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Figure 7 shows the use of the Rabbit 4000 microprocessor ports in the RCM4200 modules.
PC0, PC2
PC1, PC3
PB1, PC6, STATUS
PC7, /RES,
SMODE0, SMODE1
PC4
PC5
The ports on the Rabbit 4000 microprocessor used in the RCM4200 are configurable, and
so the factory defaults can be reconfigured. Table 2 lists the Rabbit 4000 factory defaults
and the alternate configurations.
User's Manual
PB2–PB7
PA0–PA7
Port A
Port B
Port C
ABBIT ®
R
(Serial Ports C & D)
4000
Serial Ports E & F
(RCM4210 only)
Real-Time Clock
Programming
Port
Watchdog
(Serial Port A)
11 Timers
A/D Converter
Slave Port
(Serial Port B)
Clock Doubler
Backup Battery
RAM
Support
Figure 7. Use of Rabbit 4000 Ports
PD0–PD7
Port D
(RCM4210 only)
Port E
PE0–PE7
/RES _ IN
Misc. I/O
/RESET_OUT
/IORD
/IOWR
Flash
29
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