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參數(shù)資料
| 型號(hào)： | AA2020A |
| 英文描述： | Controller Miscellaneous - Datasheet Reference |
| 中文描述： | 控制器雜項(xiàng)-數(shù)據(jù)表參考 |
| 文件頁(yè)數(shù)： | 4/7頁(yè) |
| 文件大?。?/td> | 296K |
| 代理商： | AA2020A |
5
6
AA2020A PIN DESCRIPTION
PIN
NAME
DESCRIPTION
1
Vdd
Power (+5Vdc)
2
Vdd
Power (+5Vdc)
3
OP
Output Polarity - When this input is logic "1", positive
true phase outputs are selected. When this input is
logic "0", negative true phase outputs are selected.
Only OUT1-OUT4 are affected. OUT5 and OUT6
are always positive true.
4
OUT 5
High Voltage output signal for phase 1 and phase 3.
This output is used to turn on a high-side switch for
phases 1 and 3. This output goes high every time
phase 1 or 3 turns on. This output can only be turned
off when R13 goes low.
5
IN 2
CCW input (Phase 2 input) - Pulses applied to this
input cause the chip to sequence in the
counterclockwise direction. This input is Phase 2 In
when using phase inputs.
6
OUT 1
Phase 1 output
7
OUT 3
Phase 3 output
8
IN 4
Half-step/Full-step (Phase 4 input) - A logic "1" on
this input selects half-step operation when using
Clock inputs. A logic "0" on this input select full-step
operation. This input is Phase 4 IN when using
phase inputs.
9
OSC IN
Oscillator Input - see section on oscillator.
10
OSC OUT
Oscillator Output - see section on oscillator.
11
PRESET
Preset for power up - see section on PRESET
12
Vss
0Vdc
13
Vdd
Power (+5Vdc)
14
ON/OFF
Motor ON/OFF -A logic "1" on this input allows the
to function normally. A logic "0" on this inputs turns
off all outputs.
15
OUT 6
High Voltage signal for phase 2 and phase 4. This
output is used to turn on a high-side switch for
phases 2 and 4. This output goes high every time
phase 2 or 4 turns on. This output can only be turned
off when R24 goes low.
16
R
Reset input for phase 1 and phase 3 high voltage -
when this input goes low, OUT5 turns off.
17
R24
Reset input for phase 2 and phase 4 high voltage -
when this input goes low, OUT6 turns off.
18
OUT 4
Phase 4 output
19
OUT 2
Phase 2 output
20
IN 3
selects clockwise direction when using Clock inputs.
A logic "0" on this input selects counterclockwise
direction when using Clock inputs. This input is
Phase 3 IN when using Phase inputs.
Direction/ Phase 3 input - A logic "1" on this input
21
C/P
Clock inputs. A logic "0" on this input selects Phase
inputs.
Clock/Phase Inputs - A logic "1" on this input selects
22
IP
Input Polarity - A logic "1" on this input selects
negative going Clock inputs or negative true phase
inputs. A logic "0" on this input selects positive
going Clock inputs or positive true phase inputs.
23
IN 1
Clock In/ Phase 1 input - Pulses applied to this input
cause the chip to sequence in the clockwise direction
when using Clock inputs. This input is Phase 1 IN
when using Phase inputs.
24
Vss
0Vdc
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