Microchip Technology 24VL014T/SN

Overview

24VL014T/SN from Microchip Technology Inc. is a 1 Kbit (128 × 8) I²C-compatible serial EEPROM designed for ultra-low-voltage embedded systems. It operates from 1.5V to 3.6V, draws ≤400 μA active current and ≤1 μA standby current, supports 100 kHz (at VCC < 1.8V) or 400 kHz (at VCC ≥ 1.8V) I²C bus speeds, and features hardware write protection via the WP pin. It is used in battery-powered sensor nodes for nonvolatile configuration storage.

For engineers reviewing the 24VL014T/SN datasheet, 24VL014T/SN pinout, 24VL014T/SN application, or 24VL014T/SN equivalent, key selection considerations include its 1.5V minimum operating voltage, 16-byte page write buffer, Schmitt-triggered SDA/SCL inputs for noise immunity, and cascading support for up to eight devices on one I²C bus.

Technical Context

The 24VL014T/SN implements a standard two-wire I²C slave interface with fixed 7-bit address prefix '1010' and three programmable chip-select bits (A0–A2), enabling up to eight devices on a shared bus. Its internal architecture includes a self-timed write cycle with auto-erase, a 16-byte page buffer, and a threshold-based VCC detector that disables write logic below 1.0V.

It uses Schmitt-trigger inputs on SDA and SCL with ≥50 ns spike suppression and hysteresis of 0.05×VCC, ensuring robust operation on noisy PCBs. The device supports byte and page writes, current-address/random/sequential reads, and acknowledge polling to detect write completion-no external timing components required.

Key Specifications

Pinout & Package

24VL014T/SN is supplied in an 8-pin SOIC (150 mil) package, RoHS-compliant and Pb-free. Pin 1 is marked by laser dot; body dimensions are 4.9 mm × 3.9 mm × 1.75 mm (L × W × H).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT24C01D-SSHM-T and BR24G01FJ-3GE2, the 24VL014T/SN uniquely delivers 1.5V operation, 1 μA standby, and 200-year retention - making it the only option for long-life, ultra-low-voltage embedded systems where power budget and data longevity are non-negotiable.

Availability

24VL014T/SN is available at Aetrix Electronics and suitable for smart meter calibration storage, industrial PLC configuration backup, and wearable health sensor profile storage requiring stable component supply across multi-year production cycles.

Supply support for 24VL014T/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 24VL014T/SN belongs to Microchip's low-voltage serial EEPROM product line, engineered specifically for battery-powered and energy-constrained applications where extended data retention, ultra-low quiescent current, and robust I²C interoperability are critical.

FAQ

What is the minimum operating voltage for the 24VL014T/SN?

The 24VL014T/SN operates down to 1.5V, with guaranteed functionality across its full temperature range (-20°C to +85°C). At VCC < 1.8V, the maximum I²C clock frequency is limited to 100 kHz to maintain timing margins. This 1.5V capability enables direct use with single-cell lithium or alkaline batteries without voltage boosting, distinguishing it from most competing EEPROMs rated only down to 1.7V or 1.8V.

Does the 24VL014T/SN support page writes, and what is the buffer size?

Yes, the 24VL014T/SN supports page writes with a 16-byte buffer. A single I²C transaction can load up to 16 sequential bytes into the on-chip buffer, which are then written to memory upon receipt of the Stop condition. This reduces bus overhead by up to 16× versus byte-wise writes and is especially valuable for updating configuration blocks or calibration tables in embedded systems.

How does hardware write protection work on the 24VL014T/SN?

The 24VL014T/SN uses the WP pin for hardware write protection: tying WP to VCC locks the entire memory array (addresses 00h–7Fh), preventing any write or erase operations. When WP is tied to VSS, write protection is disabled. Note that the SOT-23 variant lacks the WP pin entirely, so write protection is not available in that package - the 24VL014T/SN in SOIC retains full WP functionality.

What packages are available for the 24VL014T/SN, and what does 'T/SN' signify?

The 24VL014T/SN is packaged in an 8-pin SOIC (150 mil) with lead finish Matte Tin (Pb-free), indicated by the 'SN' suffix. The 'T' denotes tape-and-reel packaging. Other available packages include PDIP, TSSOP, MSOP, TDFN, and SOT-23 - but the T/SN variant specifically refers to the SOIC version supplied in reel format for automated assembly.

Can multiple 24VL014T/SN devices share the same I²C bus, and how many?

Yes, up to eight 24VL014T/SN devices can be cascaded on a single I²C bus using the A0, A1, and A2 pins to set unique 3-bit chip-select addresses. Each device responds only when its A0–A2 combination matches the corresponding bits in the master's control byte (1010 A2 A1 A0 R/W). This enables scalable nonvolatile storage expansion - e.g., 8 × 1 Kbit = 8 Kbit total - without additional address decoding logic.