AP1633

The AP1633 is designed as one kind of connecting a fast external A/D converter. The external ADC of this device will provide a result after three cycles and then continuously every cycle. After each 800ns cycle there have to be an (external) interrupt to trigger the PEC and transfer the ADC result (8 Bit from a Port) to a location RAM (intern or extern).

For example, have the interrupt request flag (IR) set at the beginning at each cycle. As the previous page shows, the falling edge (CC1) will be generated when the scanner finished channel CC1/CC9. There are additional delays before the Port-pin will actually change its level: compare match to Output:100ns, and for the input Capture of signals is only one delay to add on: sample pin to capture IR setting: 100ns. If you want to know more information such as the electrical characteristics about the AP1633, please download the datasheet in www.seekic.com or www.chinaicmart.com .