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Microchip Technology AT25HP512-10PI-1.8
- Part No.:
- AT25HP512-10PI-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT25HP512-10PI-1.8.pdf
- Description:
- IC EEPROM 512KBIT SPI 10MHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,334
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Product details
Overview
AT25HP512-10PI-1.8 from Atmel (now Microchip) is a 512 Kbit (65,536 × 8) serial SPI EEPROM optimized for low-voltage embedded systems. It operates from 1.8V to 5.5V, supports 2 MHz clock rate at 1.8V, features 128-byte page write mode, and includes hardware/software write protection via WP pin and status register. It is used in industrial control modules requiring nonvolatile parameter storage with extended data retention.
For engineers reviewing the AT25HP512-10PI-1.8 datasheet, AT25HP512-10PI-1.8 pinout, AT25HP512-10PI-1.8 application, or AT25HP512-10PI-1.8 equivalent, key selection criteria include 1.8V operation capability, 2 MHz SPI timing compliance, block write protection granularity (1/4, 1/2, or full array), endurance of 100K write cycles, and JEDEC 16-lead SOIC package compatibility with industrial temperature range (–40°C to +85°C).
Technical Context
The AT25HP512-10PI-1.8 implements a standard 3-wire SPI slave interface (CS, SCK, SI/SO) supporting Modes 0 and 3. Its internal architecture uses a nonvolatile status register with BP0/BP1 bits to configure top-quarter, top-half, or full-array write protection, and a WPEN bit enabling hardware lock of the status register when WP is low.
All write operations require prior WREN instruction and are self-timed with no external erase cycle. The HOLD pin suspends ongoing serial transfers without resetting the sequence, and the device maintains high-impedance SO during CS high or HOLD active states - critical for multi-device SPI bus sharing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 524,288 bits (65,536 × 8 bytes); sufficient for firmware configuration tables or calibration data in resource-constrained controllers. |
| Supply Voltage Range | 1.8V to 5.5V; enables direct integration into 1.8V logic domains without level-shifting circuitry. |
| Max SPI Clock Rate | 2 MHz at 1.8V; defines maximum sustained read/write throughput under low-voltage operation. |
| Write Endurance | 100,000 cycles per memory location; supports frequent parameter updates in field-deployed equipment. |
| Data Retention | >40 years at +85°C; ensures long-term reliability in unattended industrial monitoring applications. |
| Operating Temperature | –40°C to +85°C; qualified for use in industrial automation, metering, and automotive body electronics. |
| Package | 16-lead JEDEC SOIC (16S2); compatible with standard surface-mount assembly and reflow profiles. |
Pinout & Package
AT25HP512-10PI-1.8 is housed in a 16-lead JEDEC SOIC package (16S2), measuring 0.3977"–0.4133" × 0.2914"–0.2992", with 0.050" lead pitch. Pin 1 is marked by a notch or bevel on the package top edge.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (CS) | Chip Select | Active-low enable; must be driven low to initiate any SPI transaction; high-Z SO when CS high. |
| 2 (SO) | Serial Data Output | Tri-state output for read data; high-impedance when CS high or during HOLD assertion. |
| 3–4 (NC) | No Connect | Internally unused; must remain unconnected per datasheet; not bonded or functional. |
| 5–8 (NC) | No Connect | Four additional NC pins; electrically isolated; PCB layout must avoid routing or stitching. |
| 9 (WP) | Write Protect | Hardware lock for status register when WPEN=1; prevents accidental writes during power transitions. |
| 10 (GND) | Ground Reference | Primary return path for VCC current and signal references; requires low-impedance PCB plane connection. |
| 11 (VCC) | Power Supply | Single supply input (1.8–5.5V); decoupling capacitor (0.1 µF) required within 10 mm of pin. |
| 12 (HOLD) | Serial Bus Hold | Pauses ongoing SPI transfer when pulled low while SCK is low; resumes on rising edge with SCK low. |
| 13–14 (NC) | No Connect | Two more NC pins; no internal bonding; must be left floating or grounded per design rules. |
| 15 (SCK) | Serial Clock Input | Master-generated clock; timing-critical path; requires controlled impedance trace if >1 MHz. |
