Microchip Technology 24LC16BHT-I/MNY

Overview

24LC16BHT-I/MNY from Microchip Technology Inc. is a 16-Kbit I²C-compatible serial EEPROM organized as eight 256 × 8-bit blocks, operating from 2.5V to 5.5V with 400 kHz max clock frequency, 5 ms max page write time, and hardware write-protect for memory addresses 400h–7FFh. It is used in industrial control systems for storing calibration data, configuration settings, and firmware parameters.

For engineers reviewing the 24LC16BHT-I/MNY datasheet, 24LC16BHT-I/MNY pinout, 24LC16BHT-I/MNY application, or 24LC16BHT-I/MNY equivalent, key selection criteria include VCC range (2.5–5.5V), I²C timing compliance at 400 kHz, half-array write-protection capability, industrial temperature rating (−40°C to +85°C), and MNY package compatibility with SOIC-8 land patterns.

Technical Context

The 24LC16BHT-I/MNY implements a two-wire I²C slave interface with Schmitt-trigger inputs and slope-controlled outputs to suppress noise and eliminate ground bounce. Its internal architecture includes an 8-bit address pointer, 16-byte page write buffer, and HV generator for EEPROM programming.

It supports byte and page write operations, current/random/sequential read modes, and acknowledge polling to detect write cycle completion. The WP pin enables hardware-level protection of the upper 8 Kbits (400h–7FFh) when tied to VCC, while A0–A2 pins are unconnected and may be left floating.

Key Specifications

Pinout & Package

24LC16BHT-I/MNY is supplied in an 8-lead SOIC package (MNY = Microchip's SOIC-8 designation). Pin 1 is located at the top-left corner with a notch or dot marking; body width is 3.90 mm, pitch is 1.27 mm, and lead count is 8.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24AA16HT-I/MNY and AT24C16D-MAHM-T, the 24LC16BHT-I/MNY provides deterministic hardware write-protect for exactly half the memory array-a unique feature critical for separating user-modifiable and factory-locked data regions without software overhead or timing dependencies.

Availability

24LC16BHT-I/MNY is available at Aetrix Electronics and suitable for industrial control systems, power supply configuration storage, automotive body electronics, and medical device parameter retention requiring stable component supply across extended production lifecycles.

Supply support for 24LC16BHT-I/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 leading provider of microcontrollers, analog devices, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.

The 24LC16BHT-I/MNY belongs to Microchip's 24XX16H family of I²C EEPROMs, designed specifically for robust, low-power nonvolatile data storage in space-constrained industrial and automotive applications where reliability, write-protection security, and long-term data integrity are essential.

FAQ

What is the minimum supply voltage required for reliable operation of the 24LC16BHT-I/MNY?

The 24LC16BHT-I/MNY requires a minimum VCC of 2.5V for guaranteed operation across its full industrial temperature range (−40°C to +85°C). Operation below 2.5V is not specified and may result in unreliable read/write behavior or failure to acknowledge I²C transactions. This distinguishes it from the 24AA16H variant, which supports down to 1.7V.

Does the 24LC16BHT-I/MNY support 1 MHz I²C communication?

No, the 24LC16BHT-I/MNY is rated for a maximum clock frequency of 400 kHz under all specified conditions. While some 24XX16H family members like the 24FC16H support 1 MHz, the 24LC16BHT-I/MNY's AC characteristics-including THIGH, TLOW, and TR-are validated only up to 400 kHz. Attempting 1 MHz operation violates datasheet timing limits and risks data corruption.

How does the hardware write-protect function work on the 24LC16BHT-I/MNY?

When the WP pin of the 24LC16BHT-I/MNY is tied to VCC, write operations to memory addresses 400h–7FFh (upper 8 Kbits) are inhibited; reads remain fully functional. Writing to addresses 000h–3FFh (lower 8 Kbits) is still permitted. If WP is tied to VSS or left floating, full-memory write access is enabled. This hardware-based protection requires no software intervention.

Are the A0, A1, and A2 pins functional on the 24LC16BHT-I/MNY?

No, the A0, A1, and A2 pins on the 24LC16BHT-I/MNY are not internally connected and serve no functional purpose. They may be left floating, tied to VSS, or tied to VCC without affecting device operation. This differs from larger EEPROM families (e.g., 24LC256) where these pins encode I²C slave address bits.

What package type does the 'MNY' suffix indicate for the 24LC16BHT-I/MNY?

The 'MNY' suffix in 24LC16BHT-I/MNY denotes Microchip's 8-lead narrow SOIC package (SOIC-8, 3.90 mm body width), also referenced as package code 'SN' in Microchip documentation. It is compatible with standard SOIC-8 footprints and reflow profiles, and is distinct from MSOP, TSSOP, or TDFN variants offered in the same 24XX16H family.