GD25Q20CEIGR

GD25Q20CEIGR is a 2‑Mbit serial flash memory from GigaDevice (GD). It provides non-volatile storage for embedded systems via a simple SPI interface in an 8‑pin package.
Key points:
- Interface: SPI (no QPI), standard Read/Write/Erase commands
- Supply/Temp: 2.7–3.6 V operation, -40 to 85 C (industrial grade)
- Organization: 2,097,152 bits = 256 KB
- Features: Write Enable Latch, status register with WIP bit, page program (256 bytes), sector erase (4 KB), block erases (32 KB/64 KB), power-down modes
- Applications: boot code, configuration data, and other code/data storage for microcontroller-based designs
- Suffix: -GR indicates RoHS-compliant, lead-free packaging (tape & reel)
Note: Check the latest datasheet for exact timings, electrical characteristics, and erase sizes.

GD25Q20CEIGR is a 2 Mbit SPI NOR flash (8-pin SOP). Common drop-in equivalents:
- Winbond W25Q20CV/W25Q20BV
- Macronix MX25L2006E/DE
- Fudan Micro FM25L02B
Any 2-Mbit, 3.3V SPI-NOR with the same pinout/timing can be cross-referenced; verify package, voltage, and speed grade for your design.

Key features of GD25Q20CEIGR (2 Mb serial flash):
- Capacity: 2 Mb (256 KB) of flash memory
- Interface: SPI-compatible with Standard, Dual I/O, and Quad I/O modes
- Speed: up to 104 MHz clock; fast read options
- Organization: 256-byte page size; 4 KB sectors; 32 KB and 64 KB blocks
- Erase/Program: Sector, block, and chip erase; 1-page programming
- Endurance/Retention: ~100k P/E cycles; data retention ~20 years
- Power: low active current; deep power-down mode for standby
- Protection/Security: hardware write-protect and status/ BP bits
- Voltage: typically 2.7–3.6 V operation
- Temperature: industrial range (-40 to 85°C)
- Package/Quality: 8-pin package (RoHS-compliant) suitable for embedded designs
These summarize typical capabilities for this GD25Q20C-series part. Exact timing and protections can be confirmed in the official datasheet.

- Pin count: 8 pins (SOP-8 package).
- Function: GD25Q20C is a serial SPI flash memory (2 Mbit). Pin functions (typical SOP-8):
- 1: CS (Chip Select)
- 2: DO / MISO (Data Out)
- 3: WP# (Write Protect)
- 4: GND
- 5: DI / MOSI (Data In)
- 6: CLK (SCK)
- 7: HOLD#
- 8: VCC (Power)

- Manufacturer: GigaDevice Semiconductor Inc. (GigaDevice).
- What kind of company: A fabless semiconductor company based in China that designs and markets flash memory (NOR/NAND serial flash) and microcontroller ICs; manufacturing is outsourced to foundries.

GD25Q20CEIGR is a 2-Mbit SPI serial flash memory used to store firmware and data in embedded systems. Common application areas:
- Microcontroller firmware storage, bootloaders, and program memory
- Firmware update images and rollback storage
- Data logging and scratchpad memory in consumer electronics
- Non-volatile storage for IoT devices, wearables, sensors
- Storage for network equipment (routers, modems, set-top boxes)
- Industrial and automotive control modules
- Peripherals such as printers, cameras and audio devices

It is in an 8-pin SOP (SOIC-8) package, RoHS-compliant (tape-and-reel indicated by the suffix).