Winbond Electronics Corporation W25P80VSSIG

Overview

W25P80VSSIG from Winbond is an 8M-bit (1 MByte) serial Flash memory IC designed for code storage and data logging in space-constrained embedded systems. It operates on a single 2.7–3.6 V supply, supports SPI Mode 0/3 up to 50 MHz, and features 4,096 × 256-byte programmable pages with sector- and chip-erase capabilities. It is used in microcontroller-based boot code storage and firmware update applications.

For engineers reviewing the W25P80VSSIG datasheet, W25P80VSSIG pinout, W25P80VSSIG application, or W25P80VSSIG equivalent, key selection considerations include its 8-pin SOIC-208mil package, hardware write protection via /WP pin, 100,000 program/erase cycles, 20-year data retention, and Parameter Page support for configuration metadata.

Technical Context

The W25P80VSSIG implements a standard 4-wire SPI interface (CLK, /CS, DI, DO) with optional /HOLD and /WP control lines. Its internal architecture includes a 256-byte parameter page separate from main array, enabling fast (<200 ms) independent erase of configuration data without affecting firmware storage.

It uses a status register with BUSY, WEL, BP2–BP0, and SRP bits to manage write enable state and hardware/software memory protection. Block protect settings allow granular locking of upper memory portions - e.g., BP2–BP0 = 101 protects all 8M-bit memory plus parameter page - and require both /WP high and SRP = 0 to modify protection bits.

Key Specifications

Pinout & Package

W25P80VSSIG is housed in an 8-pin SOIC package with 208-mil width (Winbond package code SS). Pin assignments are standardized across the W25P80/W25P16 family for this variant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with W25P80VSSIG, W25Q80DVSSIG offers higher performance and security at the cost of firmware compatibility, while AT25DF081-SSH-T provides pin- and function-level equivalence with minimal integration effort but lacks Winbond-specific features like unified parameter page addressing.

Availability

W25P80VSSIG is available at Aetrix Electronics and suitable for boot code storage, firmware update buffering, and industrial sensor configuration requiring stable component supply across multi-year production cycles.

Supply support for W25P80VSSIG 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

Winbond Electronics is a Taiwan-based semiconductor company specializing in specialty DRAM, Flash memory, and mobile chips since 1987.

The W25P series was designed as a cost-optimized, industrial-grade serial Flash solution for microcontroller-based systems with strict pin count and power constraints - emphasizing reliability, long data retention, and seamless NexFlash migration.

FAQ

What is the maximum SPI clock frequency supported by the W25P80VSSIG?

The W25P80VSSIG supports SPI clock frequencies up to 50 MHz in both Mode 0 and Mode 3. This allows high-speed read operations such as Fast Read (0Bh) with dummy cycles, achieving effective throughput suitable for real-time firmware execution. The timing is validated across the full −40°C to +85°C operating range and 2.7–3.6 V supply, and the W25P80VSSIG datasheet specifies setup/hold margins that ensure robust communication with common microcontroller SPI peripherals.

Does the W25P80VSSIG support hardware write protection, and how is it enabled?

Yes, the W25P80VSSIG supports hardware write protection via the /WP pin in conjunction with the Status Register Protect (SRP) bit. When SRP = 1 and /WP is driven low, writes to the status register - including block protect bit changes - are disabled. This prevents accidental modification of memory protection settings during power transients or noise events. The W25P80VSSIG's /WP pin is active-low and must be pulled high (via external resistor) to allow status register updates when SRP = 1.

How many program/erase cycles does the W25P80VSSIG guarantee, and what is its data retention period?

The W25P80VSSIG guarantees 100,000 program/erase cycles per memory sector and 20 years of data retention at +25°C. These specifications are measured under standard operating conditions (2.7–3.6 V, −40°C to +85°C) and reflect end-of-life endurance for industrial applications. The W25P80VSSIG's endurance rating applies uniformly across all 4,096 pages and the dedicated 256-byte parameter page, making it suitable for frequently updated configuration storage.

What package type is used for the W25P80VSSIG, and what are its dimensions?

The W25P80VSSIG uses an 8-pin SOIC package with 208-mil body width (Winbond package code SS). Its nominal dimensions are 5.3 mm × 5.3 mm × 1.75 mm (L × W × H), with 1.27 mm lead pitch and gull-wing leads. This package is RoHS-compliant and optimized for reflow soldering. The W25P80VSSIG's pinout matches industry-standard SPI Flash footprints, enabling drop-in replacement in existing 8-pin SOIC layouts designed for compatible densities.

Can the W25P80VSSIG be used in systems requiring JEDEC-standard identification?

Yes, the W25P80VSSIG supports JEDEC-standard identification via the 9Fh instruction, returning manufacturer ID EFh (Winbond) and memory type/capacity ID 2014h. This enables automated part verification during manufacturing test and bootloader initialization. The W25P80VSSIG also supports legacy Manufacturer/Device ID (90h) and Release Power-down/Device ID (ABh) commands, ensuring compatibility with legacy firmware stacks expecting NexFlash NX25P80-equivalent responses.