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PDF AN1717 Data sheet ( Hoja de datos )
| Número de pieza | AN1717 | |
| Descripción | ITC127 MC68HC705MC4 Motion Control Development Board | |
| Fabricantes | Freescale Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AN1717 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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MOTOROLA
SEMICONDUCTORwww.DataSheet4U.com
APPLICATION NOTE
Order this document
by AN1717/D
ITC127
MC68HC705MC4 MOTION CONTROL
DEVELOPMENT BOARD
by Bill Lucas and Warren Schultz
1 Introduction
In motion control systems microprocessors are used to generate pulse-width modulated (PWM) output
signals. It is highly wasteful of computational resources for PWM to be software-generated at inaudible
frequencies. A dedicated hardware module, such as the one found on the MC68HC705MC4 is a much
more efficient way of producing pulse-width modulation. A systems development board for motion con-
trol that uses the MC68HC705MC4’s pulse-width modulator is presented here. It is designed to provide
control signals for driving brush or three-phase brushless dc motors, and to interface directly with
ITC122 and ITC132 power output stages.
Figure 1 ITC127 Development Board
© MOTOROLA INC., 1997
1 page  
www.DataSheet4U.com
OUTPUT
+5 1
2 Atop
GND
FEEDBACK
1
2 Phase A
+5 3
4 Abot
GND 3
4 Phase B
GND 5
6 Btop
GND 5
6 Phase C
GND 7
GND 9
GND 11
8 Bbot
10 Ctop
3 12 Cbot
GND 7
GND 9
GND 11
8 N/C
10 N/C
3 12 Vtemp
GND 13
14 GND
Vbus 13
14 AGND
J1
Isense 15
16 AGND
TOP VIEW
J2
Figure 2 Ribbon Connector Pinouts
5.1 B+ Connector T3
5.1.1 B+
B+ is one of two possible power supply connections. The board requires either a +7.5 to +15 Vdc supply
on this input, or a +5 volt supply on connector T1. One or the other, not both, are required. It is located
on the screw connector T3.
5.1.2 GND
The GND terminal on this connector is intended as the return for power supply B+.
5.2 Input Connector
5.2.1 +5
This input is an alternate input to B+. If it is used, no connection to B+ is required.
5.2.2 GND
There are multiple ground connections. The one adjacent to +5 is intended as the +5 volt return.
5.2.3 AGND
An analog ground for the speed control input is labeled AGND.
AN1717/D
MOTOROLA
5
5 Page 
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DC INPUT
POWER
EXTERNAL SPEED POT
EXTERNAL RUN/DIRECTION
CONTROL
T1
POWER CONNECTOR
+5V
+5 C6
1uF
GND
GND
AGND
SPEED
+5
REV
RUN
GND
AGnd
EXT_SPD_WIPER
1 -D5
EXT_SPD_TOP
EXT_FOR/REV
1 -F4
EXT_RUN/STOP
D1
1N40 02
MC780 5AC
IN VR1 OUT
GROUND
C5
1uF
C8
.1uf
GND
+5_SWITCHED
1 -B5
+5V
R24
470W
LED1
POWER
T3
B+ POWERCONNECTOR
B+
GND
+5V
C9 C20 C25
.1uf .1uf
.1uf
J1
12
34
56
78
9 10
11 12
13 14
OUTPUT CONNECTOR
Atop
Abot
Btop
Bbot
Ctop
Cbot
GND
Atop
1- E2
Abot
1- E2
Btop
1- E1
Bbot
1- E2
Ctop
1- E1
Cbot
1- E1
T2 +5V
+5
GND
HALL1
HALL2
HALL3
C15
.1uf
C21
4 70pf +5V
R25
1k
R26
24
R1
1k
R20
1k
R28
24
R30
24
HALL EFFECT INPUTS
R27 U8
U8
24 9
83
4
C22
4 70pF
R29
24 11
C23
4 70pF
R31
24 13
MC14 584BCP
U8 U8
10 1
2
MC14 584BCP
U8 U8
12 5
6
C24
4 7 0pF
MC14 584BCP
HALL_1
1- D3
HALL_2
1- D2
Vbus
1- C7
Isense
1 -C7
HALL_3
1 -D3
C21
.1uF
+5V
16
15
1 U7
MC74HC36 6
8
+5V
14
U8 MC1458 4BCP
+5V
14
U3, U4
SCI_OUT
1 -F3
SCI_IN
1-E3
+5V
C4
1uF
C3
1uF
MC7 4HC02
C7
.1uF
U6
MC14 5407P
1 1 DI3
1 2 DO3
1 3 DI2
1 4 DO2
1 5 DI1
1 6 DO1
1 7 VDD
18 C1-
1 9 VCC
2 0 C1+
TX3 1 0
RX3 9
TX2 8
RX2 7
TX1 6
RX1 5
VSS 4
C2- 3
GND 2
C2+ 1
+5V
C2
1uF
C1
1uF
77
J2
12
34
56
78
9 10
11 12
13 14
Vtemp
1- B6
15 16
INPUT CONNECTOR AGnd
P1
1 CD
2 RCD <-
3 TX ->
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
DB- 9 CONNECTOR
Figure 4 ITC127 Evaluation Board Schematic (Sheet 2 of 2)
AN1717/D
MOTOROLA
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet AN1717.PDF ] | |
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