ATA6844-DK Atmel, ATA6844-DK Datasheet - Page 21

• Manufacturer Part Number: ATA6844-DK
• Description: Power Management IC Development Tools BLDC Motor Drvr Brd
• Manufacturer: Atmel
• Type: Motor / Motion Controllers & Driversr

Specifications of ATA6844-DK

• Rohs: yes
• Product: Development Kits
• Tool Is For Evaluation Of: ATA6844, ATmega32M1, ATmega32U2
• Input Voltage: 3.3 V, 5 V, 12 V
• Description/function: Atmel ATA6844-DK BLDC Motor Control Kit
• Interface Type: LIN, UART, USB
• Factory Pack Quantity: 1

9.2
9.3
9236A–AUTO–08/11
Demonstration Software
Evaluation Software
Every terminal software such as “Hyperterminal” within the Microsoft Windows operating sys-
tem is capable of working as a user interface. The properties of the COM port are 9600Baud,
8 data bits, non-parity check, 1 stop bit and non-flow control.
The BLDC motor starts automatically after powering up the application kit. The final stage of
the ramp-up process is locking in the back EMF feedback loop. The motor speed is controlled
by a speed regulation loop. The target speed can be adjusted by the speed potentiometer.
The speed can be monitored by a hyper terminal. With any key pressed, the display of the cur-
rent speed can be toggled on or off.
The default mode of the evaluation software acts like the demonstration software, ramp-up is
done automatically.
Access by hyperterminal allows advanced control of the regulation loop.
entire command list. The automatic startup control
by switching to debug mode (pressing key <d>). Switching between the various startup func-
tions must be done manually according to the command
keys allow the timing parameters to be adjusted during startup. The parameters are calculated
automatically only in the final mode MC_LOCKED.
Table 9-1.
Key <parameter>
S <xxxx>
Space
v <x>
R
D
C
s
d
?
p
+
_
c
*
r
l
i
I
-
Evaluation Software: UART Command Control
Function
Read current RPM
RUN (clockwise)
RUN (counterclockwise)
STOP motor
Set speed to xxxx rpm
Set SCREV voltage
DEBUG on
DEBUG off
Read status of DG pins
Force back EMF state MC_LOCKED
Force back EMF state MC_PRELOCKED1
Enable AC interrupts
Disable AC interrupts
Increment zero crossing delay
Decrement zero crossing delay
Increment PWM duty cycle
Decrement PWM duty cycle
Emergency shutdown of motor: Activate Coast function
Emergency shutdown of motor: Deactivate Coast function
Atmel ATA6843/ATA6844
(Figure 9-6 on page
Table
9-1. The <+>, <->, <*> and <_>
22) can be interrupted
Table 9-1
shows the
21