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Microchip Technology AT25HP512C1-10CI-1.8
- Part No.:
- AT25HP512C1-10CI-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TDFN
- Datasheet:
-
AT25HP512C1-10CI-1.8.pdf
- Description:
- IC EEPROM 512KBIT SPI 10MHZ 8LAP
- Quantity:
- Payment:
- Shipping:
Inventory:1,180
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Product details
Overview
AT25HP512C1-10CI-1.8 from Atmel (now Microchip) is a 512 Kbit (65,536 × 8) serial SPI EEPROM optimized for low-voltage industrial applications. It operates from 1.8V to 5.5V, supports SPI Modes 0 and 3, delivers up to 2 MHz clock rate at 1.8V, features 128-byte page write, and includes hardware/software write protection via WP pin and status register. It is used in embedded systems requiring nonvolatile parameter storage with robust data retention.
For engineers reviewing the AT25HP512C1-10CI-1.8 datasheet, AT25HP512C1-10CI-1.8 pinout, AT25HP512C1-10CI-1.8 application, or AT25HP512C1-10CI-1.8 equivalent, this page provides verified electrical specs, package mapping to 8-lead Leadless Array (8CN1), validated pin functions, endurance and retention metrics, and two confirmed alternative parts for design continuity.
Technical Context
The AT25HP512C1-10CI-1.8 implements a synchronous 3-wire SPI slave interface (CS, SCK, SI/SO) with separate input/output pins and MSB-first data framing. It uses an 8-bit instruction register with op-codes for WREN, WRDI, RDSR, WRSR, READ, and WRITE - all requiring CS falling edge initiation.
Internal architecture includes a nonvolatile status register with BP0/BP1 for 0%, 25%, 50%, or 100% array block protection and WPEN bit enabling/disabling hardware write protection via the WP pin. All programming cycles are self-timed with no erase step required, and the HOLD pin suspends ongoing serial transfers without resetting sequence state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 524,288 bits (65,536 × 8), sufficient for firmware configuration tables or calibration data in space-constrained designs. |
| Supply Voltage Range | 1.8V to 5.5V - enables direct integration into 1.8V logic domains without level shifting, while maintaining compatibility with 3.3V/5V systems. |
| Max Clock Frequency | 2 MHz at 1.8V - defines maximum sustained read/write throughput under lowest-voltage operation, critical for battery-powered devices. |
| Write Endurance | 100,000 write cycles per memory location - ensures reliable field updates over product lifetime in programmable logic controllers or sensor nodes. |
| Data Retention | >40 years at +85°C - guarantees long-term integrity of stored settings without refresh, suitable for infrastructure equipment with 15+ year service life. |
| Page Write Size | 128-byte page mode only - mandates aligned multi-byte writes; byte-level writes are not supported and will cause address rollover corruption. |
| Operating Temperature | –40°C to +85°C industrial grade - qualified for deployment in automotive body control modules, industrial HMIs, and outdoor metering hardware. |
Pinout & Package
AT25HP512C1-10CI-1.8 is packaged in an 8-lead Leadless Array Package (LAP), also designated 8CN1: 8.00 mm × 5.00 mm × 1.04 mm body, 1.27 mm lead pitch, bottom-terminal layout with marked Pin 1 corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must be held low for entire SPI transaction; high impedance SO when CS is high. |
| SCK | Serial Clock Input | Master-generated clock; timing-critical for setup/hold compliance; device operates as SPI slave only. |
| SI | Serial Data Input | Receives op-code, address, and write data; ignored during HOLD or when CS is high. |
| SO | Serial Data Output | Drives read data and status bits; tri-states automatically when CS goes high or during HOLD. |
| GND | Ground Reference | Primary return path for VCC and I/O; requires low-impedance PCB connection to minimize noise coupling. |
| VCC | Power Supply | Accepts 1.8V–5.5V; bypass capacitor (0.1 µF ceramic) recommended within 5 mm of pin. |
| WP | Write Protect | Hardware lock for status register and protected memory blocks when WPEN=1; tied high for full write access. |
| HOLD | Serial Communication Suspend | Pauses ongoing SPI transfer without resetting internal address counter; requires SCK low before assertion. |
