СХТ_Курс_Пос_1
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. 5.1.
5.2.
. N -
N . -
( . 5.2).
, -
, , -
. CLR
, -
, .
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. 5.2.
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5.1 |
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1 . 8- |
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5.6 . |
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1118 3 |
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102
5.3.
( . 5.3).
2–nUREF -
, UREF.
, -
2n . -
2n.
, ,
. -
-
, .
. 5.3.
,
( , , , , -
. .), , , -
,
. 5.4.
– ( ) -
( . 5.5),
.
103
. 5.5.
,
,
N ( . 5.6).
. 5.6.
U /R ,
, -
, :
U = –U •N2 – n/N.
5.4.
572 1 10-
, ( )
. -
. 572 1 ,
, -
, -
, .
104
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UCC ( ) |
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UREF |
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. 5.7. 572 1
8- 1118 3 ( . 5.8) -
. -
100, 500.
-
.
. 5.8. 1118 3
: 1 – 1 ( ); 2…7 – 2…7; 8 – 8 ( ); 12 – -
UCC1; 13 – UCC2; 16 – ; 17 – ; 18 – ( -
); 19 – ( ); 21 – ; 24 – -
; 9…11, 14, 15, 20 – .
105
1118 3
0 70 ° UCC1 = –5.2 ± 5 %, UCC2 = 5.0 ± 5%,
U = –0.81…0.96 U1L= –1.65…1.85 .
101118 2
. 5.9)
-
, .
.
. 5.9. 1118 1
: 1, 40 – -
; 2 – UCC1; 3 – -
; 4 – UREF; 5, 6, 8 – ( -
); 7 – ; 9 – UCC2; 10 – -
; 11 – ; 12 – G; 13 – ; 14 – G; 15, 18, 22, 24, 26, 28, 30, 32, 34, 36, 38 –
D1…D9, D10A, D10B; 16, 19, 23, 25, 27, 29, 31, 33 35, 37, 39 –
D1…D9, D10A, D10B; 17 – 2 ; 20 – ; 21 – L.
1118 2 -
–10 700 ° ( UCC1 = 5 ± 5 %, UCC2 = –5 ± 5 %)
( UCC1 = 0, UCC2 = –5 ± 5%).
106
, . . , -
. -
, , , -
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5.5.
, -
N , . N –
. . 5.10
.
Vin |
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Start |
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Start
. 5.10.
«Start»
. CS ( -
) RD ( ) .
(N > 8)
8- ,
, 167) .
HBEN, , ,
12- DO8...DO11).
, ( 12-
DO0...DO3).
107
5.6.
, -
, 12176 14121,
-
( ).
. 5.11 -
.
, SPI . -
(Master). -
«Start» .
.
.
MISO (Master – Input, Slave – Output) .
Vin |
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Start |
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DO |
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. 5.11. |
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« -
– ».
. ,
-
, ( ,
AD7893
,
). , -
, -
. -
-
, -
.
108
5.7.
, ,
,
. -
-
.
, -
,
, -
.
05/ 06
. 5.12) : , ,
. -
.
-
, 12
.
. 5.12. 05/ 06
-
, -
( . 5.13), -
.
,
.
109
