AMIS30623C623BRG ON Semiconductor, AMIS30623C623BRG Datasheet - Page 19

• Manufacturer Part Number: AMIS30623C623BRG
• Description: IC MOTOR DRIVER/CTLR 32-QFP
• Manufacturer: ON Semiconductor

Specifications of AMIS30623C623BRG

• Applications: Stepper Motor Driver
• Number Of Outputs: 1
• Current - Output: 800mA
• Voltage - Supply: 6.5 V ~ 29 V
• Operating Temperature: -40°C ~ 165°C
• Mounting Type: Surface Mount
• Package / Case: 32-VSQFP
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Load: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

R2VBAT
1024 ms S
of the I ⇒ R converter is low and the HW2_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
the same conditions are observed. The previous state was
high so based on Table 15 the new state remains unchanged.
This high state will be interpreted as HW2 address = 1.
OPEN
contact in connector) the next time S
be sensed. There will be no current, the output of the
corresponding I ⇒ R converter is high and the HW2_Cmp
will be low. The previous state was high. Based in Table 15
one can see that the state changes to float. This will trigger
A resistor is connected between VBAT and HW2. Every
In case the HW2 connection is lost (broken wire, bad
HW2_Cmp
“R”−Comp
Condition
DriveHS
DriveLS
State
R
BOT
th
is closed and a current is sensed. The output
Figure 11. Timing Diagram Showing the Change in States for HW2 Comparator
Tsw_on = 128 ms
Tsw = 1024 ms
R2 VBAT
BOT
is closed, this will
BOT
is closed
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OPEN
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a motion to secure position after a debounce time of 64 ms,
which prevents false triggering in case of micro−
interruptions of the power supply.
R2GND
current is sensed every 1024 ms when S
output of the top I ⇒ R converter is low and as a result the
HW2_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 HW2
address = 0.
External Switch SWI
identical to HW2. The major difference is in the limited
number of states. Only open or closed is recognised leading
to respectively ESW = 0 and ESW = 1.
If a resistor is connected between HW2 and the GND, a
As illustrated in Figure 12 the SWI comparator is almost
R2 VBAT
R2 GND
TOP
is closed. The
t
t
t
t
t
t