Microchip Technology 24LC08BT-E/OT16KVAO

Overview

24LC08BT-E/OT16KVAO from Microchip Technology Inc. is an 8-Kbit I²C-compatible serial EEPROM organized as four 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/extended temperature support (–40°C to +125°C). It delivers 1 µA standby current and integrates hardware write-protection via the WP pin for secure configuration storage in embedded control systems.

For engineers reviewing the 24LC08BT-E/OT16KVAO datasheet, 24LC08BT-E/OT16KVAO pinout, 24LC08BT-E/OT16KVAO application, or 24LC08BT-E/OT16KVAO equivalent, this page provides verified electrical specs, SOIC-8 pin mapping, I²C timing compliance, endurance (1M cycles), and real-world use cases in power management, sensor calibration, and firmware parameter retention.

Technical Context

The 24LC08BT-E/OT16KVAO 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 write buffer, self-timed erase/write cycle, and address pointer logic supporting current-address, random, and sequential read modes.

It uses a fixed 4-bit device identifier (1010) with 2-bit block select (B1/B0) and R/W bit for addressing across its 1024-byte memory space (000h–3FFh). Write protection is enforced by tying WP to VCC, disabling all write operations while preserving read access - a feature implemented in SOIC-8 but omitted in CSP variants.

Key Specifications

Pinout & Package

24LC08BT-E/OT16KVAO is supplied in an 8-lead SOIC (SN) package with gull-wing leads, 1.27 mm pitch, and 3.90 mm body width. Pin 1 is marked with a beveled corner or notch; the exposed pad is not present in this variant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24LC08BT-E/OT16KVAO, the 24AA08T-I/OT extends low-voltage capability but sacrifices extended temperature support, while the AT24C08D-SSHM-T offers identical functionality at lower cost but excludes automotive/extended-grade reliability validation.

Availability

24LC08BT-E/OT16KVAO is available at Aetrix Electronics and suitable for power supply configuration storage, sensor calibration data retention, firmware parameter backup, and industrial PLC I/O mapping requiring stable component supply across automotive, industrial, and medical device programs.

Supply support for 24LC08BT-E/OT16KVAO 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 solutions, with global manufacturing and quality certifications including AEC-Q100 and ISO/TS 16949.

The 24LC08B family was designed for reliable, low-power nonvolatile storage in resource-constrained embedded systems where I²C bus simplicity, extended temperature operation, and hardware write protection are critical.

FAQ

What is the maximum clock frequency supported by the 24LC08BT-E/OT16KVAO?

The 24LC08BT-E/OT16KVAO supports a maximum I²C clock frequency of 400 kHz across its full operating voltage range (2.5V–5.5V) and temperature range (–40°C to +125°C). This is specified in the Device Selection Table and confirmed in Table 1-1 AC Characteristics. The part does not support 1 MHz operation - that capability is exclusive to the 24FC08 variant.

Does the 24LC08BT-E/OT16KVAO support page write operations, and what is the buffer size?

Yes, the 24LC08BT-E/OT16KVAO supports page write operations with a 16-byte page buffer. This allows up to 16 bytes to be loaded into the on-chip latch before initiating the internal write cycle. Page boundaries align to 16-byte offsets (e.g., 00h–0Fh), and crossing a boundary causes wraparound - a constraint explicitly documented in Figure 6-1 and Section 6.2.

How is hardware write protection implemented on the 24LC08BT-E/OT16KVAO?

Hardware write protection is implemented via the WP pin: when tied to VCC, the entire memory array (000h–3FFh) is write-inhibited while reads remain fully functional. When tied to VSS, normal read/write operation is enabled. This behavior is defined in Section 2.4 and Table 2-1, and applies to the SOIC-8 package used in 24LC08BT-E/OT16KVAO.

What is the endurance rating and data retention period for the 24LC08BT-E/OT16KVAO?

The 24LC08BT-E/OT16KVAO is rated for 1,000,000 erase/write cycles at 25°C and 5.5V (page mode), and guarantees data retention exceeding 200 years under normal operating conditions. These values are specified in Table 1-1 (Parameter #18) and the Features list on page 1 of DS20001710M.

Is the 24LC08BT-E/OT16KVAO AEC-Q100 qualified, and for which stress grades?

Yes, the 24LC08BT-E/OT16KVAO is AEC-Q100 qualified. As stated in the Features section on page 1, the 24XX08 family - including the 24LC08B variant - meets AEC-Q100 requirements. The "E" suffix in the part number denotes Extended temperature grade (–40°C to +125°C), which corresponds to AEC-Q100 Grade 1 qualification per the standard's thermal stress classification.