ATA6623-EK Atmel, ATA6623-EK Datasheet - Page 2

• Manufacturer Part Number: ATA6623-EK
• Description: BOARD DEMO LIN SBC FOR ATA6623
• Manufacturer: Atmel

Specifications of ATA6623-EK

• Main Purpose: Interface, LIN
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: ATA6623
• Primary Attributes: LIN-SBC (System-Basis-Chip) Transceiver, LIN 2.0, Voltage Regulator
• Secondary Attributes: 4 Power Modes: Pre-Normal, Normal, Sleep, Silent, 8-SOIC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

1.1
1.2
2. Hardware Description
2.1
2.2
2
Development Board Features
Quick Start
Power Supply (VBAT and GND)
Voltage Regulator (VCC)
Atmel ATA6620/23/25
The development board for the Atmel
•
•
•
•
The development board for the Atmel ATA6620/23/25 is shipped with all necessary compo-
nents to start the development of a LIN slave node immediately.
Connecting an external 12V DC power supply with the terminals VBAT and GND puts the
Atmel ATA6620/23/25 in pre-normal mode, where a 5V (3.3V) DC voltage provided by the
internal voltage regulator can be measured between VCC and GND. In addition, the following
voltages can be measured at the pins RXD and LIN:
Table 1-1.
Note that the communication is still inactive during pre-normal mode.
In order to communicate via the LIN bus interface you have to switch to normal mode by
applying the VCC voltage (5V or 3.3V, as appropriate) at pin EN.
In the following chapters only the normal operating conditions will be described. For specific
information concerning one of the mentioned features, refer to the corresponding datasheet.
In order to get the development board running, an external 5.7V to 18V DC power supply is
required between the terminals VBAT and GND. The input circuit is protected against inverse
polarity by the protection diode D1, so that there is a difference of approximately 0.7V between
the VBAT and VS levels.
The internal 5V (3.3V, as appropriate) low-drop voltage regulator is capable of driving loads
with up to 85mA. This makes it possible to supply a microcontroller, sensors and/or other ICs.
The voltage regulator is protected against overloads by means of current limitation and over-
temperature shut-down. In addition, the output voltage is monitored and will cause a reset
signal at pin NRES if it drops below the under-voltage threshold.
All Components Necessary for all Three Circuits Are Mounted
All Pins Are Easily Accessible
Can Be Used for Master or Slave Operation
One Board for Three Devices
Pre-normal mode
Normal mode
Quick Start
ATA6620
VCC
5V
5V
ATA6623
®
VCC
3.3V
3.3V
ATA6620/23/25 supports the following features:
ATA6625
VCC
5V
5V
RXD
High
High
Recessive
Recessive
LIN
4969B–AUTO–03/11
Transceiver
Off
On