C515A Datasheet, PDF (31/58 Pages) Siemens Semiconductor Group – 8-Bit CMOS Microcontroller

C515A
10-Bit A/D Converter
The C515A provides an A/D converter with the following features:
– 8 multiplexed input channels (port 6), which can also be used as digital inputs
– 10-bit resolution
– Single or continuous conversion mode
– Internal or external start-of-conversion trigger capability
– Interrupt request generation after each conversion
– Using successive approximation conversion technique via a capacitor array
– Built-in hidden calibration of offset and linearity errors
The A/D converter operates with a successive approximation technique and uses self calibration
mechanisms for reduction and compensation of offset and linearity errors. The externally applied
reference voltage range has to be held on a fixed value within the specifications. The main
functional blocks of the A/D converter are shown in figure 14.
Semiconductor Group
31
1997-10-01