Digital guide
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Radisys SBC486DX66 Industrial Single-Board Computer
1. Technical Specifications
• Processor: Intel 80486DX @ 66 MHz, 256 KB on-board cache
• Memory: 8 MB SIMM RAM (expandable), supports ECC and non-ECC modules
• Storage: On-board Flash or CompactFlash socket for disk emulation
• Bus Interface: 16-bit ISA, passive backplane compatible
• I/O Ports:
– 2 × RS-232 serial (16550 UART)
– 1 × RS-485 isolated serial
– 1 × bi-directional parallel port (SPP/EPP/ECP)
– 16 × GPIO lines (TTL)
– VGA CRT interface (Cirrus GD5428)
– Floppy and IDE headers
Detailed content
Power: +5 VDC ±5 %, 2.5 A typical (12 W)
• Dimensions: 338 mm × 122 mm (13.3 in × 4.8 in), 6-layer PCB
• Operating Temperature: −40 °C to +85 °C (industrial grade)
• Shock & Vibration: 15 g operational, 50 g non-operational
• Dimensions: 338 mm × 122 mm (13.3 in × 4.8 in), 6-layer PCB
• Operating Temperature: −40 °C to +85 °C (industrial grade)
• Shock & Vibration: 15 g operational, 50 g non-operational
2. Functional Highlights
• ISA passive-backplane design allows drop-in replacement in legacy 19-inch rack systems
• Real-time clock with battery backup and watchdog timer for high-availability control
• BIOS in socketed EPROM for field upgrades without removing the board
• VGA graphics and keyboard/mouse interface enable direct local HMI connection
• Wide-input DC/DC converters tolerate brown-outs and surges on factory floors
• Conformal-coated PCB resists moisture, dust and corrosive gases
• ISA passive-backplane design allows drop-in replacement in legacy 19-inch rack systems
• Real-time clock with battery backup and watchdog timer for high-availability control
• BIOS in socketed EPROM for field upgrades without removing the board
• VGA graphics and keyboard/mouse interface enable direct local HMI connection
• Wide-input DC/DC converters tolerate brown-outs and surges on factory floors
• Conformal-coated PCB resists moisture, dust and corrosive gases
3. Application Scenarios
• Legacy PLC/HMI controllers in automotive assembly lines
• CNC machine tool control retrofits
• Power-generation turbine auxiliary systems
• Railway signaling and track-side equipment cabinets
• Semiconductor fab subsystems requiring long-term spares support
• Legacy PLC/HMI controllers in automotive assembly lines
• CNC machine tool control retrofits
• Power-generation turbine auxiliary systems
• Railway signaling and track-side equipment cabinets
• Semiconductor fab subsystems requiring long-term spares support
4. Ordering & Support Package
• SBC486DX66 board with heat-sink and retention bracket
• 4 MB or 8 MB SIMM memory module (customer-specified)
• ISA backplane ribbon cable set
• Technical reference manual and BIOS update utility
• 36-month factory repair warranty
• SBC486DX66 board with heat-sink and retention bracket
• 4 MB or 8 MB SIMM memory module (customer-specified)
• ISA backplane ribbon cable set
• Technical reference manual and BIOS update utility
• 36-month factory repair warranty
