MCP2140 is a low pin count (18 pins) device that implements IrDA standard wireless connection. It features bidirectional communication, support for various infrared functions, and low power consumption.
The MCP2140 IrDA communication controller implements the IrDA protocol stack, providing UART‑IR encoding/decoding and a low‑cost discrete IR receiver circuit. It operates with a fixed 9600 bps serial and IR interface and supports both DCE and DTE applications in embedded systems.
The device uses a 7.3728 MHz clock source, offers 29‑byte UART and 64‑byte IR buffers, and is available in PDIP, SOIC and SSOP packages. It features hardware handshaking signals (DSR, RTS, CTS) and a low‑power mode consuming less than 1 mA at 3 V. This manual is written in Chinese.
| Baud rate | 9600 bps (fixed) |
|---|---|
| Clock frequency | 7.3728 MHz |
| Package options | PDIP 18‑pin, SOIC 18‑pin, SSOP 20‑pin |
| Operating temperature range | -40 °C to +85 °C |
| Supply voltage (typical low‑power) | 3.0 V |
| UART buffer size | 29 bytes |
| IR buffer size | 64 bytes |
The MCP2140 uses a fixed baud rate of 9600 bps for both its UART and IR interfaces.
The device requires a 7.3728 MHz clock source for correct operation.
In low‑power mode it draws less than 1 mA at 3.0 V with a 7.3728 MHz clock.