C-K1BA Overview
Chapter 1 Product Overview
The C-K1BA V1.0 core board uses the SpacemiT K1 (RISC-V SpacemiT X60) octa-core processor, ships with Harmony, and runs at up to 1.6 GHz. It delivers outstanding performance with rich interfaces. With an IMG BXE-2-32 @ 819 MHz GPU and 32 KB SLC, it supports 4K and H.265/H.264 hardware decode — top-tier in both benchmarks and decoding — and is a new choice for human-machine interaction and industrial-control projects.
1.1 Scope of application
The C-K1BA V1.0 is a core board based on SpacemiT's RISC-V architecture K1 octa-core processor, widely applicable to smart-display terminals, video terminals, industrial-automation terminals, and other fields.
1.2 Product features
- RISC-V open architecture, self-controllable, designed with fully-domestic industrial components.
- Uses four 80-pin BTB connectors to bring out every pin function, enabling flexible expansion designs.
- Integrates PCIe2.0, dual GMAC, SDIO, I2C, PWM, UART, and GPIO interfaces to meet the requirements of various peripherals on the market.
- Supports dual-screen display. HDMI supports up to 1920×1080, and MIPI supports up to 1920×1080.
- Built-in deep neural-network unit (NPU) delivering up to 2.0 TOPS, meeting the needs of deep-learning projects.
1.3 Appearance and interface diagram
Front:
Back:
Photo notice
The photos above were taken of a board from one of our production batches. Because the product is under continuous maintenance, the board actually shipped may not match the photos exactly.
Chapter 2 Basic feature list
| Feature | Description |
|---|---|
| Board size | 65*45mm |
| CPU | SpacemiT RISC-V processor K1, octa-core, up to 1.6 GHz |
| OS | Harmony OS |
| Memory | Supports 4 GB LPDDR4 memory |
| Storage | Supports 32 GB, 64 GB, and 128 GB eMMC storage options |
| Display | 1× HDMI, up to 1080P@60Hz 1× MIPI, up to 1080P@60Hz |
| Connectivity | 2× internal gigabit Ethernet MAC 2× PCIe2.0 X2 lane RC up to 3× UART up to 4× I2C up to 2× SPI up to 2× SDIO |
| Board-to-board connector | 80P 0.5mm pitch B2B connector ×4 |
| Operating temperature | -10°C to 60°C |
Chapter 3 PCB dimensions and interface layout
3.1 PCB dimensions
- PCB: 6-layer board, 1.6 mm thick
- PCBA: L × W = 65 mm × 45 mm, MAX H = 7.0 (??) +/- 0.3 mm
- Screw hole spec: M2 × 4
3.2 Interface parameter notes
Image annotation: the circle on the socket-interface image 
indicates pin 1.
BTB interface (80pin / 0.5mm × 4)
Chapter 4 Electrical performance
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