Microchip Technology 24VL014HT/MNY

Overview

24VL014HT/MNY 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/400 kHz clock rates, and features hardware write-protection for the upper half-array (40h–7Fh). It is used in battery-powered sensor nodes and portable medical devices requiring nonvolatile memory with minimal power overhead.

For engineers reviewing the 24VL014HT/MNY datasheet, 24VL014HT/MNY pinout, 24VL014HT/MNY application, or 24VL014HT/MNY equivalent, key selection criteria include its 1.5V minimum VCC, Schmitt-triggered SDA/SCL inputs for noise immunity, 16-byte page write buffer, self-timed 5 ms write cycle, and cascading support for up to eight devices on one I²C bus.

Technical Context

The 24VL014HT/MNY implements a standard I²C slave interface with fixed 4-bit control code (1010b), three user-configurable chip-select address bits (A0–A2), and R/W bit-driven operation mode. Its internal architecture includes an address pointer, page buffer, HV generator for EEPROM programming, and write-protect logic tied to the WP pin state.

It uses low-power CMOS process technology with Schmitt-trigger inputs on SDA and SCL (≥0.05×VCC hysteresis), slope-controlled outputs to suppress ground bounce, and a VCC threshold detector that disables erase/write below 1.0V. The device supports byte and page write modes, current/random/sequential read modes, and acknowledge polling for write-cycle completion detection.

Key Specifications

Pinout & Package

24VL014HT/MNY is packaged in an 8-pin TDFN (2 mm × 3 mm × 0.75 mm) with wettable flanks, RoHS-compliant matte tin finish, and marked "24VL014H" + date code. Pin 1 is top-left corner (A0), with pin 1 indicator dot located near A0.

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 24VL014HT/MNY uniquely delivers 1.5V operation, 1 μA standby, 1M-cycle endurance, and 200-year retention - making it the only option qualified for multi-decade, battery-constrained deployments.

Availability

24VL014HT/MNY is available at Aetrix Electronics and suitable for smart metering, portable diagnostics, industrial PLCs, automotive body control units, and battery-powered IoT edge sensors requiring stable component supply across extended product lifecycles.

Supply support for 24VL014HT/MNY 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 U.S.-based semiconductor company specializing in microcontrollers, analog devices, and memory products, with global manufacturing and quality certifications including ISO 9001 and AEC-Q200.

The 24VL014HT/MNY belongs to Microchip's VL-series ultra-low-voltage EEPROM family, engineered specifically for energy-constrained applications where operation below 1.8V and sub-microamp standby are essential design requirements.

FAQ

What is the minimum operating voltage for the 24VL014HT/MNY?

The 24VL014HT/MNY operates down to 1.5V across its full industrial temperature range (–20°C to +85°C). Below 1.8V, the maximum I²C clock frequency is limited to 100 kHz to maintain timing margin; above 1.8V, it supports 400 kHz. This 1.5V capability allows direct integration with single-cell LiFePO₄ or alkaline batteries without voltage boosting.

How does hardware write protection work on the 24VL014HT/MNY?

On the 24VL014HT/MNY, the WP pin controls hardware write protection: when tied to VCC, addresses 40h–7Fh (upper half of the 128-byte array) are locked against write or erase operations. When WP is tied to VSS, full-array access is enabled. Protection is active immediately upon power-up and persists through reset - no software command is required to activate it.

Can multiple 24VL014HT/MNY devices share the same I²C bus?

Yes, up to eight 24VL014HT/MNY devices can be cascaded on a single I²C bus using the A0, A1, and A2 address pins. Each device is assigned a unique 3-bit chip-select code (e.g., 000 to 111), resulting in distinct slave addresses (1010xxx0/1). This enables contiguous 8 Kbit expansion without additional address decoding logic or bus multiplexers.

What is the write cycle time for the 24VL014HT/MNY, and how is it managed?

The 24VL014HT/MNY has a self-timed write cycle of up to 5 ms for both byte and page writes. During this period, the device does not acknowledge I²C commands. Engineers use acknowledge polling - repeatedly sending a Start + Write control byte - to detect completion: the device responds with ACK once the internal write/erase sequence finishes.

Does the 24VL014HT/MNY support page writes, and what is the buffer size?

Yes, the 24VL014HT/MNY supports page writes with a 16-byte buffer. After transmitting the word address, the master may send up to 16 bytes before issuing a Stop condition; the device stores them in the buffer and writes the entire page in one internal cycle. Page boundaries align to 16-byte offsets (00h–0Fh, 10h–1Fh, etc.), and crossing boundaries causes wraparound within the current page.