Specifications

dsPIC33F Family Reference Manual
DS70183A-page 16-26 © 2006 Microchip Technology Inc.
16.11.2.2 MULTIPLE CHANNELS WITH SIMULTANEOUS SAMPLING
As shown in Figure 16-9 when using simultaneous sampling, the SAMC value specifies the sam-
pling time. In the example, SAMC specifies a sample time of 3 T
AD. Because automatic sample
start is active, sampling starts on all channels after the last conversion ends and continues for
three A/D clocks.
Figure 16-9: Converting Four Channels, Auto-Sample Start, TAD Conversion Start, Simultaneous Sampling
16.11.2.3 MULTIPLE CHANNELS WITH SEQUENTIAL SAMPLING
As shown in Figure 16-10 when using sequential sampling, the sample time precedes each
conversion time. In the example, 3 T
AD clocks are added for sample time for each channel.
Figure 16-10: Converting Four Channels, Auto-Sample Start, TAD Conversion Start, Sequential Sampling
TCONV TCONV TCONV TCONV
ADCLK
ch1_samp
ch2_samp
ch3_samp
ch0_samp
Buffer[0]
Buffer[1]
Buffer[2]
Buffer[3]
TCONV TCONV
DONE
SAMP
TSAMP
TCONV
ADCLK
ch1_samp
ch2_samp
ch3_samp
ch0_samp
Buffer[0]
Buffer[1]
Buffer[2]
Buffer[3]
TCONV
TCONV TCONV
TCONV
SAMP
TSAMP
TSAMP
DONE
= 0