Microchip Technology 24LC014H-I/SN

Overview

24LC014H-I/SN from Microchip Technology Inc. is a 1 Kbit (128 × 8) I²C-compatible serial EEPROM with industrial temperature range (−40°C to +85°C), 2.5V–5.5V supply operation, and hardware write-protection for the upper half-array (addresses 40h–7Fh). It supports up to 1 MHz clock frequency, features Schmitt-trigger inputs and slope-controlled outputs, and delivers ≤1 μA standby current and ≤400 μA active current - ideal for low-power embedded systems requiring nonvolatile parameter storage.

For engineers reviewing the 24LC014H-I/SN datasheet, 24LC014H-I/SN pinout, 24LC014H-I/SN application, or 24LC014H-I/SN equivalent, this page provides verified electrical specifications, validated pin functions across SOIC-8 packaging, confirmed I²C timing compliance (1 MHz @ VCC ≥2.5V), and real-world use cases in firmware configuration, calibration data retention, and system ID storage.

Technical Context

The 24LC014H-I/SN implements a standard two-wire I²C slave interface with fixed 7-bit address prefix '1010' and three programmable chip-select bits (A2–A0), enabling up to eight devices on one bus. Its internal architecture includes an address pointer, page buffer (16-byte depth), and HV generator for EEPROM erase/write cycles.

Hardware write protection is implemented via the WP pin: when tied to VCC, it disables writes to addresses 40h–7Fh; when tied to VSS, full-array access is permitted. The device uses a self-timed write cycle (max 5 ms) and supports acknowledge polling to detect write completion without fixed delays.

Key Specifications

Pinout & Package

24LC014H-I/SN is supplied in 8-pin SOIC (150 mil) package per Microchip DS22077B. All pins are electrically and functionally identical across PDIP, TSSOP, MSOP, and TDFN variants.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT24C01D-SSHM-T and BR24G01NUX-5TR, the 24LC014H-I/SN uniquely combines 1 MHz speed, hardware-based half-array write-protection, and industrial temperature rating in SOIC-8 - making it optimal for space-constrained, noise-immune, high-reliability embedded systems requiring deterministic protection behavior.

Availability

24LC014H-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, long-term obsolescence management, and guaranteed traceable sourcing.

Supply support for 24LC014H-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 components, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.

The 24LC014H-I/SN belongs to Microchip's legacy serial EEPROM product line, engineered for robust, low-power nonvolatile storage in resource-constrained embedded systems across industrial, automotive, and medical applications.

FAQ

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

The 24LC014H-I/SN supports up to 1 MHz I²C clock frequency when VCC is 2.5V or higher, as specified in Table 1-2 of the DS22077B datasheet. At lower voltages (e.g., 1.7V–1.8V), the maximum clock rate drops to 100 kHz. This dual-speed capability allows the 24LC014H-I/SN to operate efficiently across both legacy 100 kHz buses and modern high-speed designs without external clock dividers.

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

The 24LC014H-I/SN uses the WP pin to enable hardware write-protection: when WP is tied to VCC, writes to memory addresses 40h–7Fh (upper 64 bytes) are blocked, while addresses 00h–3Fh remain writable. When WP is tied to VSS, full-array writes are permitted. This physical enable mechanism ensures protection remains active even if firmware fails - a key reliability feature for the 24LC014H-I/SN in safety-critical applications.

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

The 24LC014H-I/SN uses the 8-pin SOIC (Small Outline Integrated Circuit) package with 150 mil body width, as confirmed by Microchip's packaging table and marking code "SN" in DS22077B-page 14. This SOIC-8 variant is pin-compatible with PDIP, TSSOP, MSOP, and TDFN versions of the same part number, ensuring layout flexibility without functional compromise for the 24LC014H-I/SN.

Does the 24LC014H-I/SN support page write operations, and what is the buffer size?

Yes, the 24LC014H-I/SN supports page write operations with a 16-byte page buffer. This allows up to 16 consecutive bytes to be loaded into the buffer and written to memory with a single Stop condition, significantly reducing I²C transaction overhead. The buffer operates within physical page boundaries (00h–0Fh, 10h–1Fh, etc.), and crossing boundaries causes wraparound - a behavior explicitly documented for the 24LC014H-I/SN in Section 6.2.

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

The 24LC014H-I/SN guarantees 1 million erase/write cycles and 200 years of data retention at 25°C, as stated in the Features section and Table 1-1 of DS22077B. These values are characterized and ensured (not just tested), making the 24LC014H-I/SN suitable for applications requiring decades-long data integrity - such as calibration constants in test equipment or cryptographic keys in secure IoT nodes.