DSPIC33FJ12MC201MM Datasheet, PDF (267/284 Pages) Microchip Technology – High-Performance, 16-Bit Digital Signal Controllers

dsPIC33FJ12MC201/202
FIGURE 23-23:
ADC CONVERSION (10-BIT MODE) TIMING CHARACTERISTICS
(CHPS<1:0> = 01, SIMSAM = 0, ASAM = 0, SSRC<2:0> = 000)
AD50
ADCLK
Instruction
Execution Set SAMP
SAMP
AD61
DONE
ADxIF
Clear SAMP
AD60
TSAMP
AD55
AD55
12
34 5 6
78
56
78
1 – Software sets ADxCON. SAMP to start sampling.
2 – Sampling starts after discharge period. TSAMP is described in Section 28. “10/12-bit ADC without DMA”
in the “dsPIC33F Family Reference Manual”.
3 – Software clears ADxCON. SAMP to start conversion.
4 – Sampling ends, conversion sequence starts.
5 ^{– Convert bit 9.}
6 ^{– Convert bit 8.}
7 ^{– Convert bit 0.}
8 – One TAD for end of conversion.
FIGURE 23-24:
ADC CONVERSION (10-BIT MODE) TIMING CHARACTERISTICS (CHPS<1:0> = 01,
SIMSAM = 0, ASAM = 1, SSRC<2:0> = 111, SAMC<4:0> = 00001)
AD50
ADCLK
Instruction
Execution
Set ADON
SAMP
ADxIF
TSAMP
AD55
AD55
TSAMP
AD55
DONE
12
34
5 6734
56
8
1 ^{– Software sets ADxCON. ADON to start AD operation.}
5 ^{– Convert bit 0.}
2 – Sampling starts after discharge period. TSAMP is described in
6 ^{– One TAD for end of conversion.}
Section 28. “10/12-bit ADC without DMA” in the “dsPIC33F Family
Reference Manual'.
7 ^{– Begin conversion of next channel.}
3 ^{– Convert bit 9.}
4 ^{– Convert bit 8.}
8 ^{– Sample for time specified by SAMC<4:0>.}
© 2007 Microchip Technology Inc.
Preliminary
DS70265B-page 265