B30 Patient Monitor
1-18
Document no. 2044677-001
3.1.3 CPU board
Figure 6 CPU board
The board is based on AMD ELAN SC520 microprocessor. Other features include a flat panel
display controller, 10/100 Mbit/s Ethernet interface, Sound system and Hitachi H8S based UPI.
The CPU section takes care of the central processing.
The main features are:
• AMD ELAN SC520
• Internal clock frequency 100MHz
• 64 Mbytes SDRAM
• 16 Mbytes program flash memory
• 32 Kbytes static RAM with real time clock
• 4 channel UART:
− 2 serial channels with signals in AC logic level
− 2 serial channel signals in RS232 level
• Programmable alarm sound generator
The SRAM with real-time clock is backed up by a lithium battery.
CAUTION The SRAM/Timekeeper IC contains a lithium battery. Discard the battery
according to local regulations.
Connectors
Interconnection board connector
Flat panel connector (to display connection board)
Speaker connector
Analog output board connector (to sync connector board)
Ethernet connector (network cable to network connector board)
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