Microchip Technology 24LC014-E/SN

Overview

24LC014-E/SN from Microchip Technology Inc. is a 1 Kbit I²C-compatible serial EEPROM organized as 128 × 8-bit memory, operating from 2.5V to 5.5V with 400 kHz clock support and automotive-grade temperature range (–40°C to +125°C). It features hardware write protection via the WP pin, 16-byte page write buffer, and 1,000,000 erase/write cycles - deployed in embedded systems for calibration data storage, configuration retention, and firmware parameter backup.

For engineers reviewing the 24LC014-E/SN datasheet, 24LC014-E/SN pinout, 24LC014-E/SN application, or 24LC014-E/SN equivalent, key selection considerations include its automotive temperature rating, SOT-23-6 package footprint, I²C bus address flexibility (A0/A1 configurable), and hardware write-protection behavior - all critical for robustness in automotive control modules and industrial sensor nodes.

Technical Context

The 24LC014-E/SN implements a standard two-wire I²C interface with slave-only operation, supporting Standard-mode (100 kHz) and Fast-mode (400 kHz) timing per JEDEC JESD36. Its internal architecture includes an address pointer, page buffer, HV generator for EEPROM programming, and Schmitt-trigger inputs on SDA/SCL for noise immunity.

It uses charge-pump-based high-voltage generation for byte and page writes, with self-timed internal write cycles (≤5 ms max) and automatic erase-before-write. The WP pin enables hardware-level array protection, and A0/A1 pins allow up to four devices on one bus in SOT-23 configuration - distinct from the 8-device limit in 8-pin packages due to missing A2 pin.

Key Specifications

Pinout & Package

24LC014-E/SN is supplied in a Pb-free, RoHS-compliant 6-lead SOT-23 package (3.0 mm × 1.7 mm × 1.3 mm height), optimized for space-constrained automotive PCBs. Pin 1 is laser-marked; no exposed pad. A2 pin is omitted - limiting chip-select combinations to four devices per I²C bus.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24LC014-E/SN, 24AA014-E/SN adds low-voltage operation and hardware write protection but requires layout verification for WP routing, while AT24C01D-SSHM-T offers pin-compatible SOIC-8 drop-in replacement at lower cost - yet lacks automotive qualification and SOT-23 packaging.

Availability

24LC014-E/SN is available at Aetrix Electronics and suitable for automotive body control units, industrial sensor nodes, medical infusion pumps, and smart energy meters requiring stable component supply across extended lifecycle commitments.

Supply support for 24LC014-E/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, headquartered in Chandler, Arizona, with global manufacturing and support infrastructure.

The 24LC014-E/SN belongs to Microchip's automotive-qualified serial EEPROM product line, designed specifically for reliable nonvolatile data storage in harsh-temperature, high-reliability applications such as engine control, ADAS subsystems, and industrial automation.

FAQ

What is the maximum I²C clock frequency supported by the 24LC014-E/SN?

The 24LC014-E/SN supports up to 400 kHz I²C clock frequency when VCC is ≥2.5V, meeting Fast-mode I²C specifications. At lower voltages, it defaults to 100 kHz Standard-mode operation - but since 24LC014-E/SN requires minimum 2.5V, 400 kHz is its guaranteed maximum rate. This enables faster configuration loads in time-sensitive automotive boot sequences.

Does the 24LC014-E/SN include a Write-Protect (WP) pin in the SOT-23 package?

No, the 24LC014-E/SN in SOT-23-6 package does not include a WP pin - it is physically omitted per Microchip's DS21809G datasheet Section 2.4 and Pin Function Table. Write protection must be implemented in software or via external logic. This distinguishes it from 8-pin variants (e.g., SOIC, TSSOP) where WP is present on Pin 7.

How many devices can share the same I²C bus using the 24LC014-E/SN?

Up to four 24LC014-E/SN devices can share one I²C bus, because the SOT-23 package lacks the A2 pin - leaving only A0 and A1 for chip addressing (2² = 4 combinations). Each device must have unique A0/A1 connections (VSS/VCC) to avoid address collisions; the base slave address is 1010xx0, where xx are A1/A0.

What is the write endurance and data retention specification for the 24LC014-E/SN?

The 24LC014-E/SN guarantees 1,000,000 erase/write cycles and data retention exceeding 200 years at 25°C. These values are characterized per Microchip DS21809G-page 3 (Table 1-2, Note 4) and apply across the full automotive temperature range (–40°C to +125°C), making 24LC014-E/SN suitable for long-life field-deployed systems like automotive ECUs and utility meters.

Is the 24LC014-E/SN AEC-Q100 qualified?

Yes, the "E" suffix in 24LC014-E/SN denotes Automotive grade with qualification to AEC-Q100 Rev G for stress testing, including temperature cycling, HTOL, and ESD. The device is rated for –40°C to +125°C operation and shipped in tape-and-reel per automotive logistics standards - confirmed in the Device Selection Table on DS21809G-page 2.