W25Q128JVCIQ

W25Q128JVCIQ is Winbond’s 128‑Mbit serial flash memory. It provides SPI-compatible storage for firmware, data, or boot code in embedded systems.
Key points
- Density and interface: 128 Mbit (16 MB) with SPI, supporting standard SPI and dual/quad I/O modes for higher throughput.
- Voltage and temperature: typically 2.7–3.6 V; industrial temperature range (-40°C to +85°C).
- Memory organization: 16,777,216 bytes total; 256-byte pages; 4 KB sectors; 32 KB and 64 KB blocks; chip erase available.
- Speed: high-speed/dual/quad read up to about 104 MHz.
- Programming/erasing: Page program (up to 256 bytes); sector/block/Chip erase; Write Enable Latch (WEL) and Write-In-Progress (WIP) status.
- Protections and features: status/config registers, block protection, Quad Enable (QE) for Quad I/O, low-power modes.
- Package and use: commonly available in 8-pin packages (e.g., SOIC/WSON variants); suitable for firmware storage, boot flash, and data logging in microcontroller-based designs.

Equivalents (128-Mbit SPI NOR Flash) include:
- Macronix MX25L12845G, MX25L12835F
- GigaDevice GD25Q128CSIG / GD25Q128C
- Cypress/Spansion S25FL128S
- ISSI IS25LP128D
- Puya P25Q128
Note: check voltage, timing, and packaging compatibility for your design.

W25Q128JVCIQ is a Winbond 128‑Mbit serial flash memory. Key features:
- Density: 128 Mbit (16 MB) with 24‑bit addressing.
- Interface: SPI‑compatible; supports Standard SPI, Dual I/O and Quad I/O modes.
- Voltage: 2.7–3.6 V operation.
- Speed: Fast Read up to 104 MHz (high throughput with Quad I/O).
- Organization: 256‑byte pages; 4 KB sectors; 64 KB blocks; chip erase.
- Endurance/Retention: ~100,000 write/erase cycles; data retention around 20 years.
- Protection: Sector/Block protection with BP bits; WP#/HOLD# pins for security and protection.
- Power modes: Deep Power‑Down and low‑power standby.
- Package/Temp: 8‑pin package; industrial temp range typical (-40°C to +85°C; some variants offer broader ranges).
Applications: code boot/backup memory, microcontroller storage, and firmware updates where fast, non‑volatile storage is needed.

Pin count: 8 pins (SOP-8/SOIC-8).
Function: 128 Mbit serial NOR flash memory with SPI interface (stores firmware/data). Typical pins: VCC, GND, CS (chip select), CLK (serial clock), DI/MOSI, DO/MISO, HOLD, WP (write protect, active-low).

- Manufacturer: Winbond Electronics Corp.
- What kind of company: A Taiwanese semiconductor company that designs, manufactures, and markets memory ICs (non-volatile flash memory and DRAM); a global supplier of memory products for electronics.

Applications of W25Q128JVCIQ (128 Mbit serial flash):
- Firmware/code flash for microcontrollers in embedded systems (bootloader and application code; execute-in-place where supported; up to ~16 MB).
- Firmware updates and data logging for IoT devices (sensors, cameras, gateways, routers).
- Asset storage for consumer electronics (fonts, graphics, LUTs, thumbnails in TVs, printers, set-top boxes).
- Non-volatile storage for industrial and networking equipment (PLC, routers, switches, controllers).
- General-purpose, cost-effective flash memory for applications needing reliable non-volatile storage.

An 8-pin SOP (SOIC) package, RoHS-compliant, industrial-temperature version (-40°C to +85°C).