Microchip Technology 24VL014H/P

Overview

24VL014H/P from Microchip Technology Inc. is a 1 Kbit (128 × 8) I²C-compatible serial EEPROM operating from 1.5V to 3.6V, featuring hardware write-protection for half-array (40h–7Fh), 400 μA max active current, and 1 μA max standby current. It supports 100 kHz (V_CC < 1.8V) or 400 kHz (V_CC ≥ 1.8V) bus speeds and is packaged in an 8-pin PDIP.

For engineers reviewing the 24VL014H/P datasheet, 24VL014H/P pinout, 24VL014H/P application, or 24VL014H/P equivalent, this device serves as a low-voltage, low-power nonvolatile memory solution for embedded systems requiring robust noise immunity, page-write buffering (up to 16 bytes), and cascading support for up to eight devices on one I²C bus.

Technical Context

The 24VL014H/P implements a true I²C slave interface with Schmitt-trigger inputs on SDA and SCL for noise suppression, internal slope control to eliminate ground bounce, and a V_CC threshold detector that disables erase/write logic below 1.0V. Its address decoding uses three user-configurable chip-select pins (A0–A2), enabling up to eight devices on a shared bus.

Write operations include byte and page modes with self-timed cycles (max 5 ms), auto-erase, and hardware write protection activated when WP = V_CC. Acknowledge polling is supported to determine write completion without fixed delays, improving bus efficiency in time-critical applications.

Key Specifications

Pinout & Package

24VL014H/P is supplied in an 8-pin Plastic Dual In-line Package (PDIP) with 300-mil body width, RoHS-compliant matte tin plating, and industrial temperature range (–20°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24LC014T-I/P and AT24C01D-SSHM-T, the 24VL014H/P uniquely delivers verified 1.5V operation, hardware half-array write protection, and Schmitt-trigger noise immunity - making it the optimal choice for ultra-low-power, safety-aware, and electrically noisy embedded designs.

Availability

24VL014H/P is available at Aetrix Electronics and suitable for smart sensor calibration, industrial PLC configuration, medical device settings, and consumer appliance state memory requiring stable component supply across extended product lifecycles.

Supply support for 24VL014H/P 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 24VL014H/P belongs to Microchip's low-voltage serial EEPROM product line, engineered specifically for battery-constrained and energy-efficient applications where reliable nonvolatile storage must operate down to 1.5V without compromising endurance or noise immunity.

FAQ

What is the minimum supply voltage required for reliable operation of the 24VL014H/P?

The 24VL014H/P operates reliably down to 1.5V V_CC, with full functionality including I²C communication, read/write operations, and hardware write protection. Below 1.5V, the internal voltage detector disables write logic to prevent data corruption, and the device enters a safe, non-operational state. This 1.5V threshold makes the 24VL014H/P ideal for single-cell alkaline or lithium primary battery systems.

How does the hardware write protection on the 24VL014H/P function, and what memory region does it cover?

The 24VL014H/P uses the WP pin to enable hardware write protection: when WP is tied to V_CC, addresses 40h–7Fh (64 bytes, or half the 128-byte array) are locked against write or erase commands. Writes to protected addresses are silently ignored - the device acknowledges the command but stores no data. This feature is independent of software control and remains active even during brown-out conditions, ensuring critical configuration data remains intact in the 24VL014H/P.

Can multiple 24VL014H/P devices share the same I²C bus, and how is device addressing managed?

Yes, up to eight 24VL014H/P devices can share one I²C bus using the A0, A1, and A2 pins to configure unique 3-bit slave addresses. Each pin must be hard-wired to V_SS or V_CC to set its logic level, forming part of the 7-bit I²C address (1010 A2 A1 A0 R/W). This allows contiguous 8 Kbit memory expansion without external multiplexers, and the 24VL014H/P automatically responds only to transactions matching its configured address bits.

What is the maximum write speed and page buffer capacity of the 24VL014H/P?

The 24VL014H/P supports page writes of up to 16 bytes per transaction, with a maximum self-timed write cycle duration of 5 ms. At 400 kHz clock speed (V_CC ≥ 1.8V), this enables sustained write throughput of ~3.2 KB/s when fully utilizing the page buffer. The internal buffer eliminates inter-byte start/stop overhead, significantly accelerating bulk configuration updates compared to byte-write mode - a key performance advantage of the 24VL014H/P in firmware update scenarios.

Does the 24VL014H/P include any built-in noise suppression features for use in electrically noisy environments?

Yes, the 24VL014H/P integrates dual noise-suppression mechanisms: Schmitt-trigger inputs on SDA and SCL pins provide hysteresis (≥ 0.05 V_CC) to reject fast transients, and a dedicated 50 ns input filter further attenuates sub-20 MHz spikes. These features ensure reliable I²C communication in industrial motor drives, automotive subsystems, or switch-mode power supply proximity - where the 24VL014H/P maintains data integrity without requiring external RC filters or ferrites.