# D-Robotics RDK S100 Developer Kit

> Robotics and vision computer with six 1.5 GHz Cortex-A78AE cores, four Cortex-R52+ real-time cores, 80 TOPS BPU, 12 GB LPDDR5, 64 GB eMMC, triple four-lane CSI, dual Gigabit Ethernet and 40-pin expansion.

- Manufacturer: D-Robotics
- Part number: KS1E55Y
- Category: Development boards
- Canonical page: https://www.xirkit.io/products/d-robotics-rdk-s100-developer-kit-cbed
- Pinout: https://www.xirkit.io/products/d-robotics-rdk-s100-developer-kit-cbed/pinout
- Structured JSON: https://www.xirkit.io/products/d-robotics-rdk-s100-developer-kit-cbed/data.json
- Source: Xirkit structured parts catalog — every value traced to a cited document; unknowns are explicit.

## Key specifications

| Property | Value |
| --- | --- |
| Main chip | S100E |
| Chips on board | S100E |
| Exposed GPIO | 28 |
| Documented board pins | 40 |
| I/O voltage | 3.3 V |
| Flash | 67,108,864 KB |
| SRAM | 12,582,912 KB |
| Interfaces | i2c, uart, gpio, i2s, spi, pwm |
| Frameworks | Ubuntu 22.04, TogetheROS.Bot, FreeRTOS |
| Dimensions | 121 × 120 × 1.6 mm |
| Operating temperature | 0 to 45 °C |

## Pinout (40 pins, 0 with electrical limits)

| Pin | Position | Kind | Chip pad | Functions | VIH | VIL | VOH | VOL | IOH | IOL | 5 V tolerant |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| VDD_PERI_3V3 | J24 · 1 | power | — | vdd_peri_3v3 | — | — | — | — | — | — | — |
| VDD_PERI2_5V | J24 · 2 | power | — | vdd_peri2_5v | — | — | — | — | — | — | — |
| I2C5_SDA_3V3 | J24 · 3 | gpio | GPIO_PERI[16] | I2C5_SDA, UART2_TXD, GPIO_PERI[16] | — | — | — | — | — | — | — |
| VDD_PERI2_5V | J24 · 4 | power | — | vdd_peri2_5v | — | — | — | — | — | — | — |
| I2C5_SCL_3V3 | J24 · 5 | gpio | GPIO_PERI[15] | I2C5_SCL, UART2_RXD, GPIO_PERI[15] | — | — | — | — | — | — | — |
| GND | J24 · 6 | ground | — | ground | — | — | — | — | — | — | — |
| PCM0_MCLK_3V3 | J24 · 7 | gpio | GPIO_PERI[33] | PCM0_MCLK, GPIO_PERI[33] | — | — | — | — | — | — | — |
| UART2_TX_3V3 | J24 · 8 | gpio | GPIO_PERI[16] | I2C5_SDA, UART2_TXD, GPIO_PERI[16] | — | — | — | — | — | — | — |
| GND | J24 · 9 | ground | — | ground | — | — | — | — | — | — | — |
| UART2_RX_3V3 | J24 · 10 | gpio | GPIO_PERI[15] | I2C5_SCL, UART2_RXD, GPIO_PERI[15] | — | — | — | — | — | — | — |
| 40PIN_GPIO0_3V3 | J24 · 11 | gpio | — | U21_GPIO_P00 | — | — | — | — | — | — | — |
| PCM0_BCLK_3V3 | J24 · 12 | gpio | GPIO_PERI[34] | PCM0_BCLK, GPIO_PERI[34] | — | — | — | — | — | — | — |
| 40PIN_GPIO1_3V3 | J24 · 13 | gpio | — | U21_GPIO_P01 | — | — | — | — | — | — | — |
| GND | J24 · 14 | ground | — | ground | — | — | — | — | — | — | — |
| 40PIN_GPIO2_3V3 | J24 · 15 | gpio | — | U21_GPIO_P02 | — | — | — | — | — | — | — |
| 40PIN_GPIO6_3V3 | J24 · 16 | gpio | — | U21_GPIO_P06 | — | — | — | — | — | — | — |
| VDD_PERI_3V3 | J24 · 17 | power | — | vdd_peri_3v3 | — | — | — | — | — | — | — |
| 40PIN_GPIO7_3V3 | J24 · 18 | gpio | — | U21_GPIO_P07 | — | — | — | — | — | — | — |
| SPI0_MOSI_3V3 | J24 · 19 | gpio | GPIO_PERI[19] | SPI0_MOSI, GPIO_PERI[19] | — | — | — | — | — | — | — |
| GND | J24 · 20 | ground | — | ground | — | — | — | — | — | — | — |
| SPI0_MISO_3V3 | J24 · 21 | gpio | GPIO_PERI[20] | SPI0_MISO, GPIO_PERI[20] | — | — | — | — | — | — | — |
| 40PIN_GPIO8_3V3 | J24 · 22 | gpio | — | U21_GPIO_P10 | — | — | — | — | — | — | — |
| SPI0_CLK_3V3 | J24 · 23 | gpio | GPIO_PERI[21] | SPI0_CLK, GPIO_PERI[21] | — | — | — | — | — | — | — |
| SPI0_CS0_3V3 | J24 · 24 | gpio | GPIO_PERI[17] | SPI0_CSN0, GPIO_PERI[17] | — | — | — | — | — | — | — |
| GND | J24 · 25 | ground | — | ground | — | — | — | — | — | — | — |
| SPI0_CS1_3V3 | J24 · 26 | gpio | GPIO_PERI[18] | SPI0_CSN1, UART3_RXD, GPIO_PERI[18] | — | — | — | — | — | — | — |
| I2C4_SDA_3V3 | J24 · 27 | gpio | GPIO_CAM[17] | I2C4_SDA, GPIO_CAM[17] | — | — | — | — | — | — | — |
| I2C4_SCL_3V3 | J24 · 28 | gpio | GPIO_CAM[16] | I2C4_SCL, GPIO_CAM[16] | — | — | — | — | — | — | — |
| 40PIN_GPIO3_3V3 | J24 · 29 | gpio | — | U21_GPIO_P03 | — | — | — | — | — | — | — |
| GND | J24 · 30 | ground | — | ground | — | — | — | — | — | — | — |
| 40PIN_GPIO4_3V3 | J24 · 31 | gpio | — | U21_GPIO_P04 | — | — | — | — | — | — | — |
| GPIO_CAM_5_3V3 | J24 · 32 | gpio | GPIO_CAM[5] | LPWM1_DOUT1, GPIO_CAM[5] | — | — | — | — | — | — | — |
| GPIO_CAM_4_3V3 | J24 · 33 | gpio | GPIO_CAM[4] | LPWM1_DOUT0, GPIO_CAM[4] | — | — | — | — | — | — | — |
| GND | J24 · 34 | ground | — | ground | — | — | — | — | — | — | — |
| PCM0_FYSNC_3V3 | J24 · 35 | gpio | GPIO_PERI[35] | PCM0_FSYNC, GPIO_PERI[35] | — | — | — | — | — | — | — |
| 40PIN_GPIO9_3V3 | J24 · 36 | gpio | — | U21_GPIO_P11 | — | — | — | — | — | — | — |
| 40PIN_GPIO5_3V3 | J24 · 37 | gpio | — | U21_GPIO_P05 | — | — | — | — | — | — | — |
| PCM0_DATA0_3V3 | J24 · 38 | gpio | GPIO_PERI[36] | PCM0_DATA0, GPIO_PERI[36] | — | — | — | — | — | — | — |
| GND | J24 · 39 | ground | — | ground | — | — | — | — | — | — | — |
| PCM0_DATA1_3V3 | J24 · 40 | gpio | GPIO_PERI[37] | PCM0_DATA1, GPIO_PERI[37] | — | — | — | — | — | — | — |

