Technical overview and specifications of Loongson 1, 2, 3 series processors and bridge chips.
The Loongson Technical White Paper (V3.2) provides a detailed description of the Loongson series of micro‑processors, covering the 1‑series small CPUs, 2‑series mid‑range CPUs, 3‑series high‑performance CPUs, and associated bridge chips. It outlines each chip’s functional features, technical characteristics, hardware development board systems, and recent development plans.
The document includes specifications for individual processors such as Loongson 1A, 1B, 1C, 1H and the 3‑series models, as well as information on interfaces, power consumption, manufacturing processes, and packaging. It also lists contact details for technical support and references to upcoming product road‑maps. This manual is written in Chinese.
| Loongson 1A core frequency | 266 MHz |
|---|---|
| Loongson 1B core frequency | 200 MHz |
| Loongson 1C core frequency | 240 MHz |
| Loongson 1H core frequency | 8 MHz |
| Loongson 1B manufacturing process | 130 nm CMOS |
The Loongson 1A chip runs at 266 MHz.
It provides four USB2.0/1.1 interfaces.
The Loongson 1B chip is fabricated with a 130 nm CMOS process.