Winbond Electronics Corporation W83977ATF
The W83977ATF is an evolving product from Winbond's most popular I/O chip W83877F which integrates the disk drive adapter, serial port (UART), IrDA 1.0 SIR, parallel port, configurable plugand-play registers for the whole chip plus additional powerful features: ACPI, 8042 keyboard controller with PS/2 mouse support, 23 general purpose I/O ports, full 16-bit address decoding, OnNow keyboard wake-up, OnNow mouse wake-up, and OnNow CIR wake-up. The disk drive adapter functions of W83977ATF include a floppy disk drive controller compatible with the industry standard 82077/ 765, data separator, write pre-compensation circuit, decode logic, data rate selection, clock generator, drive interface control logic, and interrupt and DMA logic. The wide range of functions integrated onto the W83977ATF greatly reduces the number of components required for interfacing with floppy disk drives.
Winbond Electronics Corporation
