W83627SF is a WINBOND I/O product. This data sheet provides detailed information about the product, including its specifications and function introductions.
The W83627SF is Winbond's LPC I/O chip that integrates a floppy disk controller, two UARTs, a smart‑card reader, and various peripheral ports such as parallel, keyboard, and game/MIDI. It uses a Low Pin Count (LPC) interface compatible with mainstream Intel chipsets, saving about 40 pins compared with a traditional ISA implementation.
The document details pin assignments, register maps, functional descriptions of each interface, electrical specifications, and mechanical data for the 128‑pin QFP package. It also includes ordering information, top‑mark decoding, and application circuit examples.
| Supported floppy drive capacities | 360 KB, 720 KB, 1.2 MB, 1.44 MB, 2.88 MB |
|---|---|
| Floppy data transfer rates | 250 Kb/s, 300 Kb/s, 500 Kb/s, 1 Mb/s, 2 Mb/s |
| UART maximum baud rates | 115.2 kbps (legacy) up to 921 kbps (advanced) |
| Package type | 128‑pin QFP |
| Pin count savings vs ISA | approximately 40 pins |
Each UART can operate at a legacy speed up to 115.2 kbps and at higher speeds of 230 kbps, 460 kbps, or 921 kbps.
Yes, the smart‑card reader complies with ISO 7816 and PC/SC standards.