AMIS30542C5421RG ON Semiconductor, AMIS30542C5421RG Datasheet - Page 15

• Manufacturer Part Number: AMIS30542C5421RG
• Description: IC MOTOR DVR MICRO STEP 32QFP
• Manufacturer: ON Semiconductor
• Type: Micro Stepping Motor Driverr

Specifications of AMIS30542C5421RG

• Applications: Stepper Motor Driver, 2 Phase
• Number Of Outputs: 1
• Current - Output: 2.2A
• Voltage - Supply: 6 V ~ 30 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 32-VSQFP
• Product: Stepper Motor Controllers / Drivers
• Operating Supply Voltage: 6 V to 30 V
• Supply Current: 8 mA
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Load: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Direction
combination of the DIR input pin and the SPI−controlled
direction bit <DIRCTRL>. (see Table 14 SPI Control
Parameter Overview)
NXT input
one step up/down in the translator table (even when the
motor is disabled: <MOTEN> = 0). Depending on the
Synchronization of Step Mode and NXT Input
(Figure 12), then this is put in effect immediately upon the
first arriving “NXT” input. If the micro−stepping resolution
is increased, the coil currents will be regulated to the nearest
micro−step, according to the fixed grid of the increased
resolution. If however the micro−stepping resolution is
decreased, then it is possible to introduce an offset (or phase
shift) in the micro−step translator table.
The direction of rotation is selected by means of following
Changes on the NXT input will move the motor current
When step mode is re−programmed to another resolution
Start = 0
1/4
SM[2:0] = 011
th
micro step
I
y
Step 1
Step 2
NXT
Step 3
Figure 10. Translator Table: Circular and Square
Figure 11. Translator Position Timing Diagram
I
x
Translator Position
Uncompensated Half Step
Update
Start = 0
SM[2:0] = 101
http://onsemi.com
I
y
15
NXT−polarity bit <NXTP> (see Table 14 SPI Control
Parameter Overview), the next step is initiated either on the
rising edge or the falling edge of the NXT input.
Translator Position
Register 3 (See Table 15 SR3). This is a 7−bit number
equivalent to the 1/32
“Circular Translator Table”. The translator position is
updated immediately following a NXT trigger.
position that is shared both by the old and new resolution
setting, then the offset is zero and micro−stepping is
proceeds according to the translator table.
new resolution setting, then the micro−stepping proceeds
with an offset relative to the translator table (See Figure 12
right hand side).
Step 1
The translator position MSP[6:0] can be read in SPI Status
If the step resolution is decreased at a translator table
If the translator position is not shared both by the old and
Step 2
Step 3
Translator Position
I
x
Update
Start = 0
Step 3
SM[2:0] = 110
Full Step
th
micro−step from see Table 10
I
y
Step 1
Step 2
I
x