Microchip Technology 24VL014T/MS

Overview

24VL014T/MS from Microchip Technology Inc. is a 1 Kbit (128 × 8) I²C-compatible serial EEPROM optimized for ultra-low-voltage operation down to 1.5 V, featuring 400 μA max active current, 1 μA max standby current, and hardware write protection for the full memory array (00h–7Fh). It supports 100 kHz (V_CC < 1.8 V) or 400 kHz (V_CC ≥ 1.8 V) bus speeds and integrates Schmitt-trigger inputs and output slope control for noise immunity in space-constrained industrial sensor nodes and portable medical devices.

For engineers reviewing the 24VL014T/MS datasheet, 24VL014T/MS pinout, 24VL014T/MS application, or 24VL014T/MS equivalent, key selection considerations include its 1.5–3.6 V supply range, 6-lead MSOP package with A0/A1/SDA/SCL/VSS/VCC pinout, page-write capability (up to 16 bytes), self-timed 5 ms write cycle, and hardware WP disable on SOT-23 variants - critical for battery-powered systems requiring long-term data retention (>200 years) and high endurance (1 million cycles).

Technical Context

The 24VL014T/MS implements a true two-wire I²C slave interface with fixed 4-bit control code '1010', three user-configurable chip-select bits (A0–A2), and R/W bit-driven read/write mode selection. Its internal address pointer auto-increments during sequential reads and wraps from 7Fh to 00h, enabling continuous memory access without external address management.

It uses on-chip high-voltage generation for EEPROM programming, includes a threshold detector disabling erase/write logic below 1.0 V, and employs input filtering (50 ns spike suppression) plus Schmitt-trigger hysteresis (0.05 × V_CC) on SDA/SCL to ensure robust operation on noisy PCBs - all while maintaining strict I²C timing compliance across voltage and temperature ranges (–20°C to +85°C).

Key Specifications

Pinout & Package

The 24VL014T/MS is supplied in an 8-pin MSOP package (3.0 mm × 3.0 mm × 1.0 mm body, 0.65 mm pitch), pin-compatible with standard SOIC/TSSOP footprints but with reduced footprint and thermal resistance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT24C01C-SSHM-T and BR24G01NUX-5TR, the 24VL014T/MS uniquely supports reliable 400 kHz I²C communication at 1.8 V and below, delivers the shortest write cycle (5 ms), and provides the lowest operational voltage floor (1.5 V), making it optimal for energy-constrained embedded systems where power efficiency and timing predictability are critical.

Availability

24VL014T/MS is available at Aetrix Electronics and suitable for industrial sensor calibration, portable medical device settings, IoT edge node firmware metadata, and automotive body control module NVM requiring stable component supply across extended temperature and voltage ranges.

Supply support for 24VL014T/MS 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 microcontroller, analog, FPGA, and memory solutions, headquartered in Chandler, Arizona, with global design, manufacturing, and sales operations.

The 24VL014T/MS belongs to Microchip's low-voltage serial EEPROM product line, engineered specifically for battery-powered and energy-harvesting applications demanding extended data retention, ultra-low quiescent current, and robust I²C interoperability across wide supply ranges.

FAQ

What is the minimum supply voltage required for reliable operation of the 24VL014T/MS?

The 24VL014T/MS operates reliably down to 1.5 V across its full temperature range (–20°C to +85°C). Below 1.8 V, maximum I²C clock frequency is limited to 100 kHz; above 1.8 V, it supports up to 400 kHz. The internal voltage detector disables write operations if V_CC falls below 1.0 V, preventing corrupted data writes. This makes the 24VL014T/MS ideal for direct integration with single-cell Li-ion or alkaline battery systems where voltage sag occurs during discharge.

Does the 24VL014T/MS support page write operations, and what is the buffer size?

Yes, the 24VL014T/MS supports page write operations with a 16-byte on-chip buffer. After transmitting the control byte and word address, the master can send up to 16 bytes before issuing a STOP condition - all written in a single self-timed 5 ms cycle. Page boundaries align to 16-byte increments (00h–0Fh, 10h–1Fh, etc.), and crossing a boundary causes wraparound within the same page. This capability significantly reduces I²C transaction overhead compared to byte writes, improving system-level throughput in firmware update or logging applications using the 24VL014T/MS.

How does hardware write protection function on the 24VL014T/MS, and is it available in all packages?

Hardware write protection on the 24VL014T/MS is controlled by the WP pin: tying WP to VCC disables writes to the entire memory array (00h–7Fh), while tying WP to VSS enables full read/write access. This protection is active regardless of V_CC level and persists through power cycles. However, the WP pin is not implemented in the 6-lead SOT-23 package - write operations are always enabled for that variant. The 24VL014T/MS in MSOP retains full WP functionality, making it suitable for safety-critical configurations where accidental overwrites must be physically prevented.

What is the maximum number of 24VL014T/MS devices that can be connected to a single I²C bus, and how is addressing managed?

Up to eight 24VL014T/MS devices can share one I²C bus using the three hardware address pins A0, A1, and A2. Each device's 7-bit slave address is formed as 1010xxxR/W, where xxx corresponds to the logic levels on A0–A2. These pins must be hard-wired to VSS or VCC (not left floating) to establish a unique address. For contiguous memory expansion, software may treat A0–A2 as address bits A7–A9, enabling up to 8 Kbits of linear address space - though sequential reads cannot cross device boundaries. This addressing scheme simplifies multi-device NVM architectures without requiring additional address decoding logic.

What are the key timing parameters that define I²C compatibility for the 24VL014T/MS at 400 kHz operation?

At 400 kHz and V_CC ≥ 1.8 V, the 24VL014T/MS requires: THIGH ≥ 600 ns, TLOW ≥ 1300 ns, TR/TF ≤ 300 ns, TSU:STA ≥ 600 ns, THD:STA ≥ 600 ns, TSU:DAT ≥ 100 ns, and TAA ≤ 900 ns. These values ensure full compliance with Fast-mode I²C specifications while accommodating the device's internal propagation delays. The integrated Schmitt triggers and input filters relax board-level signal integrity requirements, allowing longer trace lengths or higher bus capacitance than standard I²C slaves - a key advantage in dense PCB layouts using the 24VL014T/MS.