Renesas HN58X25256FPIAG#S0

Overview

HN58X25256FPIAG#S0 from Renesas Electronics is a 256-kbit (32,768 × 8-bit) Serial Peripheral Interface (SPI) EEPROM with MONOS memory technology, supporting SPI modes 0 and 3, 3 MHz operation at 1.8 V, and 5 MHz at 2.5–5.5 V. It features 64-byte page write, 1,000k endurance cycles at 25°C, and 100-year data retention - deployed in industrial control modules for parameter storage and calibration data logging.

For engineers reviewing the HN58X25256FPIAG#S0 datasheet, HN58X25256FPIAG#S0 pinout, HN58X25256FPIAG#S0 application, or HN58X25256FPIAG#S0 equivalent, key selection considerations include its 1.8–5.5 V single-supply operation, hardware/software write protection via W and SRWD/BP bits, HOLD functionality for bus arbitration, and SOP-8 package compatibility with legacy board layouts.

Technical Context

This SPI EEPROM implements a serial interface with dual-mode clock polarity/phase support (CPOL=0, CPHA=0 and CPOL=1, CPHA=1), enabling interoperability with diverse microcontroller SPI peripherals. Its internal architecture includes a 64-byte page buffer, voltage detector for power-on reset, and status register with WIP, WEL, BP1/BP0, and SRWD bits for granular protection control.

Write operations are self-timed (5 ms min at ≥2.5 V, 8 ms at ≥1.8 V), and read operations support continuous address incrementing up to full memory wraparound. The HOLD pin enables pause/resume of ongoing transfers without chip deselection, preserving internal state across clock cycles.

Key Specifications

Pinout & Package

Package: 150-mil 8-pin plastic SOP (PRSP0008DF-B / FP-8DBV), lead-free, tape-and-reel (2,500/reel).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT25DF041A-SSH-T and M95256-DRMN6TP/K, the HN58X25256FPIAG#S0 uniquely balances 1.8 V compatibility, HOLD functionality, and MONOS-based reliability - making it optimal for cost-sensitive industrial designs requiring robustness across voltage and temperature extremes.

Availability

HN58X25256FPIAG#S0 is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive ECU configuration, and medical device settings requiring stable component supply across extended product lifecycles.

Supply support for HN58X25256FPIAG#S0 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

Renesas Electronics is a Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.

HN58X25256FPIAG#S0 belongs to Renesas' serial EEPROM product line, designed specifically for reliable, low-voltage nonvolatile storage in harsh environments where long-term data integrity and SPI bus compatibility are critical.

FAQ

What is the maximum clock frequency supported by HN58X25256FPIAG#S0 at 1.8 V?

HN58X25256FPIAG#S0 supports a maximum clock frequency of 3 MHz when operating at 1.8 V. This is specified in the AC Characteristics table for VCC = 1.8 V to 5.5 V. At voltages ≥2.5 V, the device supports up to 5 MHz. The lower frequency at 1.8 V ensures reliable timing margin under reduced drive strength.

Does HN58X25256FPIAG#S0 support both SPI mode 0 and mode 3?

Yes, HN58X25256FPIAG#S0 explicitly supports SPI mode 0 (CPOL = 0, CPHA = 0) and mode 3 (CPOL = 1, CPHA = 1), as stated in the Features section of the datasheet. This dual-mode compatibility allows seamless integration with a broad range of microcontrollers without requiring hardware modifications.

How does the HOLD function operate in HN58X25256FPIAG#S0?

In HN58X25256FPIAG#S0, the HOLD function pauses ongoing SPI communication while preserving internal state. It requires chip select (S) to be low and serial clock (C) to be low before asserting HOLD low. During HOLD, Q goes high-impedance and D/C are ignored. Resuming occurs when HOLD returns high while C remains low.

What write protection mechanisms are implemented in HN58X25256FPIAG#S0?

HN58X25256FPIAG#S0 implements two-tiered write protection: software-based via BP1/BP0 bits in the status register (configurable block protection), and hardware-based via the W pin combined with the SRWD bit. When W is low and SRWD = 1, the status register becomes read-only - locking BP bits and preventing unauthorized reconfiguration.

Is HN58X25256FPIAG#S0 compatible with standard SOP-8 footprints?

Yes, HN58X25256FPIAG#S0 uses the PRSP0008DF-B package (JEITA code FP-8DBV), a standard 150-mil 8-pin plastic SOP with 1.27 mm pitch. Its dimensions (3.90 mm × 4.89 mm) and pin layout match industry-standard SOIC-8 footprints, enabling drop-in replacement in existing PCB designs without layout changes.