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DSPIC33FJ12MC02ESS датащи(PDF) 203 Page - Microchip Technology

номер детали DSPIC33FJ12MC02ESS
подробное описание детали  High-Performance, 16-Bit Digital Signal Controllers
PDF  284 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

DSPIC33FJ12MC02ESS датащи(HTML) 203 Page - Microchip Technology

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© 2007 Microchip Technology Inc.
Preliminary
DS70265B-page 201
dsPIC33FJ12MC201/202
EQUATION 19-1:
ADC CONVERSION CLOCK PERIOD
FIGURE 19-2:
ADC TRANSFER FUNCTION (10-BIT EXAMPLE)
FIGURE 19-3:
ADC CONVERSION CLOCK PERIOD BLOCK DIAGRAM
TAD = TCY(ADCS + 1)
ADCS =
TAD
TCY
– 1
10 0000 0010 (= 514)
10 0000 0011 (= 515)
01 1111 1101 (= 509)
01 1111 1110 (= 510)
01 1111 1111 (= 511)
11 1111 1110 (= 1022)
11 1111 1111 (= 1023)
00 0000 0000 (= 0)
00 0000 0001 (= 1)
Output Code
10 0000 0000 (= 512)
(VINH – VINL)
VREFL
VREFH – VREFL
1024
VREFH
VREFL +
10 0000 0001 (= 513)
512 * (VREFH – VREFL)
1024
VREFL +
1023 * (VREFH – VREFL)
1024
VREFL +
0
1
ADC Internal
RC Clock
TOSC(1)
X
2
ADC Conversion
Clock Multiplier
1, 2, 3, 4, 5,..., 64
ADxCON3<15>
TCY
TAD
6
ADxCON3<5:0>
Note:
Refer to Figure 7-2 for the derivation of FOSC when the PLL is enabled. If the PLL is not used, FOSC is equal
to the clock frequency. TOSC = 1/FOSC.



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