VERSALOGIC Industrial Partner

Versalogic VL-7806 Multifunction Z80 Processor Card for the STD Bus, Two RS-232 Serial I/O Ports. Simple Type: CPU Board

Both the VL-7806 and VL-7807 microprocessor cards share the same features and functions, except for the type of on-board I/O ports that they include. They feature a Z80 processor, four counter/timer channels, four 28 pin memory sockets, and two communications ports on a single STD BUS card. The VL-7806/7 board include a flexible memory mapping option that allows a mixture of memory devices to be accommodated. The on-board sockets can accept a wide variety of memory chips including 2 to 32K RAMs, 2 to 32K PROMs, EEPROMs, and non-volatile (zero power) RAMs. In addition, the memory expansion line (MEMEX) can be controlled by the board. Normally one or two of the on-board timer channels are used for baud rate generation. The remaining two or three can be used as general purpose timers, external event counters, or as prioritizing interrupt inputs. In addition to the varying I/O (communication) configurations, each of these products is available in several different speed versions (including 2.5 MHz, 3.6864 MHz, 4 MHz, and 6 MHz). The card's clock speed affects the overall thruput of the system (processing speed), as well as the communications speed (baud rates) at which the card may be operated.