YeaCreate-RK3326S Core Board
Features and Applications
- The Core-RK3326-S module is built around four Cortex-A35 cores running at up to 1.5 GHz, featuring an optimized cache hierarchy to balance performance power efficiency.
- DDR4/DDR3/DDR3L/LPDDR3/LPDDR2.
- 1080P H.265/H.264/VC-1/MPEG/VP8 Video Decoder.
- 1080P H.264/VP8 Video Encoder.
- LVDS/MIPI-DSI/RGB Interface.
- 1x 8-channel I2S/TDM interface, 1x 8-channel PDM interface, and 2x 2-channel I2S interfaces.
- It supports mainstream operating systems such as Android, Debian, and Ubuntu, as well as Buildroot-based embedded systems, ensuring adaptability for different application scenarios.
- Designed with a cord board and carries board architecture, the core board serves as the minimum system, while the carrier board handles peripheral interfaces. This allows for rapid development and verification using only a 2 - 4 layer carrier board.
- The core board supports fast customization with different capacities of DRAM or EMMC.
- The core board has been adapted with over 10 types of Wi-Fi modules.
- A reserved shield case interface is provided for reliable operation in harsh environments.
- The standard configuration includes 1GB RAM and 32GB storage.
Functional Block Diagram
The RK3326S-V02 Standard Core Board utilizes the RK3326-S as its main CPU, The functional block diagram of the chip is shown below:

Applications

Mechanical Dimensions
Top View
Bottom View
Dimensions
| Width |
50mm |
| Length |
69.5mm |
| Tolerance |
±0.5mm |
Basic Parameters
The basic parameters are listed in the table below:
| Name |
Description |
| SoC |
Rockchip RK3326-S |
| CPU |
Quad-core 64-bit Cortex-A35 processor, up to 1.5 GHz |
| GPU |
Mali-G31 2EE GPU Support OpenGL ES3.2, Vulkan 1.0, OpenCL 2.0 Embedded high-performance 2D graphics acceleration hardware. |
| Multimedia |
Multi-format 1080p @ 60 fps video decoding (H.265, H.264, VC-1, MPEG-1/2/4, VP8). 1080p video encoding , support H.264, VP8. |
| Memory |
LPDDR4/LPDDR4x,default 1GB |
| Storage |
EMMC, default 32GB |
| Display Interface |
Supports RGB, LVDS, and MIPI-DSI interfaces with a maximum resolution of 1920×1080. |
| Audio Interface |
1 × HPR/L, Stereo Headphone Output 1 × SPK 1 × MIC Microphone Inputs |
| USB |
1 × USB2.0 OTG |
| Expansion Connector |
4 × UART 2 × SPI 3 × I2C 2 × I2S PCM(2ch) 1 × I2S TDM(8ch) 1 × SDIO 2 × PWM 1 × ADC |
Core Board Functions
| NO. |
Description |
| 1 |
IPEX Gen 1 Connector |
| 2 |
RK3326S BOOT Button |
| 3 |
RK3326S Reset Button |
Pin Configuration and Functions
Core Board Interface – Odd Pin Definitions (Refer to the SoC Datasheet for detailed pin multiplexing functions.)
