Omar,

You need to declare the struct something like this:-

struct info
{
int name[15];
int age[2];
int birthdate[6];
}datos;

Depending on your compiler there should be a directive to place the struct in external memory. For example in Keil C51 it would be:-

struct info
{
int name[15];
int age[2];
int birthdate[6];
}xdata datos;

You access individual parts of the structure like this:-

nombre = datos.name;

Are you sure you are using the right data types within the structure? I might have done something like this:-

struct info
{
char name[15];
int age;
} xdata datos = { "Paul", 31 };

Hope this all helps,

Paul