
A.4 Use of Rabbit 2000 Parallel Ports
Figure A-3 shows the use of the Rabbit 2000 parallel ports. The BL1810 BL1810 has 24
general-purpose digital inputs/outputs available on headers J4 and J5—14 are bidirec-
tional, six are inputs only, and four are outputs only, as shown in
Figure A-3.PA0?PA7
PB0?
PB5
PB6
PB7
PD0, PD3,
PD6, PD7
Port A
Port B
Port D
2x RS-232,
1x RS-485,
CMOS synch-
ronous serial
Serial
Ports
J ACKRABBIT
RAM Flash
Real-Time Clock
Watchdog
Port E
D/A Converters
PE4?PE5
DA0
DA1
6 Timers
PCLK
IOBENB
Misc. Outputs
Slave Port
Clock Doubler
A/D Converter
AD0
Backup Battery
Programming
Port
High-Power Outputs
HV0?HV3
Figure A-3. BL1810 Subsystems
44
Rabbit 2000 Development Kit