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PIC16F913 bảng dữ liệu(PDF) 145 Page - Microchip Technology

tên linh kiện PIC16F913
Giải thích chi tiết về linh kiện  28/40/44-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt Technology
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nhà sản xuất  MICROCHIP [Microchip Technology]
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© 2005 Microchip Technology Inc.
Preliminary
DS41250E-page 143
PIC16F917/916/914/913
12.0
ANALOG-TO-DIGITAL
CONVERTER (A/D) MODULE
The Analog-to-Digital converter (A/D) allows conversion
of an analog input signal to a 10-bit binary representation
of that signal. The PIC16F917/916/914/913 has up to
eight analog inputs, multiplexed into one sample and hold
circuit. The output of the sample and hold is connected to
the input of the converter. The converter generates a
binary result via successive approximation and stores the
result in a 10-bit register. The voltage reference used in
the conversion is software selectable to either VDD or a
voltage applied by the VREF pin. Figure 12-1 shows the
block diagram of the A/D on the PIC16F917/916/914/913.
FIGURE 12-1:
A/D BLOCK DIAGRAM
RA0/AN0/C1-/SEG12
A/D
RA1/AN1/C2-/SEG7
RA2/AN2/C2+/VREF-/COM2
RA5/AN4/C2OUT/SS/SEG5
VDD
VREF+
ADON
GO/DONE
VCFG0 = 1
VCFG0 = 0
CHS<2:0>
ADRESH ADRESL
10
10
ADFM
VSS
RE0/AN5/SEG21(1)
RE1/AN6/SEG22(1)
RE2/AN7/SEG23(1)
RA3/AN3/C1+/VREF+/COM3(2)/SEG15
VCFG1 = 1
VCFG1 = 0
VREF-
Note 1:
These channels are only available on PIC16F914/917 devices.
2:
COM3 available on RA3 only on PIC16F913/916 devices.



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