ATA6823-DK Atmel, ATA6823-DK Datasheet - Page 10

• Manufacturer Part Number: ATA6823-DK
• Description: BOARD EVALUATION FOR ATA6823
• Manufacturer: Atmel
• Type: PWM Controllersr

Specifications of ATA6823-DK

• Main Purpose: Power Management, Motor Control
• Embedded: No
• Utilized Ic / Part: ATA6823
• Primary Attributes: Brush DC Motors, 8 ~ 18V, LIN Interface, Watchdog, 5V Regulator
• Secondary Attributes: Cross Conduction, Under/Over Voltage, Short Circuit, & Temperature Protection
• Input Voltage: 8 V to 18 V
• Product: Power Management Modules
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: ATA6823

3.6
3.6.1
Figure 3-5.
10
LIN Transceiver
Atmel ATA6823
Transmit Mode
(input to transmitting Node)
(output of receiving Node 1)
(output of receiving Node 2)
TX
RX
RX
V
(Transceiver
supply
of transmitting
node)
S
Definition of Bus Timing Parameters
TH
TH
TH
TH
Rec(max)
Dom(max)
Rec(min)
Dom(min)
A bi-directional bus interface is implemented for data transfer between the LIN bus and the
local LIN protocol controller.
The transceiver consists of a low side driver (1.2V at 40mA) with slew rate control, wave shap-
ing, current limitation, and a high-voltage comparator followed by a debouncing unit in the
receiver.
During transmission, the data at the pin TX will be transferred to the bus driver to generate a
bus signal on pin LIN.
To minimize the electromagnetic emission of the bus line, the bus driver has an integrated
slew rate control and wave-shaping unit. Transmission will be interrupted in the following
cases:
• Thermal shutdown active or overtemperature LIN active
• Sleep mode
t
Bit
t
rx_pdf(1)
LIN Bus Signal
t
t
Bus_dom(min)
Bus_dom(max)
t
Bit
t
rx_pdr(2)
t
Bus_rec(min)
t
Bus_rec(max)
t
rx_pdr(1)
t
Bit
Thresholds of
receiving node 1
Thresholds of
receiving node 2
t
rx_pdf(2)
4856K–AUTO–01/11