| 16 (SI) | Serial Data Input | Command/address/data input; sampled on SCK rising edge in Mode 0; MSB-first protocol. |
Key Features
| Feature | Design Value |
|---|---|
| 128-byte Page Write Mode | Enables efficient bulk programming without byte-by-byte overhead; reduces total write time by up to 127× vs. single-byte writes. |
| Triple-Voltage Operation | Supports 1.8V, 2.7V, and 5V domains in one device; eliminates need for multiple BOM variants across product families. |
| Block Write Protection | Configurable via status register to protect top 1/4, 1/2, or entire memory array - ideal for safeguarding bootloader or calibration sectors. |
| HOLD Pin Functionality | Allows master MCU to pause EEPROM communication mid-transfer without losing address state - essential for real-time interrupt handling. |
| Hardware + Software Write Protection | Combines WP pin (physical lock) with WRSR instruction (logical control) for layered data integrity in safety-critical systems. |
Applications
| Industrial PLC Configuration Storage | Smart Meter Firmware Parameter Tables |
|---|---|
Use Scenario: Storing I/O mapping, scaling coefficients, and alarm thresholds in programmable logic controllers deployed in factory environments. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed via SPI during boot and runtime reconfiguration; operates at 1.8V alongside low-power microcontrollers. Use Value: >40-year data retention ensures calibration data survives decades of operation without battery backup or refresh cycles. | Use Scenario: Holding tariff schedules, billing counters, and communication protocol settings in ANSI C12.19-compliant electricity meters. IC Role / Device Role / Timing Role: SPI EEPROM interfaced to metrology SoC; write-protected sectors prevent tampering with revenue-critical parameters. Use Value: Block protection (BP0/BP1) isolates firmware update areas from user-modifiable fields, meeting ANSI C12.22 security requirements. |
| Automotive Body Control Module (BCM) | Medical Diagnostic Equipment Calibration Data |
Use Scenario: Saving seat position presets, mirror angles, and lighting profiles in 12V automotive BCMs with 1.8V logic rails. IC Role / Device Role / Timing Role: Low-voltage serial EEPROM directly connected to 1.8V CAN controller MCU; withstands –40°C to +85°C ambient. Use Value: 100K endurance supports daily user adjustments over 10+ years of vehicle service life. | Use Scenario: Storing sensor gain/offset values and diagnostic test results in portable ultrasound or ECG devices. IC Role / Device Role / Timing Role: SPI-configured memory storing NIST-traceable calibration constants; accessed only during factory setup or service mode. Use Value: Hardware WP pin + WPEN bit ensures calibration data cannot be overwritten in-field without physical access and deliberate unlock sequence. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95512-DRMN6TP/K | 512 Kbit SPI EEPROM, 1.8–5.5V, 10 MHz @ 5V but only 1 MHz @ 1.8V; 8-lead SOIC package. | Lacks HOLD pin and NC pin configuration; no 16-lead SOIC option - limits board layout flexibility in dense designs. | Select when higher 5V-speed is prioritized and 16-pin footprint is unnecessary. |
| BR24T512FJ-WE2 | 512 Kbit I²C EEPROM, 1.7–5.5V, 1 MHz max; 8-lead SOP package; built-in error correction. | I²C interface requires different MCU peripheral setup and lacks HOLD functionality; lower speed at 1.8V than AT25HP512-10PI-1.8's 2 MHz SPI. | Select when I²C bus already dominates system architecture and ECC for enhanced reliability is required. |
Compared with M95512-DRMN6TP/K and BR24T512FJ-WE2, the AT25HP512-10PI-1.8 uniquely delivers 2 MHz SPI performance at 1.8V in a 16-lead SOIC package with HOLD and configurable block protection - making it optimal for industrial controllers needing deterministic timing and robust layout isolation.
Availability
AT25HP512-10PI-1.8 is available at Aetrix Electronics and suitable for industrial PLCs, smart utility meters, and automotive body control modules requiring stable component supply across extended product lifecycles.
Supply support for AT25HP512-10PI-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) is a leading provider of microcontrollers, analog components, and memory solutions, emphasizing reliability, longevity, and industrial-grade qualification.
