VL82C107

The VL82C107 SCAMP Combination I/O chip when used with other VLSI SCAMP chips, allows designers to implement a very cost-effective minimum chip count motherboard. This chip combines a keyboard controller, a real-time clock with the address latches/buffers and DMA acknowledge decodes which are normally required in SCAMP- based systems. Additionally, the VL82C107 contains the circuity necessary to interface PC memory cards to the system or provide the chip select and control signals for an external VL16C552 UART I/O device, FDC, and IDE interface.

Features:

• Integrated peripheral controller for SCAMP VL82C310/VL82C311
• 146818A-compatible real-time clock
• 128 additional bytes of battery-backed CMOS RAM
• AT-compatible keyboard controller with integrated PS/2 mouse support
• SCAMP-compatible processor to ISA bus address registers/latches and buffers
• DMA acknowledge decoder
• PC memory card interface
• 8- or 16-bit PC memory card support
• Optional support for IDE, floppy, and VL16C452 chip selects
• XIP (Execute-In-Place) provisions
• Integrated oscillator for 14.3181 MHz
• 1.5-micron CMMOS in a 128-lead MQFP