W25R128JWPIQ

W25R128JWPIQ is Winbond’s 128-Mbit serial NOR flash memory (W25R series) designed for firmware and data storage in embedded systems. It uses an SPI-compatible interface with options for Dual/Quad I/O and QPI, in a compact WPIQ package. Capacity is 16 MB, accessed with a 3-byte (24-bit) address (0x000000–0x1FFFFF). Key operations include page programming (usually 256 bytes), sector erase (4 KB) and bigger block erases (64 KB/256 KB). Features commonly supported: Write Enable/Disable, status and protection registers, Deep Power-Down with wake, Read ID, fast/continuous read, and security/block protection options. Voltage range is typically 2.7–3.6 V. Endurance is typical of serial NOR flash in the 100k+ program/erase cycles range, with long data retention. Applications include boot firmware storage, code/data storage, and other non-volatile storage needs in microcontrollers, microprocessors, and FPGAs. For exact timing, commands, pinout, and package variants (including WPIQ), consult the official Winbond datasheet.

Equivalent products (128-Mbit SPI flash, similar interface):
- Winbond W25Q128JV/JW
- Macronix MX25R128F
- GigaDevice GD25Q128B
- Spansion S25FL128P
- ISSI IS25LP128D
- ESMT EN25Q128A
- Puya P25Q128
Note: check package, operating voltage, timing, and thermal specs for true cross-compatibility.

Key features of W25R128JWPIQ:
- 128-megabit (16 MB) serial flash memory
- 2.7V–3.6V operation; industrial options available
- 4-byte addressing for large memory space
- Interfaces: SPI, Dual I/O, Quad I/O, and QPI modes
- High-speed: up to 104 MHz SPI; fast Quad I/O/QPI reads
- Memory organization: 256-byte page size; 4 KB sectors; 64 KB / 256 KB blocks
- Power modes: deep power-down; low current standby
- Security and protection: WP#/HOLD# pins; sector/block protection with software options
- Endurance and retention: ~100k P/E cycles; data retention ~20 years (at 25°C)
- 64-bit unique ID and standard JEDEC command set
- Packaging: 8-pin options (e.g., SOIC/WSON) as indicated by PIQ suffix
- Temperature range: typical -40°C to 85°C (industrial variants may extend higher)
Note: exact block/sector configurations and max speeds can vary by package/grade; consult datasheet for precise specs.

- Pin count: 8 pins (8-pin package, e.g., SOIC)
- Function: 128-Mbit serial NOR flash memory (Winbond W25R128J family) with SPI-compatible interface (supports single/dual/quad I/O SPI). Pin names typically: CS_n, CLK, DI, DO, WP_n, HOLD_n, VCC, GND.

- Manufacturer: Winbond Electronics Corporation (Winbond).
- What kind of company: A Taiwanese semiconductor company that designs and manufactures memory chips (e.g., serial flash and DRAM), operating as an integrated device manufacturer (IDM) with its own fabrication facilities and global operations.

W25R128JWPIQ is a 128-Mbit serial NOR flash from Winbond (Quad/Dual SPI, QPI). It serves as external program/firmware storage and boot memory for MCUs/SoCs. Typical applications: embedded/IoT devices (routers, gateways, set‑top boxes, printers, cameras, wearables); automotive ECUs and infotainment; industrial controllers and data loggers; medical devices needing reliable nonvolatile storage; any system requiring high-throughput, low-power firmware updates and XIP execution.

8-pin SOP (SOIC-8) package.