The AT25HP512-10PI-1.8 belongs to Atmel's legacy HP-series serial EEPROM family, designed specifically for low-voltage, high-reliability nonvolatile storage in space-constrained industrial and automotive control systems.
FAQ
What is the maximum SPI clock frequency supported by AT25HP512-10PI-1.8 at 1.8V?
The AT25HP512-10PI-1.8 supports up to 2 MHz SPI clock frequency when operating at 1.8V supply voltage, as specified in Table 4 AC Characteristics. This value is validated across the full industrial temperature range (–40°C to +85°C) and defines the upper limit for reliable read/write timing margins. Exceeding this frequency may result in data corruption or command rejection. The AT25HP512-10PI-1.8 datasheet explicitly lists 2 MHz as the maximum for the 1.8–5.5V range.
Does AT25HP512-10PI-1.8 support byte-write operations?
No, the AT25HP512-10PI-1.8 supports only 128-byte page write operations - byte writes are not functional. Attempting to write fewer than 128 bytes in a single WRITE instruction will result in undefined content in that page. The device requires exactly 128 data bytes after the address to complete a valid page write; partial writes are not guaranteed and must be avoided in firmware design. This behavior is documented in the "WRITE SEQUENCE" section of the AT25HP512-10PI-1.8 datasheet.
How does the HOLD pin function during an active SPI transaction on AT25HP512-10PI-1.8?
The HOLD pin on AT25HP512-10PI-1.8 suspends serial communication without resetting the internal address counter or command state. To activate HOLD, the pin must be driven low while SCK is low; the SO pin enters high-impedance, and SI inputs are ignored. Resuming requires bringing HOLD high while SCK remains low. This allows the host MCU to service interrupts or perform other tasks mid-transfer. The AT25HP512-10PI-1.8 retains full context and continues seamlessly upon resume.
Can AT25HP512-10PI-1.8 be used in a 5V system?
Yes, the AT25HP512-10PI-1.8 is fully compatible with 5V systems: its supply voltage range is 1.8V to 5.5V, and it supports 10 MHz SPI clock rate at 5V. All DC and AC specifications - including VIH/VIL thresholds, VOL/VOH levels, and timing parameters - are characterized across this full range. The "-1.8" suffix denotes low-voltage optimization, not exclusion from 5V operation. The AT25HP512-10PI-1.8 functions identically in 5V logic domains with appropriate level-compatible drivers.
What package type is used for AT25HP512-10PI-1.8?
The AT25HP512-10PI-1.8 uses a 16-lead JEDEC SOIC package (designated 16S2), with 0.300" body width and 0.050" lead pitch. This is confirmed in the "AT25HP512 Ordering Information" table, where "-10PI-1.8" maps to package code "16S2". The package includes eight NC pins (pins 3–4, 5–8, 13–14), requiring careful PCB layout to avoid unintended shorts or noise coupling. The AT25HP512-10PI-1.8 drawing number is referenced as 16S2 in Microchip's packaging documentation.
AT25HP512-10PI-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:
- 512Kbit
- Memory Organization:
- 64K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 10 MHz
- Write Cycle Time - Word, Page:
- 10ms
- 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
AT25HP512-10PI-1.8 FAQ
1.How can I place an order for AT25HP512-10PI-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25HP512-10PI-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 AT25HP512-10PI-1.8 reliable?
The price and inventory of AT25HP512-10PI-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 AT25HP512-10PI-1.8 is usually 5 days.
3.What payment methods are accepted for AT25HP512-10PI-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25HP512-10PI-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25HP512-10PI-1.8?
AT25HP512-10PI-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25HP512-10PI-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 AT25HP512-10PI-1.8?
For technical support, including AT25HP512-10PI-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25HP512-10PI-1.8 requirements.
6.How does Aetrix verify that AT25HP512-10PI-1.8 is sourced from the original manufacturer or authorized distributors?
All AT25HP512-10PI-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 AT25HP512-10PI-1.8 meets industry standards.
7.What is the process for return or replacement of AT25HP512-10PI-1.8?
All AT25HP512-10PI-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT25HP512-10PI-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 AT25HP512-10PI-1.8 part is unused and in its original packaging.
Return procedure for AT25HP512-10PI-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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