User`s manual

User’s Manual 7
2.2 RabbitCore 2000 Digital Inputs and Outputs
Figure 3 shows the subsystems designed into the RabbitCore 2000.
Figure 3. RabbitCore 2000 Subsystems
The RabbitCore 2000 has 40 parallel I/O lines grouped in five 8-bit ports available on
headers J1 and J2. The 24 bidirectional I/O lines are located on pins PA0–PA7, PD0-PD7,
and PE0-PE7. The pinouts for headers J1 and J2 are shown in Figure 4.
Figure 4. RabbitCore 2000 I/O Pins
RABBIT 2000
CORE
MODULE
Port A
Port B
Port D
Port E
PA0PA7
PB0
PB5
PB6
PB7
4x CMOS
synchronous/
asynchronous
PE0PE7
PD0PD7
A0A12
IORD
IOWR
BUFEN
DA0DA7
PCLK
RESET
WDO
Data Lines
Address Lines
Misc. Outputs
I/O Control
Watchdog
7 Timers
Clock Doubler
Slave Port
Real-Time Clock
RAM
Backup Battery
Support
Flash
Serial Ports
(Port C)
Programming
Port
A11
A9
A7
A5
A3
A1
STATUS
PC1
PC3
PC5
PC7
PD1
PD3
PD5
PD7
VCC
VRAM
SMODE1
/RES_IN
GND
A12
A10
A8
A6
A4
A2
A0
PC0
PC2
PC4
PC6
PD0
PD2
PD4
PD6
GND
VBAT
SMODE0
/RES_OUT
VCC
J2
GND
PA0
PA2
PA4
PA6
PB0
PB2
PB4
PB6
PCLK
D7
D5
D3
D1
PE7
PE5
PE3
PE1
/IOWR
/BUFEN
VCC
PA1
PA3
PA5
PA7
PB1
PB3
PB5
PB7
GND
D6
D4
D2
D0
PE6
PE4
PE2
PE0
/IORD
/WDO
J1
These are the pinouts as seen on the
Bottom Side of the Core Module.
Note: