Microchip Technology 25LC010A-I/SN

Overview

25LC010A-I/SN from Microchip Technology Inc. is a 1 Kbit (128 × 8) SPI Serial EEPROM with 16-byte page write capability, 10 MHz max clock frequency, and industrial temperature range (–40°C to +85°C). It features hardware write protection (WP pin), HOLD functionality for interrupt-safe pausing, and block-level write protection (none/¼/½/all array). Used in microcontroller-based systems for storing calibration data, configuration settings, or firmware parameters.

For engineers reviewing the 25LC010A-I/SN datasheet, 25LC010A-I/SN pinout, 25LC010A-I/SN application, or 25LC010A-I/SN equivalent, key selection criteria include VCC range (2.5–5.5V), SO/SI/SCK/CS/HOLD/WP/VSS/VCC 8-pin interface, 5 µA standby current, 5 ms max write cycle time, and 1M endurance cycles - critical for low-power embedded storage and field-updatable devices.

Technical Context

The 25LC010A-I/SN implements a standard SPI Mode 0,0 or Mode 1,1 interface with separate SI (data in) and SO (data out) lines, requiring CS assertion and SCK synchronization. Its internal architecture includes an 8-bit instruction register, page latches, and high-voltage generation circuitry for EEPROM programming.

Write operations require explicit WREN instruction followed by CS high-to-low transition to initiate self-timed internal write cycle (TWC ≤ 5 ms); status polling via RDSR (WIP bit) is supported. Block protection is controlled nonvolatively via BP0/BP1 bits in STATUS register, enabling selective 0%, 25%, 50%, or 100% array write-lock.

Key Specifications

Pinout & Package

25LC010A-I/SN is packaged in 8-lead SOIC (SN), with body dimensions 3.9 mm × 4.9 mm × 1.75 mm and standard JEDEC MS-012AC footprint. Pin 1 marked by laser dot or bevelled edge.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 25AA010A-I/SN and AT25010B-SSHL-T, the 25LC010A-I/SN provides optimal balance of industrial temperature rating, proven reliability in Microchip's ecosystem, and cost efficiency for 2.5–5.5V systems - making it the preferred choice for established designs and volume production.

Availability

25LC010A-I/SN is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, and automotive body control modules requiring stable component supply and long-term lifecycle support.

Supply support for 25LC010A-I/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, FPGA, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.

The 25LC010A belongs to Microchip's 25XX010A family of SPI Serial EEPROMs, designed specifically for reliable, low-power nonvolatile storage in resource-constrained embedded systems across industrial, medical, and automotive markets.

FAQ

What is the maximum clock frequency supported by the 25LC010A-I/SN?

The 25LC010A-I/SN supports a maximum clock frequency of 10 MHz when VCC is 4.5V to 5.5V. At 2.5V ≤ VCC < 4.5V, the limit drops to 5 MHz, and at 1.8V ≤ VCC < 2.5V, it is 3 MHz. These graded limits ensure reliable timing margins across its specified voltage range. The 25LC010A-I/SN datasheet (DS21832H) confirms these values in Table 1-2, AC Characteristics.

Does the 25LC010A-I/SN support page write operations, and what is the page size?

Yes, the 25LC010A-I/SN supports page write mode with a fixed page size of 16 bytes. This allows up to 16 sequential bytes to be loaded into the page buffer before initiating the internal write cycle. Writing across a page boundary wraps data to the start of the same page - a behavior explicitly documented in DS21832H-page 6. The 25LC010A-I/SN's 128-byte array contains eight physical pages (00h–0Fh, 10h–1Fh, ..., 70h–7Fh).

How does the WP pin function on the 25LC010A-I/SN, and can it override software write protection?

The WP (Write-Protect) pin on the 25LC010A-I/SN is a hardware-level disable: when pulled low, it inhibits all write operations to both memory array and STATUS register, regardless of WEL or BP bit states. This hard lock cannot be overridden by software commands like WREN or WRSR. The 25LC010A-I/SN datasheet (DS21832H-page 13) confirms WP takes precedence per the Write-Protect Functionality Matrix in Table 2-4.

What is the endurance and data retention specification for the 25LC010A-I/SN?

The 25LC010A-I/SN guarantees 1,000,000 erase/write cycles and data retention exceeding 200 years at 25°C. These figures are measured and specified in DS21832H-page 4 (Table 1-3, item 21) and page 1 (Features section). Endurance is tested at 25°C and VCC = 5.5V; retention is extrapolated from accelerated testing per JEDEC standards.

Is the 25LC010A-I/SN RoHS compliant and Pb-free?

Yes, the 25LC010A-I/SN is Pb-free and RoHS compliant, as stated in the Features section of DS21832H-page 1. The "SN" suffix denotes the 8-lead SOIC package with matte tin (Sn) finish, conforming to JEDEC J-STD-609A Class 1 marking. Full compliance documentation is available in Microchip's packaging specification referenced in DS21832H-page 17.