Dynapath Systems CMOS Dual Bus Memory Board 501-03883-01

Used in Dynapath Delta series CNC control racks, the 501-03883-01 is a CMOS Dual Bus Memory Board manufactured under the Bendix/PTI era of Dynapath Systems. The board carries secondary assembly number 502-03093-41, visible on the PCB label, and board assembly prefix 503, with serial number A20415 printed on the bottom edge barcode label. The memory array is populated with Harris Semiconductor HM6264LP-15 CMOS SRAM ICs across 24 or more positions, organized in a dual-bus architecture. An onboard Tadiran TL-5135 3.6V lithium inorganic battery provides data retention for stored CNC programs and parameters when the control is powered down. Dual supply rails VCCA and VCCB are designated at connector positions J3-1 and J3-2 respectively, as marked on the silkscreen. A write-protect switch is present and labeled on the board. Sub-assembly sticker references include 502-70172-00, 502-70174-00, and 502-70196-00. Gold-plated edge connectors on both sides are consistent with the ISA-format bus interface used across the Dynapath Delta control rack series. This board is the revised -01 variant of the 501-03883 assembly and is directly applicable to legacy Dynapath or Bendix-branded CNC machining centers utilizing the original 503-series ISA card rack architecture.

Stock # 0226-658