Overview
GR5526 Introduction
GR5526 series is a high-performance Bluetooth 5.3 SoC that supports Bluetooth LE direction finding (AoA/AoD) and LE Audio features. For more details, please click GR5526.

- ARM® Cortex®-M4F 32-bit CPU
- Bluetooth LE 5.3 transceiver integrating Controller and Host layers
- Supported data rates: 1 Mbps, 2 Mbps, LR (500 Kbps, 125 Kbps)
- RX Sensitivity: -98 dBm (in 1 Mbps mode), -94 dBm (in 2 Mbps mode), -101 dBm (in LR 500 Kbps mode), -104 dBm (in LR 125 Kbps mode)
- TX power: -20 dBm to +7 dBm
- TX current: 4.0 mA @ 0 dBm, 1 Mbps, 96 MHz system clock
- RX current: 3.5 mA @ 1 Mbps, 96 MHz system clock
- Memory: 512 KB RAM, 1 MB SiP Flash, 8 MB SiP PSRAM (Optional)
- Supply voltage: 2.4 V to 4.35 V; I/O voltage: 1.8 V to 3.6 V
- Peripherals: QSPI, SPI, DSPI, OSPI I2S, I2C, UART, DMA, USB, ADC, PDM, PWM, Timer, GPIO, ISO7816, DC (Optional)
- Security: AES, HMAC, PKC, TRNG
- Supply voltage: 2.4 V to 4.35 V; I/O voltage: 1.8 V to 3.6 V
- Packages: BGA83, QFN68
Certification
SIG BQB Qualified in accordance with the requirements of the Bluetooth SIG.The Qualified Designs ID (QDID) for GR5526 is 179976.

Product Part Number
Part Number | Status | CPU | RAM | Flash | PSRAM | GPU + DC | I/O Number | Package | Operating Temperature |
---|---|---|---|---|---|---|---|---|---|
GR5526VGBIP | Active | Cortex®-M4F | 512 KB | 1 MB | 8 MB | Supported | 50 |
BGA83 4.3 x 4.3 mm |
-40℃~85℃ |
GR5526VGBI | Active | Cortex®-M4F | 512 KB | 1 MB | N/A | N/A | 50 |
BGA83 4.3 x 4.3 mm |
-40℃~85℃ |
GR5526RGNIP | Active | Cortex®-M4F | 512 KB | 1 MB | 8 MB | Supported | 48 |
QFN68 7.0 x 7.0 mm |
-40℃~85℃ |
GR5526RGNI | Active | Cortex®-M4F | 512 KB | 1 MB | N/A | N/A | 48 |
QFN68 7.0 x 7.0 mm |
-40℃~85℃ |
GR551x Introduction
GR551x series is a high-performance Bluetooth 5.1 SoC that is widely used in mobile devices, wearables and Internet of Things (IoT) products. For more details, please click GR551x.

- ARM® Cortex®-M4F 32-bit CPU
- Bluetooth Low Energy (LE) 5.1 transceiver integrates Controller and Host layers
- Supported data rates: 1 or 2 Mbps, Long Range 500 or 125 kbps
- Sensitivity : -97 dBm (in 1 Mbps mode), -93 dBm (in 2 Mbps mode)
- TX current: 3.05 mA @0dBm, 1 Mbps; RX current: 3.9 mA @1Mbps
- Memory: 256 KB or 128 KB RAM, 1 MB Flash for GR5515 series SoCs and 512 KB Flash for the GR5513 SoC (exceptions: GR5515I0ND/GR5515I0NDA requiring external QSPI Flash and GR5515IENDU requiring 512 KB embedded Flash)
- Supply voltage: 1.7 V to 3.8 V; I/O voltage: 1.8 V to 3.3 V (Typical)
- Peripherals: QSPI, SPI, I2S, I2C, UART, ADC, PWM, Calendar Timer, ISO7816
- Security: AES, HMAC, PKC, TRNG
- Packages: QFN56, BGA68, BGA55, QFN40
Certification
PSA Certified and gain SIG BQB Qualified in accordance with the requirements of the Bluetooth SIG.The Qualified Designs ID (QDID) for GR551x is 119449.

Product Part Number
Part Number | Status | CPU | RAM | Flash | PSRAM | GPU + DC | I/O Number | Package | Operating Temperature |
---|---|---|---|---|---|---|---|---|---|
GR5515IGND | Active | Cortex®-M4F | 256 KB | 1 MB | N/A | N/A | 39 |
QFN56 7.0 x 7.0 mm |
-40℃~85℃ |
GR5515IENDU | Active | Cortex®-M4F | 256 KB | 512 KB | N/A | N/A | 39 |
QFN56 7.0 x 7.0 mm |
-40℃~85℃ |
GR5515I0NDA | Active | Cortex®-M4F | 256 KB | N/A | N/A | N/A | 39 |
QFN56 7.0 x 7.0 mm |
-40℃~85℃ |
GR5515RGBD | Active | Cortex®-M4F | 256 KB | 1 MB | N/A | N/A | 39 |
BGA68 5.3 x 5.3 mm |
-40℃~85℃ |
GR5515GGBD | Active | Cortex®-M4F | 256 KB | 1 MB | N/A | N/A | 29 |
BGA55 3.5 x 3.5 mm |
-40℃~85℃ |
GR5513BEND | NRND | Cortex®-M4F | 128 KB | 512 KB | N/A | N/A | 22 |
QFN40 5.0 x 5.0 mm |
-40℃~85℃ |
GR5513BENDU | Active | Cortex®-M4F | 128 KB | 512 KB | N/A | N/A | 22 |
QFN40 5.0 x 5.0 mm |
-40℃~85℃ |
Hardware
GR5515 Starter Kit allows you to get familiar with GR551x-related development tools,quickly develop product prototype, and verify related functions. GR551x Hardware Design Guidelines provides recommendations for the design and development of Bluetooth LE devices.GR551x Starter Kit User Guide helps you get started with the GR5515 Starter Kit Board quickly.

PLT Board and GRPLT Lite Config Tool are proprietary hardware and software for testing GR551x offline in the production line prior to mass production

SDK
- SDK supports full functionality of Bluetooth Low Energy Stack (Bluetooth 5.1)
- Supports multiple peripherals including GPIO, Timer, WDT, I2C, UART, SPI, QSPI, ADC, I2S, ISO 7816, PWM, AES, HMAC, PKC and TRNG
- Reference examples for all Bluetooth LE device roles and GATT profiles/services
- Provides a rich set of libraries and peripheral examples
- Examples for DTM testing, and power consumption evaluation and testing
- OTA and fast DFU
- FreeRTOS
- Firmware encryption and download
- Low-power operation in sleep modes
- Debugging with J-Link RTT
- Development on Windows or Linux; toolchains of Keil, IAR, and GCC are supported

Tools
GR551x provides a variety of powerful, yet easy to use tools available for the developers.
- GProgrammer : A firmware programming tool for GR551x series.
- GRToolbox : A mobile App customized for Goodix Bluetooth Low Energy products.
- GRUart : A PC tool for debugging serial ports.
- GRPLT Lite Config Tool : A configuration tool for PLT Lite.
Documentation
Goodix offers continuous long-term support with online Documentation, including Datasheet, Design Guidelines, UserGuides, Example Files, Application Notes to get started with GR551x Bluetooth LE products.
Support
We provide a wide range of online resources that are accessible anytime, anywhere at Goodix offical website.
Get answers to the most popular Community Q&A and easily learn from others by Blogs.
- PSA
- OpenHarmony
- Tuya
- Amazon FreeRTOS
- Apple Find My
- Doc: docs@reg.goodix.com