Winbond Electronics Corporation W25P16VSFIG T&R

Overview

W25P16VSFIG T&R from Winbond is a 16M-bit (2MB) serial flash memory IC designed for code storage and data logging in space-constrained embedded systems. It operates on a single 2.7V–3.6V supply, supports SPI Modes 0 and 3 at up to 50MHz clock rate, and features 256-byte page programming with 100,000 erase/write cycles and 20-year data retention. It is used in microcontroller-based boot code storage and firmware update applications.

For engineers reviewing the W25P16VSFIG T&R datasheet, W25P16VSFIG T&R pinout, W25P16VSFIG T&R application, or W25P16VSFIG T&R equivalent, key selection considerations include SOIC-8 208-mil package compatibility, hardware write protection via /WP pin, parameter page support for configuration data, and sector-level erase granularity (64KB sectors).

Technical Context

The W25P16VSFIG T&R implements a standard 4-wire SPI interface (CLK, /CS, DI, DO) with optional /HOLD and /WP control lines. Its internal architecture includes a 8,192 × 256-byte programmable array organized into 32 erasable sectors of 64KB each, plus a dedicated 256-byte parameter page isolated from main memory.

It supports full SPI command set including Page Program (02h), Sector Erase (D8h), Chip Erase (C7h), Read Status Register (05h), and Write Status Register (01h). Protection logic combines software-configurable Block Protect bits (BP2–BP0) with hardware /WP pin control and Status Register Protect (SRP) bit for robust non-volatile memory security.

Key Specifications

Pinout & Package

W25P16VSFIG T&R is packaged in an 8-pin SOIC (208-mil width, Winbond package code SS), compatible with standard SOIC-8 footprints and reflow processes. Pin assignments are defined per Figure 1a and Table 4 of the December 2005 datasheet.

Key Features

Applications

Equivalent & Alternatives

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

Compared with W25P16VSFIG T&R, W25Q16JVSSIQ offers higher bandwidth and modern feature set at cost of driver complexity, while MX25L1606EM2I-12G provides seamless mechanical and electrical compatibility for supply chain diversification without design change.

Availability

W25P16VSFIG T&R is available at Aetrix Electronics and suitable for boot code storage, firmware update storage, and configuration data logging requiring stable component supply across industrial, medical, and consumer electronics production programs.

Supply support for W25P16VSFIG T&R 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 memory solutions, including serial flash, PSRAM, and mobile DRAM.

The W25P series was designed as a cost-optimized, pin-compatible successor to NexFlash NX25P devices for legacy embedded systems requiring proven reliability and long-term availability.

FAQ

What is the package type and dimensions of W25P16VSFIG T&R?

W25P16VSFIG T&R uses an 8-pin SOIC package with 208-mil body width (Winbond package code SS). Its dimensions are 5.3 mm × 5.3 mm × 1.75 mm, compliant with JEDEC MS-012 standards. The "VSFIG" suffix confirms this variant is the 208-mil SOIC option - distinct from the 300-mil 16-pin SOIC variant used for W25P16 in higher-pin-count configurations.

Does W25P16VSFIG T&R support Quad SPI or only standard SPI?

W25P16VSFIG T&R supports only standard 4-wire SPI (CLK, /CS, DI, DO) and does not implement Quad SPI (QPI) or Dual SPI modes. It is fully compatible with SPI Modes 0 and 3, with maximum clock frequency of 50 MHz. Quad-capable alternatives like W25Q16JV require different instruction sets and hardware interface support.

How many erase cycles does W25P16VSFIG T&R guarantee, and what is its data retention period?

W25P16VSFIG T&R guarantees 100,000 program/erase cycles per sector and 20 years of data retention at +85°C ambient temperature. These values are specified in the December 2005 datasheet Section 10.4 and reflect accelerated life testing under worst-case conditions - enabling reliable use in industrial firmware storage applications.

Can W25P16VSFIG T&R be used as a direct replacement for NexFlash NX25P16 devices?

Yes, W25P16VSFIG T&R is explicitly stated as fully compatible with NexFlash NX25P16 devices per the datasheet's General Description and Revision History. It maintains identical pinout, instruction set, timing parameters, and electrical characteristics - allowing drop-in replacement without PCB or firmware modification.

What is the function of the Parameter Page in W25P16VSFIG T&R, and how is it accessed?

The Parameter Page in W25P16VSFIG T&R is a dedicated 256-byte memory region separate from the main array, accessed via Read Parameter Page (53h), Fast Read Parameter Page (5Bh), Program Parameter Page (52h), and Erase Parameter Page (D5h) instructions. It is intended for storing device-specific metadata such as calibration data, firmware version, or configuration flags - erased independently in under 200 ms.