Microchip Technology 24C01/P

Overview

24C01/P from Microchip Technology is a 1 Kbit (128 × 8) serial EEPROM with I²C-compatible 2-wire interface, 5.5 V max supply voltage, 1 MHz max clock frequency, and 1 ms typical byte-write time. It operates across -40°C to +85°C and is used in embedded systems for storing calibration data, configuration settings, and device identifiers.

For engineers reviewing the 24C01/P datasheet, 24C01/P pinout, 24C01/P application, or 24C01/P equivalent, key selection criteria include write endurance (1 million cycles), data retention (200 years), I²C address flexibility (A0–A2 pins), and PDIP-8 package compatibility with legacy board layouts.

Technical Context

The 24C01/P implements a standard I²C protocol with START/STOP conditions, 7-bit slave addressing, and ACK/NACK handshaking. It supports both random and sequential read/write operations within a single page (8 bytes) or across pages using internal address incrementing.

It features a hardware write-protect pin (WP) that disables all write operations when pulled high, and uses on-chip charge-pump circuitry to ensure reliable programming at V_CC ≥ 4.5 V without external high-voltage programming supply.

Key Specifications

Pinout & Package

24C01/P is housed in an 8-pin Plastic Dual In-line Package (PDIP) with 0.3-inch body width and through-hole mounting. Pin spacing follows standard 0.1-inch grid.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT24C01D-SSHM-T and CAT24C01WI-GT3, the 24C01/P offers proven PDIP-8 mechanical robustness and legacy compatibility but lacks extended low-voltage operation - making it ideal for fixed industrial or repairable equipment where through-hole assembly remains preferred.

Availability

24C01/P is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, and automotive body control module settings requiring stable component supply and long-term obsolescence management.

Supply support for 24C01/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 is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and memory products for embedded control applications.

The 24C01/P belongs to Microchip's legacy serial EEPROM product line, designed specifically for cost-sensitive, low-power, and space-constrained systems requiring simple, reliable nonvolatile storage.

FAQ

What is the maximum I²C clock frequency supported by the 24C01/P?

The 24C01/P supports a maximum I²C clock frequency of 1 MHz under standard operating conditions (V_CC = 4.5–5.5 V). At lower supply voltages (2.5–4.5 V), the maximum clock rate is reduced to 400 kHz to ensure timing compliance and signal integrity across varying noise margins.

Does the 24C01/P require an external high-voltage programming supply?

No, the 24C01/P does not require an external high-voltage programming supply. It integrates an on-chip charge pump that generates the necessary programming voltage internally from the standard V_CC rail (2.5–5.5 V), enabling single-supply operation and simplifying system power architecture.

How many 24C01/P devices can share the same I²C bus?

Up to eight 24C01/P devices can share the same I²C bus. This is enabled by the three hardware address pins (A0, A1, A2), each configurable as high or low, yielding 2³ = 8 unique 7-bit slave addresses (0x50–0x57) without address conflict.

What is the write endurance specification for the 24C01/P?

The 24C01/P guarantees a minimum write endurance of 1,000,000 erase/write cycles per memory location. This rating is validated per JEDEC standards and applies across the full operating temperature range (-40°C to +85°C), supporting frequent parameter updates in industrial logging applications.

Is the 24C01/P compliant with RoHS and REACH regulations?

Yes, the 24C01/P is RoHS-compliant (lead-free finish) and conforms to EU REACH SVHC requirements. Microchip certifies this part as fully compliant under its standard environmental policy, with material declarations available in the official product change notification (PCN) documentation.