GD25Q256EFIRR

GD25Q256EFIRR is a high-density serial flash memory from GigaDevice (GD25Q256E family). It provides 256 Mbit (32 MB) of non-volatile storage for firmware and data.
Key points:
- Interface: SPI-compatible with standard SPI, plus Dual I/O and Quad I/O (QPI) modes for higher throughput.
- Capacity/ organization: 256 Mb organized as 32 M × 8 bits.
- Voltage/temperature: operates at 2.7–3.6 V; industrial temperature variants available.
- Erase/Write: supports sector (4 KB), block (32 KB/64 KB) erases and full-chip erase; typical write/erase with status and protection features.
- Performance: fast read up to ~104 MHz SPI; Quad I/O can boost throughput; includes deep power-down and hold/reset features.
- Package: 8-pin package (SOP8/SOIC) variations; RoHS-compliant.
Common uses: code and data storage for microcontrollers, boot ROMs, embedded systems, and firmware updates.

Equivalents (256‑Mbit Quad SPI serial flash) from other vendors:
- Winbond W25Q256JVSSIG
- Macronix MX25L25645G
- Micron N25Q256A
- ISSI IS25LP256D
- Spansion/Cypress S25FL256S (S25FL256SD)
- Puya P25Q256H
Note: Verify package, voltage, timing, and Quad I/O support to ensure pinout and timings match GD25Q256EFIRR.

Here are the key features of GD25Q256EFIRR:
- 256 Mbit (32 MBytes) serial flash memory with SPI interface
- Read modes: standard SPI, Dual IO, Quad IO, and QPI for high-speed reads
- 4-byte addressing to access full capacity
- 256-byte page size; Page Program operation
- Erase options: 4 KB sectors; 32 KB and 64 KB blocks; Chip Erase
- High-speed read up to 104 MHz; supports fast read and other read commands
- Deep power-down mode and low-power standby
- Write protection options: hardware (BP/WP#) and software status-register protection
- Endurance and retention: typical 100k+ program/erase cycles; data retention ~20 years at 25°C
- Industrial temperature range: -40°C to +85°C
- Packaging: RoHS-compliant 8-pin package (SOP-like) suitable for embedded designs
Note: Exact voltage range and packaging options can vary by revision; this device commonly operates around 2.7–3.6V.

- Pin count: 8 pins (SOP-8)
- Function: 256‑Mbit serial flash memory with an SPI interface. Pins provide VCC, GND, CS, CLK, DI (MOSI), DO (MISO), WP, and HOLD for firmware/data storage and retrieval.

- Manufacturer: GigaDevice Semiconductor Inc. (GigaDevice)
- What kind of company: A Chinese fabless semiconductor company that designs and markets flash memory (SPI NOR/NAND) and related memory ICs; it outsources manufacturing to contract foundries.

- Firmware storage and boot memory for microcontrollers/SoCs
- Firmware updates and recovery in embedded devices
- Data logging and non-volatile storage for industrial controllers
- Configuration storage and caching for networking gear (routers, switches)
- Storage for consumer electronics (set-top boxes, TVs, cameras, printers)
- IoT/edge devices and wearables
- Automotive infotainment and ECUs needing reliable non-volatile storage
This 256-Mbit serial flash is suited for high-throughput code/data storage, fast reads, and low-power operation in embedded systems.

GD25Q256EFIRR is in an 8-pin SOP (SOIC-8) package, RoHS-compliant.