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Main board description
M A I N B O A R D O V E R V I E W
The Mainboard contains these features:
•
512K of additional RAM with 16bit access, 0 wait
•
128K of additional FLASH with configurable 8/16 bit access, 0 wait
•
System Control DIP switch for manual operation
•
programmable configurations of external memory organization with
support of
1.
boot from FLASH or RAM
2.
small model with mirror of bank FF to bank 0 for area 4000H-
0FFFFH
•
additional four ports to be used instead of CPU's P0, P1, P2, P3 in order
to support CPU single chip mode debugging using external bus mode
of CPU
•
three RS232 interfaces, 2 dedicated for CPU, one for Main board UART
(DB9)
•
two high-speed CAN drivers and connectors (DB9)
•
CAN and RS232 drivers can be replaced by user ones
•
serial EEPROM 1kx8 (24C08 type)
•
2 digit LED display with buffer
•
UART with 16550 “mimic” and RTS/CTS hardware handshake
•
additional I
2
C is provided for software creation support and EEPROM
control
Chapter
8