ATA6844-DK Atmel, ATA6844-DK Datasheet - Page 15

• 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

8.3
9236A–AUTO–08/11
Power Board Startup
Table 8-3.
Table 8-4.
Table 8-5.
For startup, several test pins are prepared to monitor.
Potentiometer
• As soon as the kit is powered, 5V is present at the VINT test pin.
• If the Atmel
• If VCC is in a valid range and the watchdog receives correct triggers within the watchdog
• Finally, correct function can be monitored at the charge pump output pin. The voltage there
VMODE jumper setting, the VCC pin voltage level is 3.3V or 5V.
window, the NRESET signal remains stable at the VCC level.
is 15V above supply voltage. The charge pump frequency is approximately 400kHz.
D101
D102
D105
LED
R106
Switch
D1
D6
R6
SW1
Board Switches
Board Potentiometers
LEDs
®
ATA6843/ATA6844 is in normal mode, VCC is present. Depending on the
USB status
Function Comment
Function
SCREF
POWER
STATUS
Speed
COAST
Function
High voltage wake-up switch – EN pin
VCC
Input source for SCREF threshold, depending on J4 jumper setting
ADC input for ATmega32M1, in the enclosed firmware assigned as target
speed input
Comment
ON: Power board is supplied
ON: Coast active
Coast can only be set by the ATmega32M1 microcontroller
ON: VCC valid, Atmel ATA6844 in normal mode
OFF: No VCC present, Atmel ATA6844 in standby mode
ON: BLDC back EMF feedback loop locked
Toggling: character sent
The LED D105 changes status on each transmit in both directions,
from and to PC
Atmel ATA6843/ATA6844
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