Microchip Technology 24LC014H-E/SN

Overview

24LC014H-E/SN from Microchip Technology Inc. is a 1 Kbit (128 × 8) I²C-compatible serial EEPROM with hardware write-protection for the upper half-array (40h–7Fh), rated for automotive temperature range (−40°C to +125°C), V_CC = 2.5V–5.5V, and 1 MHz clock compatibility. It supports page writes up to 16 bytes, delivers ≤1 μA standby current, and uses Schmitt-trigger inputs for noise immunity in automotive body control modules and infotainment subsystems.

For engineers reviewing the 24LC014H-E/SN datasheet, 24LC014H-E/SN pinout, 24LC014H-E/SN application, or 24LC014H-E/SN equivalent, key selection criteria include its automotive-grade endurance (1 million cycles), half-array hardware write-protect capability, 1 MHz I²C timing compliance at 2.5V+, and TSSOP-8 package suitability for space-constrained PCB layouts.

Technical Context

The 24LC014H-E/SN operates as an I²C slave device with fixed 7-bit address prefix '1010' and three user-configurable chip-select bits (A2–A0), enabling up to eight devices on one bus. Its internal address pointer auto-increments during sequential reads and wraps from 07Fh to 000h.

Write operations use an on-chip 16-byte page buffer and self-timed erase/write cycles (≤5 ms). Hardware write protection is controlled solely by the WP pin state-tied to V_CC to lock addresses 40h–7Fh-and remains active regardless of I²C command execution.

Key Specifications

Pinout & Package

24LC014H-E/SN is supplied in an 8-pin TSSOP package (3.0 mm × 4.4 mm, 0.65 mm pitch), RoHS-compliant and Pb-free. Pin numbering follows standard JEDEC MS-012 variation with exposed pad option not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT24C01C-SSHM-T, 24LC014H-E/SN adds automotive qualification and hardware WP; compared with BR24G01FJ-WE2, it offers simpler, deterministic protection but lacks programmable WP register flexibility-choice depends on whether protection must be fail-safe (hardware) or adaptable (register-based).

Availability

24LC014H-E/SN is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and consumer infotainment platforms requiring stable component supply across long production lifecycles and stringent environmental qualification.

Supply support for 24LC014H-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 design and manufacturing operations.

The 24LC014H-E/SN belongs to Microchip's automotive-qualified serial EEPROM product line, designed specifically for robust nonvolatile data storage in harsh-temperature, high-reliability embedded systems.

FAQ

What is the maximum I²C clock frequency supported by the 24LC014H-E/SN?

The 24LC014H-E/SN supports up to 1 MHz I²C clock frequency when V_CC is 2.5V or higher. At lower voltages (below 2.5V), maximum clock rate drops to 400 kHz or 100 kHz depending on V_CC level-this is specified in the AC characteristics table of the DS22077B datasheet. The 24LC014H-E/SN achieves this speed while maintaining full compatibility with standard I²C protocol timing requirements.

How does the hardware write-protection feature work on the 24LC014H-E/SN?

The 24LC014H-E/SN implements hardware write-protection via the WP pin: when tied to V_CC, it permanently locks memory addresses 40h–7Fh (64 bytes, upper half-array) against all write and page-write commands. Writes to unprotected addresses (00h–3Fh) remain fully functional. This protection persists even during active I²C communication and cannot be overridden by software-ensuring fail-safe integrity for critical configuration data stored in the protected region.

What package type is used for the 24LC014H-E/SN variant?

The 24LC014H-E/SN uses an 8-pin TSSOP package (3.0 mm × 4.4 mm body, 0.65 mm lead pitch), designated by the '/SN' suffix per Microchip's packaging nomenclature. This surface-mount package provides thermal and mechanical reliability for automotive reflow profiles and meets JEDEC MO-153 standards. Pinout matches standard 8-pin SOIC but with reduced footprint for high-density PCB layouts.

Does the 24LC014H-E/SN require external pull-up resistors on SDA and SCL lines?

Yes, the 24LC014H-E/SN requires external pull-up resistors on both SDA and SCL lines because its I²C interface uses open-drain outputs. For 1 MHz operation, a 2 kΩ pull-up to V_CC is recommended per Microchip's datasheet guidance; for 100 kHz, 10 kΩ is typical. These resistors ensure proper logic high levels and meet rise-time specifications (≤300 ns at 1 MHz) defined in the AC characteristics table.

What is the endurance rating and data retention specification for the 24LC014H-E/SN?

The 24LC014H-E/SN is rated for 1 million erase/write cycles at 25°C and V_CC = 5.5V, with data retention exceeding 200 years at 85°C. These specifications are validated per Microchip's characterization methodology and apply across the full automotive temperature range (−40°C to +125°C). Endurance is measured using block-mode cycling, and retention assumes typical operating conditions without exposure to extreme radiation or electrical overstress.