## Where to buy

| Supplier | Price | Stock | Checked | URL |
| --- | --- | --- | --- | --- |
| Waveshare | 599.99 USD | unknown | 2026-09-28 | https://www.waveshare.com/rdk-s100.htm |

## FAQ

**What microcontroller does the D-Robotics RDK S100 Developer Kit use?**

The D-Robotics RDK S100 Developer Kit is built around the S100E.

**How many GPIO pins does the D-Robotics RDK S100 Developer Kit have?**

28 GPIO pins are exposed. Xirkit documents 40 board pins, 0 of them with pin-level electrical limits.

**How much does the D-Robotics RDK S100 Developer Kit cost?**

From $599.99 at Waveshare. Prices are observed unit prices before tax and shipping.

**What are the D-Robotics RDK S100 Developer Kit dimensions?**

121 × 120 × 1.6 mm. A STEP model is available for enclosure fit checks.

**Which interfaces does the D-Robotics RDK S100 Developer Kit support?**

i2c, uart, gpio, i2s, spi, pwm.

**How do I program the D-Robotics RDK S100 Developer Kit?**

Supported frameworks: Ubuntu 22.04, TogetheROS.Bot, FreeRTOS.

**Where does this D-Robotics RDK S100 Developer Kit data come from?**

Every value in this record is traced to a source — 2 documents including the board and chip datasheets — with the page and table cited per value. Unknowns are left explicit, never guessed.

## Sources

- [D-Robotics RDK S100 Developer Kit datasheet](https://archive.d-robotics.cc/downloads/en/hardware/rdk_s100/rdk_s100/d_robotics_rdk_s100_board_en_v1_2.pdf)
- [Waveshare listing](https://www.waveshare.com/rdk-s100.htm)

## Part graph

### Built from

- [S100E](https://www.xirkit.io/products/category/dev-boards/s100e) — main processor on the D-Robotics RDK S100 Developer Kit