5903 BiRa Systems CAMAC Memory Static Memory Module

The BiRa Systems 5900 Series CAMAC Memory Static Memory modules are single-width CAMAC SRAM modules which derive power and ground from dataway +6V. No other dataway lines are utilized. Communication is through the rear auxiliary connector. Twenty-bit addressing allows expansion to one Mega word via a PCB switch on each module. A BiRa 5900 Auxiliary Bus is recommended for interconnection for 5903, but a Viking 3VH18 or equivalent PC board edge connector may be daisy-chained. The 59256A requires an Ansley 609-4007 IDC for interconnection.Two front panel LEDs indicate the status of the module: LOAD is illuminated when the module is addressed and is writing data into memory. UNLOAD is illuminated when the module is addressed and data is read from the module. The memory uses a tri-state bus to communicate with the controlling device. The bus drivers have 35mA sink and 20mA drive. All input signals are buffered by High-Speed CMOS(HC) line receivers with hysteresis. Loading is maximum of fifteen LSTTL loads. Speed of operation is directly related to bus length and loading. Settle time and delays must be compensated for by the controlling device.