AMIS30522C5222G ON Semiconductor, AMIS30522C5222G Datasheet - Page 19

• Manufacturer Part Number: AMIS30522C5222G
• Description: IC MOTOR DVR MICRO STEP 32QFP
• Manufacturer: ON Semiconductor
• Type: Stepper Motor Driverr

Specifications of AMIS30522C5222G

• Applications: Stepper Motor Driver, 2 Phase
• Number Of Outputs: 1
• Current - Output: 1.2A
• Voltage - Supply: 6 V ~ 30 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 32-VSQFP
• Package: 32NQFP EP
• Maximum Operating Current: 8 mA
• 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

Charge Pump Failure
low R
voltages. If the supply voltage is too low or external
components are not properly connected to guarantee R
of the drivers, then the bit <CPFAIL> is set in the SPI Status
Register 0. Also after power−on−reset the charge pump
voltage will need some time to exceed the required
threshold. During that time <CPFAIL> will be set to “1”.
Error Output
external microcontroller. The signal on this output is active
low and the logic combination of:
NOT(ERR) = <TW> OR <TSD> OR <OVCXij> OR
<OVCYij> OR <OPENi> OR <CPFAIL>
Watchdog Function
<WDEN> bit (Table 13). Once this bit has been set to “1”
(watchdog enable), the microcontroller needs to re−write
this bit to clear an internal timer before the watchdog timeout
interval expires. In case the timer is activated and WDEN is
The charge pump is an important circuit that guarantees
This is an open drain digital output to flag a problem to the
The watchdog function is enabled/disabled through
DS(on)
for all drivers, especially for low supply
V
V
DDH
DDL
VDD
VBB
POR/WD pin
Figure 15. Power−on−Reset Timing Diagram
t
PU
http://onsemi.com
DS(on)
t
POR
19
Logic Supply Regulator
external capacitor to supply the digital part of the chip, some
low−voltage analog blocks and external circuitry. The
voltage level is derived from an internal bandgap reference.
To calculate the available drive−current for external
circuitry, the specified I
consumption of internal circuitry (unloaded outputs) and the
loads connected to logic outputs. See Table 5.
Power−On Reset (POR) Function
low” reset for external purposes. At powerup of
AMIS−30522/NCV70522, this pin will be kept low for
some time to reset for example an external microcontroller.
A small analog filter avoids resetting due to spikes or noise
on the V
acknowledged too early (before t
interval (after t
will occur through POR/WD pin. In addition, a warm/cold
boot bit <WD> is available in Table 16 for further processing
when the external microcontroller is alive again.
< t
The 522 has an on−chip 5 V low−drop regulator with
The open drain output pin POR/WD provides an “active
RF
t
PD
DD
supply.
WDTO
t
RF
), then a reset of the microcontroller
load
should be reduced with the
t
t
WDPR
) or not within the