User’s Manual
27
Figure 7 shows the use of the Rabbit 4000 microprocessor ports in the RCM4100 series of
modules.
Figure 7. Use of Rabbit 4000 Ports
The ports on the Rabbit 4000 microprocessor used in the RCM4100 series are config-
urable, and so the factory defaults can be reconfigured. Table 2 lists the Rabbit 4000
factory defaults and the alternate configurations.
R
ABBIT®
4000
Port A
Port B
Port D
Port E
PA0PA7
PB2PB7
PE0PE7
PD0PD7
Watchdog
11 Timers
Clock Doubler
Slave Port
Real-Time Clock
RAM
Backup Battery
Support
Flash
Misc. I/O
PC4*
PC5*
Port C
(Serial Ports C & D)
Programming
Port
(Serial Port A)
A/D Converter
(Serial Port B)
PB1, PC6, STATUS
PC0, PC2
PC1, PC3
Serial Ports E & F
PC4 and PC5 are
not available on
RCM4100 module.
*
/RESET_OUT
/IORD
/IOWR
/RES_IN
PC7, /RES,
SMODE0, SMODE1
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