait states.
Does AT25HP512W2-10SI-2.7 support individual byte writes?
No, AT25HP512W2-10SI-2.7 supports only 128-byte page writes - byte-level writes are not functional. Attempting a write with fewer than 128 bytes results in undefined page content; host firmware must buffer and align all writes to 128-byte boundaries.
How does the HOLD pin function during an active SPI transaction on AT25HP512W2-10SI-2.7?
The HOLD pin suspends serial communication when driven low while SCK is low; the device retains its internal address counter and instruction state. Resuming requires bringing HOLD high while SCK remains low - no reinitialization or restart of the command sequence is needed.
What package type is used for AT25HP512W2-10SI-2.7?
AT25HP512W2-10SI-2.7 uses a 16-lead JEDEC SOIC (16S2) package, 0.300" wide body, with gull-wing leads and RoHS-compliant lead-free finish - compatible with standard SOIC reflow profiles and automated optical inspection.
Can AT25HP512W2-10SI-2.7 be used in a 1.8V system?
No - AT25HP512W2-10SI-2.7 is the 2.7V variant (2.7V–5.5V operation). For 1.8V systems, the correct part is AT25HP512W2-10SI-1.8, which supports 1.8V–5.5V and operates up to 2 MHz at 1.8V.
AT25HP512W2-10SI-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 512Kbit
- Memory Organization:
- 64K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 10 MHz
- Write Cycle Time - Word, Page:
- 10ms
- Access Time:
- -
- Voltage - Supply:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
AT25HP512W2-10SI-2.7 FAQ
1.How can I place an order for AT25HP512W2-10SI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25HP512W2-10SI-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 AT25HP512W2-10SI-2.7 reliable?
The price and inventory of AT25HP512W2-10SI-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 AT25HP512W2-10SI-2.7 is usually 5 days.
3.What payment methods are accepted for AT25HP512W2-10SI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25HP512W2-10SI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25HP512W2-10SI-2.7?
AT25HP512W2-10SI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25HP512W2-10SI-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 AT25HP512W2-10SI-2.7?
For technical support, including AT25HP512W2-10SI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25HP512W2-10SI-2.7 requirements.
6.How does Aetrix verify that AT25HP512W2-10SI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT25HP512W2-10SI-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 AT25HP512W2-10SI-2.7 meets industry standards.
7.What is the process for return or replacement of AT25HP512W2-10SI-2.7?
All AT25HP512W2-10SI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT25HP512W2-10SI-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 AT25HP512W2-10SI-2.7 part is unused and in its original packaging.
Return procedure for AT25HP512W2-10SI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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