This document is an additional explanation for Belling-Systron Microelectronics Co., Ltd. BL3502S single-chip microcomputer, mainly introducing the typical application diagram and simplification advice of the single-chip microcomputer.
This manual describes the BL3502S 8‑bit MASK microcontroller produced by Shanghai Belling‑Systron Microelectronics. It provides a typical application circuit for remote‑control devices and detailed design recommendations.
The document includes guidance on RST pin handling, component selection such as resistors and capacitors, and layout tips to avoid noise and ensure reliable operation. This manual is written in Chinese.
| Typical operating frequency | 355 kHz |
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The BL3502S is commonly used in remote‑control circuits as shown in the typical application diagram.