Example Routines; Adc Basic Operation (Polling Mode) - STC micro STC8A8K64D4 Series Reference Manual

STC8A8K64D4 Series Manual

17.5 Example Routines

17.5.1 ADC Basic Operation (Polling Mode)

C language code
//Operating frequency for test is 11.0592MHz
#include "reg51.h"
#include "intrins.h"
sfr ADC_CONTR =
sfr ADC_RES =
sfr ADC_RESL =
sfr ADCCFG =
sfr P_SW2 =
#define ADCTIM (*(unsigned cha volatile xdata *)0xfea8)
sfr P0M1 =
sfr P0M0 =
sfr P1M1 =
sfr P1M0 =
sfr P2M1 =
sfr P2M0 =
sfr P3M1 =
sfr P3M0 =
sfr P4M1 =
1
2
3
4
5
External analog 6
signal input 7
8
System power
9
(Can be powered from USB) 10
103
11
12
13
Vin 14
15
Power On 16
17
Vcc 18
19
20
47u C?
System clock<=10MHz
C? 104(0.1uF)
0xbc;
0xbd;
0xbe;
0xde;
0xba;
0x93;
0x94;
0x91;
0x92;
0x95;
0x96;
0xb1;
0xb2;
0xb3;
40
P0.3 P0.2
39
P0.4 P0.1
38
P0.5 P0.0
37
P0.6 P2.7
36
P0.7 P2.6
35
P1.0 P2.5
34
P1.1 P2.4
33
P1.2 P2.3
32
P1.3 P2.2
31
P1.4 P2.1
30
P1.5 P2.0
29
P1.6 P4.1
28
P1.7 P3.7
27
AGnd P3.6
26
AVref P3.5
25
AVcc P3.4
24
P5.4 P3.3
23
Vcc P3.2
22
P5.5 P3.1
21
Gnd P3.0
STC8A8K64D4
System clock>10MHz
103(0.01uF)
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