| Pin No. |
Connector Label |
Description |
| 1 |
GND |
GND |
| 3 |
GND |
GND |
| 5 |
GND |
GND |
| 7 |
SYS_5V0 |
SYS_5V0 |
| 9 |
SYS_5V0 |
SYS_5V0 |
| 11 |
SYS_5V0 |
SYS_5V0 |
| 13 |
SYS_5V0 |
SYS_5V0 |
| 15 |
SYS_5V0 |
SYS_5V0 |
| 17 |
SYS_5V0 |
SYS_5V0 |
| 19 |
SYS_5V0 |
SYS_5V0 |
| 21 |
SYS_5V0 |
SYS_5V0 |
| 23 |
- |
- |
| 25 |
- |
- |
| 27 |
GND |
GND |
| 29 |
GND |
GND |
| 31 |
GND |
GND |
| 33 |
VCC3V3_SYS |
VCC3V3_SYS |
| 35 |
VCC3V3_SYS |
VCC3V3_SYS |
| 37 |
VCC3V3_SYS |
VCC3V3_SYS |
| 39 |
- |
- |
| 41 |
- |
- |
| 43 |
- |
- |
| 45 |
VCC_3V0 |
VCC_3V0 |
| 47 |
VCC_3V0 |
VCC_3V0 |
| 49 |
- |
- |
| 51 |
- |
- |
| 53 |
- |
- |
| 55 |
GND |
GND |
| 57 |
- |
- |
| 59 |
- |
- |
| 61 |
- |
- |
| 63 |
- |
- |
| 65 |
- |
- |
| 67 |
- |
- |
| 69 |
GND |
GND |
| 71 |
CIF_CLKI |
GPIO2_B2_d |
| 73 |
GND |
GND |
| 75 |
CAM_CLKO |
GPIO2_B3_d |
| 77 |
GND |
GND |
| 79 |
CIF_D9 |
GPIO2_A7_d |
| 81 |
CIF_D8 |
GPIO2_A6_d |
| 83 |
CIF_VSYNC |
GPIO2_B0_d |
| 85 |
CIF_HREF |
GPIO2_B1_d |
| 87 |
CIF_D2 |
GPIO2_A0_d |
| 89 |
CIF_D5 |
GPIO2_A3_d |
| 91 |
CIF_D7 |
GPIO2_A5_d |
| 93 |
CIF_D4 |
GPIO2_A2_d |
| 95 |
CIF_D6 |
GPIO2_A4_d |
| 97 |
CIF_D3 |
GPIO2_A1_d |
| 99 |
GND |
GND |
| 101 |
USB_OTG_DM |
USB_OTG_DM |
| 103 |
USB_OTG_DP |
USB_OTG_DP |
| 105 |
GND |
GND |
| 107 |
USB_OTG_ID |
USB_ID |
| 109 |
USB_DET |
USB_VBUS |
| 111 |
GND |
GND |
| 113 |
I2S1_SCLK |
GPIO2_C2_d |
| 115 |
I2S1_MCLK |
GPIO2_C3_d |
| 117 |
I2S1_LRCK_TXRX |
GPIO2_C1_d |
| 119 |
I2S1_SDO |
GPIO2_C4_d |
| 121 |
GND |
GND |
| 123 |
SDMMC0_D3/JTAG_TMS |
SDMMC0 Data 3 |
| 125 |
SDMMC0_D2/JTAG_TCK |
SDMMC0 Data 2 |
| 127 |
SDMMC0_CMD |
SDMMC0 Command Signal |
| 129 |
SDMMC0_D1/UART2_RX |
SDMMC0 Data1 |
| 131 |
SDMMC0_D0/UART2_TX |
SDMMC0 Data 0 |
| 133 |
SDMMC0_CLK |
SDMMC0 Clock Signal |
| 135 |
SDMMC0_DET |
GPIO0_A3 |
| 137 |
GND |
GPIO0_A3 |
| 139 |
I2C1_SCL |
I2C1 Clock Signal |
| 141 |
I2C1_SDA |
I2C1 Data Signal |
| 143 |
GND |
GND |
| 145 |
GND |
GND |
| 147 |
GND |
GND |
| 149 |
GND |
GND |
| 151 |
GND |
GND |
| 153 |
GND |
GND |
| 155 |
GND |
GND |
| 157 |
GND |
GND |
| 159 |
GND |
GND |
| 161 |
GND |
GND |
| 163 |
GND |
GND |
| 165 |
LCDC_BL_PWM |
GPIO0_C0_d |
| 167 |
- |
- |
| 169 |
- |
- |
| 171 |
- |
- |
| 173 |
- |
- |
| 175 |
- |
- |
| 177 |
ADC0_HW_ID |
ADC_IN0 |
| 179 |
GND |
ADC_IN0 |
| 181 |
PHONE_DET |
