Microchip Technology 24FC08T-E/SN36KVAO

Overview

24FC08T-E/SN36KVAO from Microchip Technology Inc. is an 8-Kbit I²C-compatible serial EEPROM organized as four 256 × 8-bit memory blocks, supporting 1 MHz clock frequency at 1.7–5.5 V supply, with 16-byte page write buffer, hardware write-protect (WP), and operation across –40°C to +125°C. It enables nonvolatile configuration storage in space-constrained industrial controllers and automotive sensor modules.

For engineers reviewing the 24FC08T-E/SN36KVAO datasheet, 24FC08T-E/SN36KVAO pinout, 24FC08T-E/SN36KVAO application, or 24FC08T-E/SN36KVAO equivalent, key selection criteria include extended temperature support, 1 MHz I²C timing compliance, WP pin functionality, SOIC-8 package footprint, and 1 μA standby current at E-temp.

Technical Context

The 24FC08T-E/SN36KVAO implements a two-wire I²C slave interface with Schmitt-trigger inputs and slope-controlled outputs to suppress noise and eliminate ground bounce. Its internal address pointer supports current-address, random, and sequential read modes, while the 16-byte page buffer enables efficient burst writes without host-side byte-by-byte overhead.

Write protection is controlled via the dedicated WP pin - tied to VSS for full read/write access or VCC to inhibit all writes while preserving read capability. The device uses self-timed erase/write cycles (max 5 ms) and features >1 million endurance cycles with >200 years data retention, validated under extended temperature stress conditions.

Key Specifications

Pinout & Package

24FC08T-E/SN36KVAO is packaged in an 8-lead SOIC (SN) narrow-body surface-mount package (3.90 mm width), with exposed pad optional per Microchip drawing C04-057-SN Rev D. Pin 1 is marked with a notch or dot; A0–A2 pins are unconnected and may be left floating or tied to VSS/VCC without functional impact.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24AA08T-I/SN and 24LC08BT-E/SN, the 24FC08T-E/SN36KVAO uniquely delivers 1 MHz I²C speed at 1.7 V minimum supply across –40°C to +125°C - enabling faster configuration loads and broader voltage compatibility in next-generation embedded designs.

Availability

24FC08T-E/SN36KVAO is available at Aetrix Electronics and suitable for automotive sensor calibration, industrial PLC configuration storage, and medical device parameter retention requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for 24FC08T-E/SN36KVAO 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 microcontroller, analog, FPGA, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.

The 24FC08 belongs to Microchip's 24XX08 family of serial EEPROMs, engineered specifically for robust, low-power nonvolatile storage in automotive, industrial, and medical applications demanding extended temperature operation and high noise immunity.

FAQ

What is the maximum I²C clock frequency supported by the 24FC08T-E/SN36KVAO?

The 24FC08T-E/SN36KVAO supports up to 1 MHz I²C clock frequency across its full 1.7 V to 5.5 V supply range and –40°C to +125°C operating temperature. This is confirmed in DS20001710L, Table 1-1 AC Characteristics, Param. No. 1 (FCLK). At 1.7 V ≤ VCC < 2.5 V, the 1 MHz rating remains valid - distinguishing it from 24AA08 (limited to 100 kHz below 2.5 V) and 24LC08B (requires ≥2.5 V).

Does the 24FC08T-E/SN36KVAO support hardware write protection, and how is it implemented?

Yes, the 24FC08T-E/SN36KVAO implements hardware write protection via the dedicated WP pin (Pin 7 in SOIC-8). When WP is tied to VCC, all write operations (byte and page) are inhibited while read access remains fully functional. This behavior is documented in Section 2.4 and Figure 6-1 of DS20001710L. The SOIC-8 package fully supports this feature.

What is the page write buffer size of the 24FC08T-E/SN36KVAO, and how does it affect write performance?

The 24FC08T-E/SN36KVAO features a 16-byte page write buffer, allowing up to 16 bytes to be loaded into the on-chip latch before initiating the internal write cycle. As stated in the Features section and Section 6.2, this reduces bus transactions by up to 16× versus byte writes, significantly improving throughput - especially in systems where configuration data exceeds single-byte granularity.

Is the 24FC08T-E/SN36KVAO qualified for automotive applications, and what certifications does it hold?

Yes, the 24FC08T-E/SN36KVAO is Automotive AEC-Q100 Qualified (Grade 1), as explicitly stated in the Features section of DS20001710L. Its extended temperature range (–40°C to +125°C) and validation under automotive stress conditions make it suitable for engine control, ADAS sensors, and body electronics where reliability under thermal cycling is mandatory.

What are the key differences between the 24FC08T-E/SN36KVAO and the 24AA08T-I/SN in terms of electrical specifications?

The 24FC08T-E/SN36KVAO differs from the 24AA08T-I/SN in three critical specs: (1) max I²C clock is 1 MHz (vs. 400 kHz), (2) operates down to 1.7 V across –40°C to +125°C (vs. 1.7 V only to +85°C), and (3) standby current is 3 μA at +125°C (vs. 1 μA at +85°C). These are verified in Tables 1-1 and 1-2 of DS20001710L.