ATA6613-EK Atmel, ATA6613-EK Datasheet - Page 229

• 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

6.18.7
9111H–AUTO–01/11
AVR USART MSPIM versus AVR SPI
The USART in MSPIM mode is fully compatible with the AVR
However, since the USART in MSPIM mode reuses the USART resources, the use of the
USART in MSPIM mode is somewhat different compared to the SPI. In addition to differences
of the control register bits, and that only master operation is supported by the USART in
MSPIM mode, the following features differ between the two modules:
A comparison of the USART in MSPIM mode and the SPI pins is shown in
Table 6-86.
• Master mode timing diagram.
• The UCPOLn bit functionality is identical to the SPI CPOL bit.
• The UCPHAn bit functionality is identical to the SPI CPHA bit.
• The UDORDn bit functionality is identical to the SPI DORD bit.
• The USART in MSPIM mode includes (double) buffering of the transmitter. The SPI has no
• The USART in MSPIM mode receiver includes an additional buffer level.
• The SPI WCOL (Write Collision) bit is not included in USART in MSPIM mode.
• The SPI double speed mode (SPI2X) bit is not included. However, the same effect is
• Interrupt timing is not compatible.
• Pin control differs due to the master only operation of the USART in MSPIM mode.
buffer.
achieved by setting UBRRn accordingly.
USART_MSPIM
RxDn
XCKn
TxDn
(N/A)
Comparison of USART in MSPIM Mode and SPI Pins.
MISO
MOSI
SCK
SPI
SS
Atmel ATA6612/ATA6613
Comment
Master Out only
Master In only
(Functionally identical)
Not supported by USART in MSPIM
®
SPI regarding:
Table
6-86.
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