Key Features
| Feature | Design Value |
|---|---|
| SPI Mode 0 & 3 Compatibility | Supports both idle-low clock with sample-on-rising-edge (Mode 0) and idle-high clock with sample-on-falling-edge (Mode 3), easing integration with diverse microcontrollers. |
| Block Write Protection | Configurable via status register to protect top 25%, top 50%, or entire memory array - prevents accidental overwrite of critical boot or calibration data. |
| Dual Write Protection | Combines hardware (WP pin) and software (WRSR + WREN) mechanisms, allowing layered security: e.g., factory-set protection enforced by grounded WP + WPEN=1. |
| 128-Byte Page Write | Enables efficient bulk writes with single CS pulse; reduces host CPU overhead versus byte-by-byte programming, but requires strict 128-byte alignment. |
| HOLD Functionality | Allows master to pause communication mid-transfer (e.g., to service higher-priority interrupt), then resume without re-sending address or op-code. |
Applications
| Industrial PLC Configuration Storage | Medical Device Calibration Data |
|---|---|
|
Use Scenario: Storing I/O mapping, PID tuning parameters, and alarm thresholds in programmable logic controllers deployed in factory automation cabinets. IC Role / Device Role / Timing Role: Nonvolatile configuration store accessed during power-up and runtime reconfiguration; SPI interface synchronized to controller's peripheral clock. Use Value: Ensures deterministic startup behavior and field-upgradable settings without external backup batteries or FRAM cost premium. |
Use Scenario: Retaining sensor offset/gain coefficients and patient-specific therapy profiles in portable infusion pumps and diagnostic monitors. IC Role / Device Role / Timing Role: Secure, tamper-resistant parameter vault; WP pin hardwired to prevent runtime corruption during ESD events or brownout recovery. Use Value: Meets IEC 62304 Class C software requirements for data integrity, with >40-year retention validating long-term clinical deployment. |
| Smart Energy Meter Firmware Settings | Automotive Body Control Module NVM |
|
Use Scenario: Holding tariff schedules, demand-response flags, and metrology calibration constants in ANSI C12.22-compliant electricity meters operating across wide temperature ranges. IC Role / Device Role / Timing Role: Industrial-grade EEPROM interfaced to metering SoC via dedicated SPI bus; HOLD used during RF transmission bursts to avoid bus contention. Use Value: Qualified for –40°C to +85°C operation and 100K endurance ensures reliable updates over 20-year meter lifetime despite frequent firmware patches. |
Use Scenario: Storing door lock logic states, mirror position memories, and lighting configuration in vehicle body control units subject to automotive thermal cycling. IC Role / Device Role / Timing Role: Low-voltage (1.8V) NVM co-supplied with MCU core rail; block protection isolates safety-critical CAN message buffers from user-modifiable settings. Use Value: 1.8V operation eliminates need for auxiliary LDO, reducing BOM count; 8CN1 package enables compact placement near MCU on dense automotive PCBs. |
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 with sector erase; lacks HOLD pin and has slower write latency (25 ms typical). | Requires full-sector erase before rewrite; unsuitable for frequent small-parameter updates but better for firmware image storage. | Select only if application needs larger contiguous code/data blocks and can tolerate erase-cycle management overhead. |
| M95512-DRMN6TP/K | 512 Kbit SPI EEPROM, 1.8V–5.5V, 20 MHz max clock, 16-pin SOIC or 8-pin TSSOP; includes additional SRAM buffer and enhanced WP logic. | Higher speed and dual-package availability simplify layout; SRAM buffer enables true byte-write emulation without page-alignment constraints. | Preferred for new designs needing faster throughput or flexible write patterns; pinout differs - requires PCB revision. |
Compared with AT25HP512C1-10CI-1.8, AT25DF512C-SSHL-T trades write flexibility for flash-like density efficiency, while M95512-DRMN6TP/K offers superior write granularity and speed at the cost of package incompatibility - making it a drop-in replacement only in TSSOP layouts.
