Microchip Technology MA330012 데이터 시트
dsPIC33F
DS70165E-page 346
Preliminary
©
2007 Microchip Technology Inc.
FIGURE 26-25:
ADC CONVERSION (10-BIT MODE) TIMING CHARACTERISTICS
(CHPS<1:0> =
(CHPS<1:0> =
01
, SIMSAM =
0
, ASAM =
0
, SSRC<2:0> =
000
)
AD55
T
SAMP
Clear SAMP
Set SAMP
AD61
ADCLK
Instruction
SAMP
ch0_dischrg
ch1_samp
AD60
CONV
ADxIF
Buffer(
0
)
Buffer(
1
)
1
2
3
4
5
6
8
5
6
7
1 – Software sets ADxCON. SAMP to start sampling.
2 – Sampling starts after discharge period. T
SAMP
is described in Section 17 in the “dsPIC30F Family Reference Manual”.
3 – Software clears ADxCON. SAMP to start conversion.
4 – Sampling ends, conversion sequence starts.
5 – Convert bit 9.
8 – One T
AD
for end of conversion.
AD50
ch0_samp
ch1_dischrg
eoc
7
AD55
8
6 – Convert bit 8.
7 – Convert bit 0.
Execution