ATA6613-EK Atmel, ATA6613-EK Datasheet - Page 236

• Manufacturer Part Number: ATA6613-EK
• Description: BOARD DEMO LIN-MCM FOR ATA6613
• Manufacturer: Atmel

Specifications of ATA6613-EK

• Main Purpose: Interface, LIN + MCU
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: ATA6613
• Primary Attributes: LIN-SBC (System-Basis-Chip) Transceiver, LIN 2.0, Voltage Regulator, Window Watchdog
• Secondary Attributes: 16 kB Flash, 4 Power Modes: Pre-Normal, Normal, Sleep, Silent, 48-QFN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

6.19.5
6.19.5.1
236
Atmel ATA6612/ATA6613
Overview of the TWI Module
SCL and SDA Pins
The TWI module is comprised of several submodules, as shown in
drawn in a thick line are accessible through the AVR
Figure 6-85. Overview of the TWI Module
These pins interface the AVR TWI with the rest of the MCU system. The output drivers contain
a slew-rate limiter in order to conform to the TWI specification. The input stages contain a
spike suppression unit removing spikes shorter than 50 ns. Note that the internal pull-ups in
the AVR pads can be enabled by setting the PORT bits corresponding to the SCL and SDA
pins, as explained in the I/O Port section. The internal pull-ups can in some systems eliminate
the need for external ones.
Slew-rate
Address Match Unit
Arbitration detection
Control
START / STOP
Address Comparator
Address Register
Control
SCL
(TWAR)
Spike
Filter
Bus Interface Unit
Address/Data Shift
Spike Suppression
Register (TWDR)
Slew-rate
Control
SDA
Status Register
Ack
Spike
Filter
(TWSR)
®
data bus.
State Machine and
Control Unit
Status control
Bit Rate Generator
Control Register
Bit Rate Register
Prescaler
(TWCR)
Figure
(TWBR)
6-85. All registers
9111H–AUTO–01/11