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參數(shù)資料
| 型號： | AA2020A |
| 英文描述： | Controller Miscellaneous - Datasheet Reference |
| 中文描述： | 控制器雜項-數(shù)據(jù)表參考 |
| 文件頁數(shù)： | 5/7頁 |
| 文件大?。?/td> | 296K |
| 代理商： | AA2020A |
+5V
49.9K
124
10K
0.1uF
PRESET
1N4448
7
8
AA2820 PIN DESCRIPTION
OSCILLATOR
PIN
1
2
NAME
Vdd
HV OFF
DESCRIPTION
Power (+5Vdc)
turns high voltage off when logic "0". This does not
reset the high voltage outputs.
Power (+5Vdc)
Output Polarity
high voltage output for phase 1 and phase 3
CCW input/ Phase 2 input
Phase 1 output
Phase 3 output
Half-step/Full-step/ Phase 4 input
Oscillator Input
Oscillator Output
Preset for power up
this output is a logic "1" when both OUT5 and OUT6
are
logic "1"
0Vdc
Power (+5Vdc)
When this input is a logic "0" all clocking is ignored
Motor ON/OFF
high voltage output for phase 2 and phase 4
reset for phase 1 and phase 3 high voltage
reset for phase 2 and phase 4 high voltage
Phase 4 output
Phase 2 output
Direction/ Phase 3 input
Clock/Phase mode
Input polarity
Clock In/ Phase 1 input
this output gives a pulse for each pulse on the clock
input
or for each phase change when using phase inputs
0Vdc
The oscillator frequency must be set at
800kHz to 1.2MHz because of internal
timing. It is strongly recommended to
use the resistor and capacitor values
shown in Figure 5. These values will
produce an oscillator frequency of about
1 Mhz.
3
4
5
6
7
8
9
10
11
12
13
Vdd
OP
OUT 5
IN 2
OUT 1
OUT 3
IN4
OSC IN
OSC OUT
PRESET
OUT56
14
15
16
17
18
19
20
21
22
23
24
25
26
27
Vss
Vdd
RUN/STOP
ON/OFF
OUT 6
R13
R24
OUT 4
OUT 2
IN3
C/P
IP
IN 1
CLOCK OUT
The PRESET pin must be held at
logic "0" upon power up until the
supply for the chip reaches +5V. It is
recommended to use the PRESET
circuit shown in Figure 6. When the
PRESET pin is held at logic "0", all
outputs are off (logic "0"). When the
PRESET pin goes high, the chip
comes up in it's preset condition. In
half-step mode, phase 1 will be on. In
full-step mode, phase 1 and phase 2
will be on.
28
Vss
Inputs in
BOLD
are available only on the AA2820 SOIC.
Figure 5: Oscillator R and C values.
Figure 6: Preset Circuit.
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