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AS8846 датащи(PDF) 18 Page - ams AG

номер детали AS8846
подробное описание детали  Programmable PWM DC Motor Driver / Controller
PDF  35 Pages
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производитель  AMSCO [ams AG]
домашняя страница  http://www.ams.com
Logo AMSCO - ams AG

AS8846 датащи(HTML) 18 Page - ams AG

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Data Sheet AS8446
Revision 1.8, Date 2005-03-17
Page 18 of 35
R7 = 0
à AV_TRIMM = 70
R7 = 1
à AV_TRIMM = 71
R7 = 2
à AV_TRIMM = 72
:
R7 = 10
à AV_TRIMM = 80
(default value)
R7 = 11
à AV_TRIMM = 81
:
R7 = 19
à AV_TRIMM = 89
R7 = 20
à AV_TRIMM = 90
R7 > 20
à AV_TRIMM = 90
Register write by: Three-Wire Interface
Register read by: Three-Wire Interface and current measurement unit
-
-
-
d4
d3
d2
d1
d0
R7<4:0>
AV_TRIMM
-
-
-
0101
0
start up values
R8 = 0
à AV_RANGE-norm = 1
(default value)
R8 = 1
à AV_RANGE-norm = 2
R8 = 2
à AV_RANGE-norm = 3
R8 = 3
à AV_RANGE-norm = 4
Register write by: Three-Wire Interface
Register read by: Three-Wire Interface and current measurement unit
---
---
d1
d0
R8<1:0>
AV_RANGE_norm
---
---
0
0
start up values
Threshold value of the internal over current detection
Def.: Vocmax = 4/5 * VDD
(typ. 4.0 V)
Vocstep = (4/5 * VDD) / 8
(typ. 0.5 V)
R9 = 0
à OVERC_level = Vocmax
(typ. 4.0 V)
R9 = 1
à OVERC_level = Vocmax – Vocstep
(typ. 3.5 V)
R9 = 2
à OVERC_level = Vocmax - 2*Vocstep
(typ. 3.0 V)
R9 = 3
à OVERC_level = Vocmax - 3*Vocstep
(typ. 2.5 V)
:
R9 = 7
à OVERC_level = Vocmax - 7*Vocstep
(typ. 0.5 V)
Register write by: Three-Wire Interface
Register read by: Three-Wire Interface and current measurement unit
-
-
-
-
-
d2
d1
d0
R9<2:0>
OVERC_level
---
--
0
1
1
start up values
Voltage amplification factor2 of the over current analogue measurement
output (A_overc)
R10 = 0
à AV_RANGE_over = 1 * 1/4
(default value)
R10 = 1
à AV_RANGE_over = 2 * 1/4
R10 = 2
à AV_RANGE_over = 3 * 1/4
R10 = 3
à AV_RANGE_over = 4 * 1/4
Register write by: Three-Wire Interface
Register read by: Three-Wire Interface and current measurement unit
---
---
d1
d0
R10<1:0>
AV_RANGE_over
---
---
0
0
start up values



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