NXP Semiconductors PCF8582C-2T/03,112

Overview

PCF8582C-2T/03 from NXP Semiconductors (formerly Philips) is a 256 × 8-bit (2 kbit) I²C-bus EEPROM with on-chip voltage multiplier, fault-tolerant redundant storage code, and internal write timing control. It operates from 2.5 V to 6.0 V, supports up to 100 kHz I²C clock, and delivers 1,000,000 erase/write cycles at 22 °C - used for parameter storage in industrial controllers, sensor calibration modules, and legacy embedded systems requiring non-volatile memory with high reliability.

For engineers reviewing the PCF8582C-2T/03 datasheet, PCF8582C-2T/03 pinout, PCF8582C-2T/03 application, or PCF8582C-2T/03 equivalent, this page provides verified package mapping (SO8/SOT96-1), confirmed I²C timing compliance (100 kHz max), validated 8-pin functional pinout, endurance and retention specs per JEDEC conditions, and two manufacturer-validated alternative parts with documented interface and address compatibility.

Technical Context

The PCF8582C-2T/03 implements a serial EEPROM architecture with integrated I²C-bus controller logic, internal 128-divider oscillator for write timing, and 8-byte page write sequencer. Its redundant storage code enables single-bit error tolerance without external ECC circuitry.

It uses standard-mode I²C protocol only (0–100 kHz), requires external pull-up resistors on SDA/SCL, and supports up to eight devices on one bus via hardware-selectable A0–A2 address pins. The PTC pin (Pin 7) configures internal vs. external write timing and must be tied to VDD or left open.

Key Specifications

Pinout & Package

PCF8582C-2T/03 is supplied in an SO8 package (SOT96-1): plastic small outline, 8-lead, 3.9 mm body width, gull-wing leads, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar I²C EEPROM applications.

Compared with PCF8582C-2T/03, PCF8582C-2P/03 offers identical functionality in through-hole format, while AT24C02C-SSHM-T trades redundant storage and internal timing for faster I²C speed and wider distribution - making it suitable for cost-sensitive, non-safety-critical designs where firmware handles write timing.

Availability

PCF8582C-2T/03 is available at Aetrix Electronics and suitable for industrial sensor calibration, legacy microcontroller configuration, and power meter parameter storage requiring stable component supply across extended product lifecycles.

Supply support for PCF8582C-2T/03 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

NXP Semiconductors (originally Philips Semiconductors) is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications.

The PCF8582C-2T/03 belongs to NXP's legacy I²C EEPROM family designed for robust, low-power non-volatile storage in resource-constrained embedded systems where reliability under thermal stress and long-term data retention are critical.

FAQ

What is the maximum I²C clock frequency supported by the PCF8582C-2T/03?

The PCF8582C-2T/03 supports I²C standard-mode operation only, with a maximum clock frequency of 100 kHz. It does not support fast-mode (400 kHz) or high-speed mode. This limitation is defined in Section 8.1.2 of the official datasheet and confirmed by its internal oscillator design and timing specifications in Table 8. Using higher frequencies may result in communication failures or incomplete write cycles.

How many PCF8582C-2T/03 devices can share the same I²C bus?

Up to eight PCF8582C-2T/03 devices can operate on a single I²C bus. This is enabled by the three hardware-selectable address inputs (A0, A1, A2), which generate unique 3-bit device addresses. Each combination of A0–A2 logic levels defines a distinct slave address per Figure 3 and Table 5 in the datasheet, allowing 2³ = 8 independent units without address collision.

What is the function of the PTC pin (Pin 7) on the PCF8582C-2T/03?

The PTC (Programming Time Control) pin on the PCF8582C-2T/03 must be connected to VDD or left open-circuit to enable the internal oscillator for automatic write timing. Leaving it floating or tying it LOW forces external clock mode and increases standby current. Its state directly controls whether the device uses internal timing (default) or external clock synchronization for E/W cycles, as specified in Section 1 and Figure 13.

Does the PCF8582C-2T/03 require an external high-voltage supply for programming?

No, the PCF8582C-2T/03 does not require an external high-voltage supply. It integrates an on-chip voltage multiplier that generates the necessary programming voltage from the standard 2.5–6.0 V VDD rail. This feature eliminates external charge-pump circuits and simplifies board design - explicitly stated in Section 1 (Description) and Section 2 (Features) of the datasheet.

What is the data retention specification for the PCF8582C-2T/03 at industrial temperature?

The PCF8582C-2T/03 guarantees 10 years of data retention at 55 °C ambient temperature, as specified in Table 7 (Characteristics) and confirmed in Section 11. This meets industrial-grade requirements and exceeds typical consumer EEPROM retention (often rated at 40 °C). At 22 °C, retention extends significantly beyond 10 years, though exact extrapolation is not provided in the datasheet.