Microchip Technology 25LC080D-H/SN

Overview

25LC080D-H/SN from Microchip Technology is an 8-Kbit (1,024 × 8) SPI serial EEPROM with extended temperature operation (−40°C to +150°C), 5 MHz max clock speed, 32-byte page write capability, and hardware write protection via WP pin. It supports byte- and page-level writes, self-timed erase/write cycles (≤6 ms), and is AEC-Q100 qualified for automotive under-hood applications.

For engineers reviewing the 25LC080D-H/SN datasheet, 25LC080D-H/SN pinout, 25LC080D-H/SN application, or 25LC080D-H/SN equivalent, key selection criteria include high-temp endurance (>1M cycles), block write protection (0/¼/½/all array), HOLD pin support for interrupt-safe SPI pausing, and SOIC-8 (SN) packaging compatible with industrial control and automotive sensor modules.

Technical Context

This device implements a standard SPI Mode 0,0 or Mode 1,1 interface with separate SI (data in, latched on SCK rising edge) and SO (data out, updated after SCK falling edge) lines. Chip Select (CS) enables device selection and initiates internal write cycles on its rising edge, while HOLD suspends ongoing transfers without resetting sequence state.

It integrates nonvolatile status register control (WIP, WEL, BP0/BP1, WPEN), programmable block protection, power-on write-disable logic, and built-in ESD protection (>4 kV). All operations - read, write, status access - are fully specified across −40°C to +150°C at VCC = 2.5–5.5 V.

Key Specifications

Pinout & Package

8-Lead SOIC (SN) package: 3.90 mm body width, 1.27 mm pitch, RoHS-compliant matte tin lead finish per JEDEC MS-012.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial EEPROM applications.

Compared with 25LC080C-H/SN, the 25LC080D-H/SN offers larger page size (32 vs. 16 bytes) and full AEC-Q100 H-grade validation; versus AT25DF041A-SHN-T, it trades density and speed for deterministic write latency, HOLD functionality, and automotive reliability assurance.

Availability

25LC080D-H/SN is available at Aetrix Electronics and suitable for automotive engine management, industrial programmable logic controllers, medical infusion pump controllers, and high-temperature sensor modules requiring stable component supply across extended lifecycles.

Supply support for 25LC080D-H/SN 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 Inc. is a leading provider of microcontrollers, analog components, and memory solutions, serving automotive, industrial, and consumer markets with vertically integrated design and manufacturing.

The 25LCxxx family delivers mid-density SPI EEPROMs optimized for robustness in harsh environments, with emphasis on AEC-Q100 qualification, extended temperature operation, and reliable nonvolatile storage for safety-critical firmware and calibration data.

FAQ

What is the maximum clock frequency supported by the 25LC080D-H/SN?

The 25LC080D-H/SN supports a maximum clock frequency of 5 MHz when VCC is between 4.5 V and 5.5 V. At lower supply voltages (2.5 V ≤ VCC < 4.5 V), the maximum clock frequency is reduced to 3 MHz to ensure timing compliance across the full −40°C to +150°C operating range. This dual-speed specification enables flexible system-level voltage scaling without sacrificing interface performance in nominal conditions.

How does the HOLD pin function in the 25LC080D-H/SN?

The HOLD pin in the 25LC080D-H/SN suspends ongoing SPI communication without resetting the internal address pointer or command state. When asserted low (with SCK low), SI, SO, and SCK are placed in high-impedance states and ignored until HOLD is returned high (again with SCK low). This allows the host MCU to service urgent interrupts and resume exactly where the transfer left off - a critical capability for real-time automotive and industrial control systems using the 25LC080D-H/SN.

What write protection mechanisms does the 25LC080D-H/SN provide?

The 25LC080D-H/SN provides three layered write protections: (1) a write-enable latch (WEL) that must be set before any write, (2) a nonvolatile STATUS register with BP0/BP1 bits enabling 0%/25%/50%/100% array block protection, and (3) hardware write protection via the WP pin when WPEN bit is set. These features collectively prevent accidental or malicious overwrites of calibration data, bootloader code, or safety-critical parameters stored in the 25LC080D-H/SN.

Is the 25LC080D-H/SN AEC-Q100 qualified?

Yes, the 25LC080D-H/SN is AEC-Q100 qualified for Grade 0 (−40°C to +150°C), with reliability testing including 1,000 hours of high-temperature operating life (HTOL) at +150°C. This qualification confirms suitability for automotive under-hood applications such as engine control units, transmission control modules, and exhaust gas sensors - where the 25LC080D-H/SN serves as certified nonvolatile storage for mission-critical parameters.

What is the endurance and data retention specification for the 25LC080D-H/SN?

The 25LC080D-H/SN guarantees >1,000,000 erase/write cycles and >200 years of data retention at +150°C ambient temperature. These specifications are characterized and ensured per Microchip's Total Endurance™ model and apply across the full rated temperature and voltage range. This level of endurance and retention makes the 25LC080D-H/SN appropriate for applications requiring decades of unattended operation, such as automotive subsystems and industrial infrastructure controllers.