GPIO1_B5 |
| 183 |
VCC18_LCD_EN |
GPIO1_B7 |
| 185 |
SPK_CTL_H |
GPIO1_B6 |
| 187 |
FLASH_CLE |
GPIO1_B4_d |
| 189 |
GND |
GND |
| 191 |
BT_PCM_CLK |
GPIO3_A2_d |
| 193 |
LCDC_D12 |
GPIO3_C0_d |
| 195 |
LCDC_D13 |
GPIO3_C1_d |
| 197 |
LCDC_D15 |
GPIO3_C3_d |
| 199 |
LCDC_D14 |
GPIO3_C2_d |
| 201 |
LCDC_D17 |
GPIO3_C5_d |
| 203 |
LCDC_D6 |
GPIO3_B2_d |
| 205 |
LCDC_D16 |
GPIO3_C4_d |
| 207 |
GND |
GND |
| 209 |
LVDS_MIPI_TXD0P |
LVDS_MIPI_TXD0P |
| 211 |
LVDS_MIPI_TXD0N |
LVDS_MIPI_TXD0N |
| 213 |
GND |
GND |
| 215 |
LVDS_MIPI_TXD1P |
LVDS_MIPI_TXD1P |
| 217 |
LVDS_MIPI_TXD1N |
LVDS_MIPI_TXD1N |
| 219 |
GND |
GND |
| 221 |
LVDS_MIPI_TXCLKP |
LVDS_MIPI_TXCLKP |
| 223 |
LVDS_MIPI_TXCLKN |
LVDS_MIPI_TXCLKN |
| 225 |
GND |
GND |
| 227 |
LVDS_MIPI_TXD2P |
LVDS_MIPI_TXD2P |
| 229 |
LVDS_MIPI_TXD2N |
LVDS_MIPI_TXD2N |
| 231 |
GND |
GND |
| 233 |
GND |
GND |
| 235 |
GND |
GND |
| 237 |
GND |
GND |
| 239 |
GND |
GND |
| 241 |
GND |
GND |
| 243 |
GND |
GND |
| 245 |
GND |
GND |
| 247 |
GND |
GND |
| 249 |
GND |
GND |
| 251 |
GND |
GND |
| 253 |
GND |
GND |
| 255 |
GND |
GND |
| 257 |
GND |
GND |
| 259 |
GND |
GND |
Core Board Interface – Even Pin Definitions (Refer to the SoC Datasheet for detailed pin multiplexing functions.)
| Pin No. |
Connector Label |
Description |
| 2 |
GND |
GND |
| 4 |
GND |
GND |
| 6 |
GND |
GND |
| 8 |
GND |
GND |
| 10 |
SPKP_OUT |
SPK+ Speaker Positive Output |
| 12 |
SPKN_OUT |
SPK- Speaker Negative Output |
| 14 |
GND |
GND |
| 16 |
GND |
GND |
| 18 |
MIC2_IN |
MIC2- MIC2 Negative Input |
| 20 |
MIC1_IN |
MIC1+ MIC1 Positive Input |
| 22 |
GND |
GND |
| 24 |
HPR |
Headphone Right Channel Output |
| 26 |
HPL |
Headphone Left Channel Output |
| 28 |
HP_SNS |
HP_SNS |
| 30 |
GND |
GND |
| 32 |
- |
- |
| 34 |
- |
- |
| 36 |
- |
- |
| 38 |
GND |
GND |
| 40 |
GND |
GND |
| 42 |
GND |
GND |
| 44 |
GND |
GND |
| 46 |
GND |
GND |
| 48 |
GND |
GND |
| 50 |
GND |
GND |
| 52 |
GND |
GND |
| 54 |
VCC1V8_DVP |
VCC1V8_DVP |
| 56 |
VCC2V8_DVP |
VCC2V8_DVP |
| 58 |
VDD1V5_DVP |
VDD1V5_DVP |
| 60 |
RESET |
RESET |
| 62 |
ADC1_HP_HOOK |
ADC1_HP_HOOK |
| 64 |
ADC2_KEY_IN |
ADC2_KEY_IN |
| 66 |
GND |
GND |
| 68 |
- |
- |
| 70 |
GND |
GND |
| 72 |
GPIO2_B4 |
GPIO2_B4_d |
| 74 |
I2C2_SDA_CAM |
I2C2 Data Signal |
| 76 |
CAM_PDN0 |
GPIO2_B6_d |
| 78 |
CAM_PDN1 |
GPIO2_B5_d |
| 80 |
