VCC1 es la pila, al menos en mi plaquita.
ce pin, es reset ahora...
http://playground.arduino.cc/Main/DS1302
conexión
MODULE ARDUINO
GND GND del arduino
VCC 2 +5V del arduino
SCK D4 "salida digital arduino"
I/O D3 "salida digital arduino"
RST(CS) D2 "salida digital arduino"
scketch
/* Define the DIO pins used for the RTC module */
#define SCK_PIN 4
#define IO_PIN 3
#define RST_PIN 2
/* Include the DS1302 library */
#include <DS1302.h>
/* Initialise the DS1302 library */
DS1302 rtc(RST_PIN, IO_PIN, SCK_PIN);
void setup()
{
/* Clear the 1302's halt flag /
rtc.halt(false);
/ And disable write protection */
rtc.writeProtect(false);
/* Initialise the serial port */
Serial.begin(9600);
}
/* Main program */
void loop()
{
/* Set the time and date to 16:30 on the 3rd of September 2013 */
rtc.setDOW(MONDAY);
rtc.setTime(16,30,0);
rtc.setDate(3, 9, 2013);
/* Read the time and date once every second */
while(1)
{
Serial.print("It is ");
Serial.print(rtc.getDOWStr());
Serial.print(" ");
Serial.print(rtc.getDateStr());
Serial.print(" ");
Serial.print("and the time is: ");
Serial.println(rtc.getTimeStr());
/* Wait before reading again */
delay (1000);
}
}