GD25Q16CEIGR

GD25Q16CEIGR is a 16‑Mbit serial Flash memory from GigaDevice. It provides non-volatile storage for embedded systems via a SPI-compatible interface. Key points:
- Density: 16 Mbit (2 MB)
- Voltage: 2.7–3.6 V
- Temperature: industrial range (-40 to 85 °C) in many variants
- Organization: 4 KB sectors; 32 KB and 64 KB blocks; chip erase
- Speed: fast Read up to about 104 MHz; supports standard SPI (and, on some variants, Dual/Quad I/O or QPI modes for higher throughput)
- Page programming: 256-byte pages with write-enable and write-protect features
- Package: 8-pin device in tape-and-reel (GR) packaging
- Applications: firmware storage, boot memory, code execution, data logging
In short, it’s a compact, low‑voltage, fast, non‑volatile memory suitable for boot/load and firmware storage in embedded systems.

Equivalent SPI NOR flash parts (16M-bit, 3.0–3.6V, SO-8, similar timing to GD25Q16CEIGR):
- Winbond W25Q16JV / W25Q16FW
- Macronix MX25L1606E
- Micron N25Q016A
- Cypress/Spansion S25FL016K
- ISSI IS25LP016D
Note: verify package, voltage, and timing for exact replacement.

GD25Q16CEIGR features (concise):
- 16 Mbit (2 MB) serial flash memory
- Voltage: 2.7–3.6 V operation
- SPI-compatible interface with Standard SPI, plus Dual I/O and Quad I/O Read modes
- High-speed read up to 104 MHz
- Page size: 256 bytes; sectors: 4 KB; blocks: 64 KB; chip erase option
- Page program capability (up to 256 bytes per operation)
- Endurance: ~100,000 erase/write cycles; data retention typically ~20 years
- Deep power-down mode and low-power operation
- Security/protection: status register with BP (block protect) bits; hardware write protection; WP pin
- Packaging: 8-pin SOP (RoHS-compliant) in suitable industrial grade
- Industrial temperature range (-40°C to 85°C)
Note: Exact timings can vary by process and mode; refer to the latest datasheet for precise figures.

- Pin count: 8 pins (8-pin package, e.g., SOIC).
- Function: 16 Mbit serial flash memory with SPI interface.
Pinout (typical SOIC-8):
- 1: CS# — Chip Select (active low)
- 2: SO — Serial Output (MISO)
- 3: WP# — Write Protect (active low)
- 4: GND — Ground
- 5: SI — Serial Input (MOSI)
- 6: SCK — Serial Clock
- 7: HOLD# — Hold (active low)
- 8: VCC — Power
Note: WP# and HOLD# are optional controls; CS, SCK, SI, SO are the core SPI signals.

- Manufacturer: GigaDevice Semiconductor Inc.
- Company type: A Chinese fabless semiconductor company that designs and markets flash memory (SPI/NOR flash) and microcontroller products, outsourcing fabrication to external foundries.

Typical applications for GD25Q16CEIGR (16-Mbit serial flash):
- Firmware storage and boot memory for microcontrollers/SoCs
- Firmware updates and data storage in embedded systems, consumer electronics, and IoT
- Non-volatile storage for configuration files, logs, and calibration data in industrial/automation and automotive electronics
- Boot flash for networking devices (routers/modems), printers, cameras, and set-top boxes
- Any system needing low-pin SPI flash memory with reliable non-volatile storage and fast read access

GD25Q16CEIGR comes in an 8‑pin SOP (SOIC) package; RoHS compliant.