Microchip Technology 24LC08BT-I/MNY

Overview

24LC08BT-I/MNY from Microchip Technology Inc. is an 8-Kbit I²C-compatible serial EEPROM organized as four 256 × 8-bit blocks, operating at 2.5V–5.5V with 400 kHz max clock frequency and industrial temperature range (−40°C to +85°C). It features hardware write-protection via the WP pin, 16-byte page write buffer, and 1 µA standby current. It is used in embedded systems for storing calibration data, configuration settings, and firmware parameters.

For engineers reviewing the 24LC08BT-I/MNY datasheet, 24LC08BT-I/MNY pinout, 24LC08BT-I/MNY application, or 24LC08BT-I/MNY equivalent, this page delivers verified electrical specs, package mapping to 8-lead SOIC (MNY), I²C timing constraints, endurance (1M cycles), and real-world use cases in power management and sensor modules.

Technical Context

The 24LC08BT-I/MNY implements a two-wire I²C interface with Schmitt-trigger inputs and slope-controlled outputs to suppress noise and eliminate ground bounce. Its internal architecture includes a 16-byte page latch, HV generator for EEPROM programming, and address pointer logic supporting current-address, random, and sequential read modes.

It supports standard-mode I²C (100 kHz) and fast-mode (400 kHz) operation, with ACK polling for write-cycle completion detection. The device uses a fixed 4-bit control code (1010) plus 2-bit block select (B1/B0) to access its four 256-word memory blocks, enabling up to 1024 bytes of addressable storage.

Key Specifications

Pinout & Package

24LC08BT-I/MNY is packaged in an 8-lead SOIC (narrow, 3.90 mm body), marked per Microchip's MNY designation. The exposed pad is not present in SOIC; all pins are surface-mount gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24LC08BT-I/MNY, the 24AA08T-I/MNY offers broader voltage flexibility but identical timing and packaging, while the AT24C08D-SSHM-T trades WP capability for automotive qualification-making each suitable for distinct voltage, safety, or protection requirements.

Availability

24LC08BT-I/MNY is available at Aetrix Electronics and suitable for industrial automation, smart metering, and embedded control systems requiring stable component supply, long-term data retention, and I²C-compatible nonvolatile storage.

Supply support for 24LC08BT-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, FPGA, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.

The 24LC08B series belongs to Microchip's legacy serial EEPROM product line, designed specifically for cost-sensitive, low-power embedded applications requiring reliable, byte-addressable nonvolatile storage with minimal board space and wiring.

FAQ

What is the maximum clock frequency supported by the 24LC08BT-I/MNY?

The 24LC08BT-I/MNY supports a maximum I²C clock frequency of 400 kHz across its full operating voltage range (2.5V–5.5V). It does not support 1 MHz operation-that capability is exclusive to the 24FC08 variant. At 400 kHz, the device achieves optimal timing margins for robust communication in electrically noisy environments typical of industrial control panels.

Does the 24LC08BT-I/MNY have hardware write protection, and how is it implemented?

Yes, the 24LC08BT-I/MNY includes a dedicated Write-Protect (WP) pin. When WP is tied to VCC, the entire 1024-byte memory array becomes read-only; all write commands (byte or page) are ignored. When WP is tied to VSS (or left floating, though not recommended), full read/write access is enabled. This hardware-level lock operates independently of I²C commands and requires no software overhead.

What package type does the 24LC08BT-I/MNY use, and what does "MNY" signify?

The 24LC08BT-I/MNY uses an 8-lead plastic small outline (SOIC) package, narrow body (3.90 mm), per Microchip's standardized marking convention. "MNY" is Microchip's internal package code denoting this specific SOIC-8 variant, confirmed in the Device Selection Table and Packaging Information section of DS20001710M. It is not a generic suffix-it uniquely identifies the SOIC packaging option for this part number.

How many memory blocks does the 24LC08BT-I/MNY contain, and how are they addressed?

The 24LC08BT-I/MNY contains four independent 256-word (256 × 8-bit) memory blocks, totaling 1024 bytes. Addressing uses a 4-bit control code (1010) followed by two block-select bits (B1, B0) in the I²C client address byte. These bits determine which 256-byte block (00 = Block 0, 11 = Block 3) is accessed, enabling logical partitioning of configuration, calibration, and runtime data.

Can the 24LC08BT-I/MNY be used in automotive applications?

No-the 24LC08BT-I/MNY is rated for industrial temperature range (−40°C to +85°C) and is not AEC-Q100 qualified. While the broader 24LC08B family includes AEC-Q100-qualified variants (e.g., 24LC08BT-E/MNY for extended temp), the "I" suffix in 24LC08BT-I/MNY explicitly denotes industrial grade only. For automotive under-hood or chassis applications, AEC-Q100-compliant alternatives such as the AT24C08D-SSHM-T should be selected instead.