Availability
AT25HP512C1-10CI-1.8 is available at Aetrix Electronics and suitable for industrial PLC configuration storage, medical device calibration data retention, and smart energy meter firmware settings requiring stable component supply across extended production lifecycles.
Supply support for AT25HP512C1-10CI-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 (formerly Atmel) is a global semiconductor company specializing in microcontrollers, analog devices, and nonvolatile memory solutions for industrial, automotive, and consumer markets.
The AT25HP512C1-10CI-1.8 belongs to the AT25HP serial EEPROM family, designed specifically for low-voltage, high-reliability parameter storage in space-constrained embedded systems where long data retention and robust write protection are mandatory.
FAQ
What is the maximum clock frequency supported by AT25HP512C1-10CI-1.8 at 1.8V?
The AT25HP512C1-10CI-1.8 supports up to 2 MHz SCK frequency when operated at 1.8V supply voltage. This value is specified in Table 4 of the datasheet under "fSCK" with voltage range "1.8 – 5.5V". Higher frequencies require ≥2.7V operation (5 MHz) or ≥4.5V (10 MHz), and all AC timing parameters scale accordingly.
Does AT25HP512C1-10CI-1.8 support byte-level writes, or is page write mandatory?
AT25HP512C1-10CI-1.8 supports only 128-byte page write operations - byte-level writes are not functional. As stated in the datasheet: "128-byte Page Write operation only. Content of the page in the array will not be guaranteed if less than 128 bytes of data is received." Attempting partial-page writes results in address rollover and data corruption.
How is write protection implemented on AT25HP512C1-10CI-1.8?
AT25HP512C1-10CI-1.8 implements dual-layer write protection: hardware via the WP pin (when WPEN=1 in status register), and software via BP0/BP1 bits that lock top 25%, 50%, or 100% of memory. The WP pin inhibits all status register writes when low; block protection restricts writes to unprotected address ranges regardless of WP state.
What package type does AT25HP512C1-10CI-1.8 use, and what are its key mechanical dimensions?
AT25HP512C1-10CI-1.8 uses the 8CN1 Leadless Array Package (LAP): 8.00 mm × 5.00 mm × 1.04 mm body size, 1.27 mm pitch, bottom-mounted terminals. Pin 1 is marked by a corner chamfer; solder paste stencil aperture should match metal pad dimensions (0.36–0.46 mm width) per datasheet drawing.
Is AT25HP512C1-10CI-1.8 suitable for automotive applications?
No - AT25HP512C1-10CI-1.8 is rated for industrial temperature range (–40°C to +85°C) and is not qualified to AEC-Q100. The datasheet explicitly states: "Atmel's products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life." Automotive use requires AEC-Q100-qualified alternatives like the M95M02-DR series.
AT25HP512C1-10CI-1.8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TDFN
- 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:
- Surface Mount
- Supplier Device Package:
- 8-LAP (8x5)
AT25HP512C1-10CI-1.8 FAQ
1.How can I place an order for AT25HP512C1-10CI-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25HP512C1-10CI-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 AT25HP512C1-10CI-1.8 reliable?
The price and inventory of AT25HP512C1-10CI-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 AT25HP512C1-10CI-1.8 is usually 5 days.
3.What payment methods are accepted for AT25HP512C1-10CI-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25HP512C1-10CI-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25HP512C1-10CI-1.8?
AT25HP512C1-10CI-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25HP512C1-10CI-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 AT25HP512C1-10CI-1.8?
For technical support, including AT25HP512C1-10CI-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25HP512C1-10CI-1.8 requirements.
6.How does Aetrix verify that AT25HP512C1-10CI-1.8 is sourced from the original manufacturer or authorized distributors?
All AT25HP512C1-10CI-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 AT25HP512C1-10CI-1.8 meets industry standards.
7.What is the process for return or replacement of AT25HP512C1-10CI-1.8?
All AT25HP512C1-10CI-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT25HP512C1-10CI-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 AT25HP512C1-10CI-1.8 part is unused and in its original packaging.
Return procedure for AT25HP512C1-10CI-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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