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AMIS-30624_13 Datasheet, PDF (22/52 Pages) ON Semiconductor – I2C Micro-stepping Motor Driver | |||
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DriveHS
AMISâ30624, NCV70624
Tsw = 1024 ms
512 ms
t
Tsw_on = 128 ms
DriveLS
t
âRââComp
Rth
t
SWI_Cmp
120 ms
t
ESW
0
1
1
1
t
ActPos
t
Figure 13. Simplified Timing Diagram Showing the Change in States for SWI Comparator
Main Control and Register, OTP memory + ROM
Powerâup Phase
Powerâup phase of the AMISâ30624/NCV70624 will not
exceed 10 ms. After this phase, the
AMISâ30624/NCV70624 is in standby mode, ready to
receive I2C messages and execute the associated commands.
After powerâup, the registers and flags are in the reset state,
while some of them are being loaded with the OTP memory
content (see Table 19: RAM Registers).
Reset
After powerâup, or after a reset occurrence (e.g. a
microâcut on pin VBB has made VDD to go below VddReset
level), the Hâbridges will be in highâimpedance mode, and
the registers and flags will be in a predetermined position.
This is documented in Table 19: RAM Registers and
Table 20: Flags Table.
Softâstop
A softâstop is an immediate interruption of a motion, but
with a deceleration phase. At the end of this action, the
register <TagPos> is loaded with the value contained in
register <ActPos>, see Table 19: Ram Registers). The
circuit is then ready to execute a new positioning command,
provided thermal and electrical conditions allow for it.
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