I2C2_SCL_CAM |
I2C2 Clock Signal |
| 82 |
GND |
GND |
| 84 |
- |
- |
| 86 |
- |
- |
| 88 |
- |
- |
| 90 |
- |
- |
| 92 |
GND |
GND |
| 94 |
MIPI_CSI_D2P |
MIPI_CSI_D2P |
| 96 |
MIPI_CSI_D2P |
MIPI_CSI_D2P |
| 98 |
GND |
GND |
| 100 |
- |
- |
| 102 |
- |
- |
| 104 |
GND |
GND |
| 106 |
MIPI_CSI_D1N |
MIPI_CSI_D1N |
| 108 |
MIPI_CSI_D1P |
MIPI_CSI_D1P |
| 110 |
GND |
GND |
| 112 |
MIPI_CSI_D3N |
MIPI_CSI_D3N |
| 114 |
MIPI_CSI_D3P |
MIPI_CSI_D3P |
| 116 |
GND |
GND |
| 118 |
MIPI_CSI_D0N |
MIPI_CSI_D0N |
| 120 |
MIPI_CSI_D0P |
MIPI_CSI_D0P |
| 122 |
GND |
GND |
| 124 |
MIPI_CSI_CLKN |
MIPI_CSI_CLKN |
| 126 |
MIPI_CSI_CLKP |
MIPI_CSI_CLKP |
| 128 |
GND |
GND |
| 130 |
- |
- |
| 132 |
- |
- |
| 134 |
- |
- |
| 136 |
GPIO0_A0 |
GPIO0_A0 |
| 138 |
GND |
GND |
| 140 |
I2C0_SCL_PMIC |
I2C0 Clock Signal |
| 142 |
I2C0_SDA_PMIC |
I2C0 Data Signal |
| 144 |
GND |
GND |
| 146 |
GND |
GND |
| 148 |
GND |
GND |
| 150 |
GND |
GND |
| 152 |
GND |
GND |
| 154 |
GND |
GND |
| 156 |
GND |
GND |
| 158 |
GND |
GND |
| 160 |
GND |
GND |
| 162 |
TP_RST |
GPIO0_B4_u |
| 164 |
GPIO0_B5_u |
GPIO0_B5_u |
| 166 |
TP_INT |
GPIO0_B3_d |
| 168 |
SENSOR_INT |
GPIO0_B7_d |
| 170 |
GND |
GND |
| 172 |
LCDC_CLK |
LCDC_CLK |
| 174 |
GND |
GND |
| 176 |
- |
- |
| 178 |
- |
- |
| 180 |
BT_REG_ON |
GPIO0_C1_d |
| 182 |
GPIO1_B0 |
GPIO1_B0 |
| 184 |
GND |
GND |
| 186 |
COMP_INT |
GPIO3_B4_d |
| 188 |
RK618_PWREN |
GPIO3_B0_d |
| 190 |
BT_PCM_IN |
GPIO3_A7_d |
| 192 |
BT_PCM_OUT |
GPIO3_A5_d |
| 194 |
BT_PCM_SYNC |
GPIO3_A3_d |
| 196 |
DC_DET |
GPIO3_A1_d |
| 198 |
LCD_RST |
GPIO3_B7_d |
| 200 |
RK912_IRQ |
GPIO3_B6_d |
| 202 |
RK618_RST |
GPIO3_B1_d |
| 204 |
LCDC_D23 |
GPIO3_D3_d |
| 206 |
LCDC_D22 |
GPIO3_D2_d |
| 208 |
LCDC_D7 |
GPIO3_B3_d |
| 210 |
LCDC_D21 |
GPIO3_D1_d |
| 212 |
LCDC_D9 |
GPIO3_B5_d |
| 214 |
LCDC_D20 |
GPIO3_D0_d |
| 216 |
LCDC_D0 |
GPIO3_A4_d |
| 218 |
LCDC_D19 |
GPIO3_C7_d |
| 220 |
LCDC_D2 |
GPIO3_A6_d |
| 222 |
LCDC_D18 |
GPIO3_C6_d |
| 224 |
GND |
GND |
| 226 |
- |
- |
| 228 |
- |
- |
| 230 |
- |
- |
| 232 |
- |
- |
| 234 |
- |
- |
| 236 |
GND |
GND |
| 238 |
GND |
GND |
| 240 |
GND |
GND |
| 242 |
GND |
GND |
| 244 |
GND |
GND |
| 246 |
GND |
GND |
| 248 |
GND |
GND |
| 250 |
GND |
GND |
| 252 |
GND |
GND |
| 254 |
GND |
GND |
| 256 |
GND |
GND |
| 258 |
GND |
GND |
| 260 |
GND |
GND |