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參數(shù)資料
| 型號： | P82C150AFT |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | CAN Serial Linked I/O device SLIO with digital and analog port functions |
| 中文描述： | 1 CHANNEL(S), 125K bps, LOCAL AREA NETWORK CONTROLLER, PDSO28 |
| 封裝： | 7.50 MM, PLASTIC, SO-28 |
| 文件頁數(shù)： | 28/36頁 |
| 文件大?。?/td> | 209K |
| 代理商： | P82C150AFT |
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1996 Jun 19
28
Philips Semiconductors
Preliminary specification
CAN Serial Linked I/O device (SLIO) with
digital and analog port functions
P82C150
11.6
Using ADC
The application in Fig.16 can be used for analog-to-digital
conversion for only one analog input signal. The
evaluation of ADC were done with the values
R1 = R2 = 100 k
and C = 3.3 nF; under these conditions
the ADC may reach an accuracy of 7 to 8 bit (depends on
application). The external components should be
connected close to the port pins P15 and P16 with short
wiring to avoid disturbances at the analog input
port pin P15.
Using the on-chip multiplex function the P82C150 provides
up to six input port pins to convert analog input signals to
digital values (see Fig.17).
The period for one ADC cycle is identical to the length of
one DPM cycle.
11.7
Using analog input port functions
Figure 18 shows the wide range of analog input
applications:
Comparison of two analog input signals.
Comparison of one analog input signal against a fixed
threshold.
Window comparator including monitoring the
comparator outputs at the port pins P8 and P9;
additional automatically generated messages, when the
corresponding port bits in the Negative Edge and/or
Positive Edge register are set.
Local control two-step system.
Fig.16 ADC implementation.
handbook, halfpage
P82C150
P16
R1
R2
C
P15
one analog input signal
for A/D conversion
MHA076
Fig.17 Two multiplexed analog input signals
switched for analog-to-digital conversion
(maximum 6 signals; see Fig.5).
handbook, halfpage
P82C150
feedback
P15
P16
P14
analog signal
P5
P6
V
t
V
t
MHA075
SW3 to
SW1
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