Microchip Technology 24C00-E/P

Overview

24C00-E/P from Microchip Technology Inc. is a 128-bit (16 × 8) I²C-compatible serial EEPROM designed for nonvolatile storage of calibration data, device IDs, and manufacturing parameters in space-constrained industrial and automotive systems. It operates at 4.5–5.5 V, supports 100 kHz/400 kHz clock rates, delivers typical read current of 500 µA, and guarantees >1 million erase/write cycles with >200 years data retention.

For engineers reviewing the 24C00-E/P datasheet, 24C00-E/P pinout, 24C00-E/P application, or 24C00-E/P equivalent, this page provides verified electrical specs, validated PDIP-8 package mapping, confirmed I²C timing compliance (including THD:STA = 4000 ns @ 4.5–5.5 V), and real-world use cases in automotive sensor modules and industrial control firmware storage.

Technical Context

The 24C00-E/P implements a slave-only I²C interface with fixed 4-bit device code '1010' and three don't-care address bits, enabling up to eight devices on one bus. Its internal address counter auto-increments during sequential reads and supports current-address, random, and sequential read modes.

It features Schmitt-trigger inputs and input filter spike suppression (TSP ≤ 50 ns) for robust noise immunity, output slope control to suppress ground bounce, and a VCC threshold detector that disables write logic below 3.8 V - ensuring reliable operation only within its specified 4.5–5.5 V supply range.

Key Specifications

Pinout & Package

24C00-E/P is supplied in an 8-lead plastic dual in-line package (PDIP) with 300-mil body width, RoHS-compliant matte tin (Sn) lead finish, and industry-standard 0.100" pitch. Pin 1 is marked by a notch or bevel on the package top edge.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24C00-E/P, the 24C01C-I/P offers scalable memory headroom within identical automotive qualification and pinout, while the AT24C01D-SSH-T trades temperature range for higher-speed I²C - making the former ideal for upgrade paths and the latter for commercial-cost optimization.

Availability

24C00-E/P is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC configuration storage, and medical device UDI serialization requiring stable component supply across extended product lifecycles.

Supply support for 24C00-E/P 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 components, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.

The 24C00-E/P belongs to Microchip's legacy 24XX00 family of ultra-low-power I²C EEPROMs, engineered specifically for reliable, long-term data retention in harsh environments - especially automotive and industrial applications demanding AEC-Q100 alignment and extended temperature operation.

FAQ

What is the maximum I²C clock frequency supported by the 24C00-E/P?

The 24C00-E/P supports up to 400 kHz I²C clock frequency when operating within its specified 4.5–5.5 V supply range and –40°C to +125°C temperature grade. This is confirmed in Table 1-2 of the DS20001178J datasheet, which lists 400 kHz as the maximum FCLK under automotive conditions. The device remains fully backward-compatible with 100 kHz buses for legacy system integration.

Does the 24C00-E/P require external pull-up resistors on SDA and SCL lines?

Yes, the 24C00-E/P requires external pull-up resistors on both SDA and SCL lines because its I/O pins are open-drain. The datasheet specifies 2 kΩ as typical for 400 kHz operation and 10 kΩ for 100 kHz. These values ensure proper signal rise times (TR ≤ 1000 ns) and noise margin while avoiding excessive bus loading - critical for stable multi-drop I²C communication in automotive harnesses.

Can the 24C00-E/P be used in place of the 24AA00 or 24LC00 in an existing design?

No - the 24C00-E/P is not a drop-in replacement for 24AA00 or 24LC00 due to incompatible supply voltage ranges: 24C00-E/P requires 4.5–5.5 V, whereas 24AA00 operates down to 1.8 V and 24LC00 down to 2.5 V. Substituting it into a low-voltage design risks functional failure or damage. Always verify VCC compliance before interchange.

How does the 24C00-E/P handle write operations during power instability?

The 24C00-E/P incorporates an internal VCC threshold detector that disables erase/write logic when supply voltage drops below 3.8 V. This prevents partial writes and data corruption during brown-out conditions - a key reliability feature for automotive applications where battery voltage fluctuates during cranking or load-dump events. No external reset supervisor is required for basic write protection.

What is the meaning of "E/P" in the part number 24C00-E/P?

In 24C00-E/P, "E" denotes the Automotive temperature grade (–40°C to +125°C), and "P" indicates the 8-lead plastic dual in-line package (PDIP). This suffix distinguishes it from other variants like 24C00-I/P (Industrial grade) or 24C00-E/SN (SOIC package). The "E/P" combination confirms full AEC-Q100 alignment and through-hole mounting compatibility for high-reliability board assembly.