Samsung S3C2440A Manual Do Utilizador

S3C2440A has 130 multi-functional input/output port pins and there are eight ports as shown below: 

- Port A(GPA): 25-output port 

- Port B(GPB): 11-input/out port 

- Port C(GPC): 16-input/output port 

- Port D(GPD): 16-input/output port 

- Port E(GPE): 16-input/output port 

- Port F(GPF): 8-input/output port 

- Port G(GPG): 16-input/output port 

- Port H(GPH): 9-input/output port 

- Port J(GPJ): 13-input/output port 

Each port can be easily configured by software to meet various system configurations and design requirements. 
You have to define which function of each pin is used before starting the main program. If a pin is not used for 
multiplexed functions, the pin can be configured as I/O ports. 

Initial pin states are configured seamlessly to avoid problems.