S29GL256P11TFIV2

Updated: 2026-08-11

Overview

The S29GL256P11TFIV2 is a 256Mb NOR Flash memory device manufactured by Infineon Technologies, targeting embedded systems with demanding reliability requirements. Utilizing 110nm MirrorBit process technology, it combines high density with low power consumption, operating at 3V for broad compatibility. The device is housed in a 56-pin TSOP package, making it suitable for space-constrained applications. As a NOR Flash memory, it offers fast random access and execute-in-place (XIP) capabilities, critical for firmware storage in automotive, industrial automation, and networking equipment. Its architecture supports a x16 data bus configuration, enabling efficient data transfer rates with a 90ns access time.

Structure and Working Principle

The S29GL256P11TFIV2 organizes memory into uniform sectors, allowing flexible erase operations (sector sizes vary by address range). It employs a floating-gate transistor design, where charge trapping determines data states (0 or 1). The MirrorBit technology stores two bits per cell, doubling density without compromising endurance. During writes, a higher voltage programs cells by electron injection, while reads use lower voltages to detect charge levels. The device integrates charge pumps for internal voltage generation, eliminating the need for external high-voltage supplies. An internal state machine automates erase and program operations, simplifying host processor interaction.

Key Features

This NOR Flash device stands out with its 100,000 erase/program cycles per sector and 20-year data retention, meeting stringent industrial longevity requirements. It supports a wide temperature range (-40°C to +85°C or +105°C for extended grades), ensuring operation in harsh environments. The hardware and software write protection features prevent accidental data corruption, while a 64-bit unique identifier enhances security. Low active current (15mA typical for reads) and deep power-down mode (<1μA) optimize energy efficiency. Compatibility with JEDEC standard commands ensures easy integration with existing systems.

Application Areas

Automotive systems leverage this memory for ECU firmware, infotainment, and ADAS due to its AEC-Q100 qualification and resistance to temperature extremes. Industrial applications include PLCs, HMI panels, and IoT gateways where reliability is paramount. In networking equipment, the S29GL256P11TFIV2 stores boot code and configuration data for routers/switches, benefiting from fast boot times. Medical devices and aerospace systems also utilize it for critical code storage where radiation-resistant variants are available. Its XIP capability eliminates RAM loading delays in real-time systems.

Maintenance and Precautions

Avoid mechanical stress on TSOP package pins during handling or installation. Use proper ESD safeguards (wrist straps, grounded workstations) as static discharge can damage memory cells. Follow the datasheet’s voltage sequencing guidelines during power-up to prevent latch-up. For firmware updates, implement wear-leveling algorithms to distribute erase cycles evenly across sectors. Monitor operating temperatures; sustained exposure beyond rated limits may accelerate aging. Periodically verify data integrity in mission-critical applications through checksums or ECC mechanisms.

B2B Procurement Guide

Purchase from Infineon-authorized distributors like Avnet, Arrow, or Future Electronics to guarantee authenticity. MOQs typically start at 100 pieces, with price breaks at 1k and 10k units. Lead times vary from stock availability to 12+ weeks for non-standard configurations. Request factory traceability documentation for automotive/medical applications. Evaluate alternative packages (e.g., BGA) if space constraints exist. Consider lifecycle status—this device has a long-term supply commitment but check for newer-generation replacements like the S29GL-T series for future-proofing designs.