This document is the BU92001KN datasheet, which introduces the functions, parameters, and usage methods of BU92001KN.
The BU92001KN is an IrDA SIR encoder/decoder IC with a UART interface. It supports communication rates from 2.4 kbps to 115.2 kbps and operates from a 2.5 V to 3.5 V supply. The document includes block diagrams, pin functions, and recommended operating conditions.
Detailed electrical characteristics, absolute maximum ratings, and usage notes are provided, along with a dimensions diagram and pin‑out table. The appendix contains legal notices and contact information for ROHM.
| Supply Voltage (VDD) | 2.5 V – 3.5 V |
|---|---|
| Clock Frequency (fCLK) | 24 MHz – 30 MHz |
| Communication Rate | 2.4 kbps – 115.2 kbps |
| Input Voltage (Vin) | -0.3 V – VDD+0.3 V |
| Operating Temperature | -25 °C – 85 °C |
| Storage Temperature | -40 °C – 100 °C |
| High‑level Input Voltage (VIH) | 0.8 × VDD |
| Low‑level Input Voltage (VIL) | 0.2 × VDD |
| High‑level Output Voltage (VOH) | VDD - 0.6 V |
| Low‑level Output Voltage (VOL) | 0.6 V |
The device supports a communication rate from 2.4 kbps to 115.2 kbps.
The recommended supply voltage (VDD) is 2.5 V to 3.5 V.
The clock frequency can be set between 24 MHz and 30 MHz.
The absolute maximum supply voltage is 4.541 V, input voltage -0.3 V to VDD+0.3 V, and operating temperature -25 °C to 85 °C.