Microchip Technology 24LC16BT-I/MNY

Overview

24LC16BT-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 industrial temperature range (–40°C to +85°C). It features hardware write-protection via the WP pin, Schmitt-trigger inputs for noise immunity, and 16-byte page write buffer - used in embedded system configuration storage, sensor calibration data retention, and firmware parameter backup.

For engineers reviewing the 24LC16BT-I/MNY datasheet, 24LC16BT-I/MNY pinout, 24LC16BT-I/MNY application, or 24LC16BT-I/MNY equivalent, key selection criteria include VCC min (2.5V), I²C speed grade (400 kHz), package type (8-lead SOIC with MNY suffix), write-protection behavior, and endurance (1 million cycles).

Technical Context

The 24LC16BT-I/MNY implements a two-wire I²C slave interface with fixed 7-bit address prefix '1010' and 3-bit block-select bits (B2–B0), supporting up to eight 256-word memory blocks. Its internal Address Pointer auto-increments during sequential reads and page writes, enabling efficient multi-byte transfers without repeated address retransmission.

It uses on-chip HV generator for EEPROM programming, integrates Schmitt-trigger inputs on SDA/SCL with ≥50 ns spike suppression, and employs slope-controlled outputs to minimize ground bounce. Write protection is implemented via dedicated WP pin tied to VCC (full-array lock) or VSS (enabled).

Key Specifications

Pinout & Package

24LC16BT-I/MNY is supplied in an 8-lead SOIC (Small Outline Integrated Circuit) package, designated by the /MNY suffix per Microchip's packaging table. The exposed pad is not present in SOIC; all pins are surface-mount gull-wing leads with 1.27 mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24LC16BT-I/MNY, the 24AA16T-I/MNY enables lower-voltage operation at the expense of missing 2.5V-only system compatibility, while AT24C16C-SSHM-T trades automotive qualification for wider voltage range and doubled endurance - both require validation of WP functionality and timing margins in target I²C bus topology.

Availability

24LC16BT-I/MNY is available at Aetrix Electronics and suitable for smart metering, industrial PLCs, automotive cabin controls, and medical calibration systems requiring stable component supply, long-term obsolescence management, and traceable sourcing.

Supply support for 24LC16BT-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 U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and memory products, with global design, manufacturing, and support infrastructure.

The 24LC16B family was designed for robust, low-power I²C-based configuration and calibration storage in automotive, industrial, and consumer systems requiring guaranteed write-protection and extended temperature operation.

FAQ

What is the minimum supply voltage required for reliable operation of the 24LC16BT-I/MNY?

The 24LC16BT-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 supported - unlike the 24AA16 variant, which operates down to 1.7V. This 2.5V threshold ensures proper internal charge pump function for EEPROM writes and stable I²C timing compliance at 400 kHz.

Does the 24LC16BT-I/MNY support 1 MHz I²C communication?

No, the 24LC16BT-I/MNY does not support 1 MHz I²C. Its maximum clock frequency is 400 kHz at VCC ≥ 2.5V. The 1 MHz capability is exclusive to the 24FC16 variant in the same family. Attempting 1 MHz operation with 24LC16BT-I/MNY will result in failed ACKs, data corruption, or incomplete writes due to violated timing parameters like THIGH (min 600 ns) and TLOW (min 1300 ns).

How does the WP pin function on the 24LC16BT-I/MNY, and what happens if left floating?

On the 24LC16BT-I/MNY, the WP pin must be actively driven to either VCC (write-protected) or VSS (write-enabled). If left floating, the internal state is undefined and may cause intermittent write failures or partial protection - Microchip explicitly specifies that WP "must be connected to either VSS or VCC." Reliable operation requires a hard tie, typically via 10 kΩ pull-down for default write-enable or pull-up for lock-down.

What is the physical page size and boundary alignment requirement for page writes on the 24LC16BT-I/MNY?

The 24LC16BT-I/MNY has a 16-byte physical page size, with boundaries at addresses 0x00–0x0F, 0x10–0x1F, ..., up to 0x7F0–0x7FF. Page writes crossing these boundaries wrap around within the same page - e.g., writing 16 bytes starting at 0x0F overwrites 0x0F through 0x1E, then wraps to 0x00. Application firmware must enforce alignment to avoid unintended data loss during multi-byte updates.

Is the 24LC16BT-I/MNY AEC-Q100 qualified, and what grade does it meet?

Yes, the 24LC16BT-I/MNY is AEC-Q100 qualified for Grade 3 (–40°C to +85°C), matching its industrial temperature rating. This qualification covers stress testing for automotive applications including HTOL, TCT, and ESD - confirmed in Microchip's official device documentation (DS20001703M, Section "Features"). It is suitable for cabin, chassis, and body electronics but not engine bay (Grade 1) or safety-critical ASIL domains without additional system-level validation.