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| 型號： | AMIS-30624PGA |
| 英文描述： | I2C Microstepping Motordriver |
| 中文描述： | 的I2C微步Motordriver |
| 文件頁數(shù)： | 21/56頁 |
| 文件大小： | 1256K |
| 代理商： | AMIS-30624PGA |
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AMIS-30624 I
2
C Microstepping Motordriver
Data Sheet
As illustrated in Table 15, the state is depending on the previous state, the condition of the two switch controls (DriveLS and DriveHS)
and the output of HW_Cmp. Figure 11 shows an example of a practical case where a connection to VBAT is interrupted.
HW_Cmp
t
R
th
Tsw = 1024
μ
s
DriveHS
"R"-Comp
t
t
t
DriveLS
State
t
Tsw_on = 128
μ
s
Condition
R2VBAT
OPEN
H
L
F
H
H
H
H
R2VBAT
R2GND
F
Figure 11: Timing Diagram Showing the Change in States for HW Comparator
R2VBAT
A resistor is connected between VBAT and HW. Every 1024
μ
s S
BOT
is closed for a period of 128
μ
s and a current is sensed. The output
of the I
R converter is low and the HW_Cmp output is high. Assuming the previous state was floating, the internal LOGIC will
interpret this as a change of state and the new state will be High (see also Table 15). The next time S
BOT
is closed the same condition is
observed. The previous state was high, so based on Table 15 the new state remains unchanged. This high state will be interpreted as
HW address = 1.
OPEN
In case the HW connection is lost (broken wire, bad contact in connector) the next time S
BOT
is closed this will be sensed. There will be
no current, the output of the corresponding I
R converter is high and the HW_Cmp will be low. The previous state was High. Based
on Table 15 one can see that the state changes to float. This will trigger a motion to secure position after a debounce time of 64 ms.
This prevents false triggering in case of micro interruptions of the power supply. See also
Electrical Transient Conduction Along Supply
Lines
.
R2GND
If a resistor is connected between HW and the GND, a current is sensed every 1024
μ
s when S
TOP
is closed. The output of the top I
R
converter is low and as a result the HW_Cmp output switches to high. Again based on the stated diagram in Table 15 one can see that
the state will change to low. This low state will be interpreted as HW address = 0.
H
F
F
H
H
L
L
t
PC20060926.2
21
AMI Semiconductor
– Apr. 2007, Rev 3.1, M-20664-003
www.amis.com
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AMIS-30624PNA | 制造商:AMI 制造商全稱:AMI 功能描述:I2C Microstepping Motordriver |
| AMIS-3062X | 制造商:AMI 制造商全稱:AMI 功能描述:Bus Microstepping Motordriver Family |
| AMIS3062XAGEVK | 功能描述:電源管理IC開發(fā)工具 AMIS-3062x Automotive Eval Kit RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| AMIS3062XGEVK | 功能描述:電源管理IC開發(fā)工具 AMIS30624 eval kit mother board RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| AMIS-30660 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:High Speed CAN Transceiver |
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