User manual for the ICRoute LD3320 evaluation board, describing hardware, power requirements, demo programs and usage modes.
The LD3320 evaluation board showcases the voice‑recognition chip’s capabilities. It integrates the LD3320 chip, an STC10L08XE MCU, a 512 KB serial flash (W25Q40AVSNIG), a microphone, a 0.5 W speaker and power regulation via an LM1117‑3.3 regulator.
The board provides three built‑in demo applications (voice‑controlled song selection, smart‑home commands and city‑code lookup) and supports two operating modes – trigger mode and continuous mode – which can be selected through the on‑board keys. The manual explains power supply requirements, hardware connections and how to edit the keyword list. This manual is written in Chinese.
| Recommended input voltage | 5 V DC |
|---|---|
| Internal regulator output | 3.3 V |
| Peak current consumption | ≈300 mA |
| Main MCU | STC10L08XE |
| Serial flash memory | W25Q40AVSNIG, 512 KB |
| Crystal frequency | 22.1184 MHz |
| Speaker power rating | 0.5 W |
| Microphone type | 柱极体 MIC |
| Number of built‑in demo programs | 3 |
The board should be powered with a stable 5 V DC supply.
No, the board is intended only for evaluation and does not support secondary development.
Three demo programs are pre‑loaded: voice‑controlled song selection, smart‑home command operation, and city‑code lookup.
During maximum playback the board may draw about 300 mA.