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Documentation > GR551x Datasheet/ GR551x Overview Copy URL

GR551x Overview

The Goodix GR551x family is a single-mode, low-power Bluetooth 5.1 System-on-Chip (SoC). It can be configured as a Broadcaster, an Observer, a Central, or a Peripheral and supports the combination of all the above roles, making it an ideal choice for Internet of Things (IoT) and smart wearable devices.

Based on ARM® Cortex®-M4F CPU core, the GR551x integrates Bluetooth 5.1 Protocol Stack, a 2.4 GHz RF transceiver, on-chip programmable Flash memory, RAM, and multiple peripherals.

The GR551x series includes GR5515IGND, GR5515RGBD, GR5515GGBD, GR5513BEND and GR5515I0ND.

Table 1 GR551x series
GR551x Series GR5515IGND GR5515RGBD GR5515GGBD GR5513BEND GR5515I0ND
CPU Cortex®-M4F Cortex®-M4F Cortex®-M4F Cortex®-M4F Cortex®-M4F
RAM 256 KB 256 KB 256 KB 128 KB 256 KB
Flash 1 MB 1 MB 1 MB 512 KB N/A
Package (mm)


(7 x 7 x 0.75)


(5.3 x 5.3 x 0.88)


(3.5 x 3.5 x 0.60)

QFN40 (5 x 5 x 0.75)


(7 x 7 x 0.75)

I/O Number 39 39 29 22 39

The GR5515RGBD is not recommended for new designs.

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