Command and Data Handling System (CDH-110)

• Function: The central processing unit consists of two main integrated computers for managing satellite tasks and attitude control.
• Components & Roles:
  • OBC-110 (On-Board Computer): Responsible for task scheduling and coordinating Telemetry, Tracking, and Command (TMTC) functions.
  • ACC-110 (Attitude Control Computer): Runs the attitude algorithm and interfaces with all Attitude Determination and Control Subsystem (ADCS) components.
• Processing Specifications:
  • Process Power: 90 MIPS for both OBC-110 and ACC-110.
  • Memory (OBC-110): Flash: 16 MB, EEPROM: 32 MB, RAM: 8 MB.
• Physical Specifications:
  • Size: 176×94×69 mm³.
  • Weight: 815 g.
• Reliability Specifications:
  • Radiation Test (Co60): 20 krad.
• Space Heritage: TRL9 (Space-proven).

For more information, Please download the Broucher