ATA6602 ATMEL Corporation, ATA6602 Datasheet - Page 181

• Manufacturer Part Number: ATA6602
• Description: LIN and Microcontroller System-In-Package: LIN Transceiver, integrated 5V/50 mA voltage regulator, window watchdog and automotive AVR ATmega88 (8 kBytes Flash); green QFN48 package.
• Manufacturer: ATMEL Corporation

4.16
4921C–AUTO–01/07
Serial Peripheral Interface – SPI
The Serial Peripheral Interface (SPI) allows high-speed synchronous data transfer between the
ATA6602/ATA6603 and peripheral devices or between several AVR devices. The
ATA6602/ATA6603 SPI includes the following features:
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The USART can also be used in Master SPI mode (see
The PRSPI bit in
enable SPI module.
Figure 4-65. SPI Block Diagram
Note:
Full-duplex, Three-wire Synchronous Data Transfer
Master or Slave Operation
LSB First or MSB First Data Transfer
Seven Programmable Bit Rates
End of Transmission Interrupt Flag
Write Collision Flag Protection
Wake-up from Idle Mode
Double Speed (CK/2) Master SPI Mode
1. Refer to
/2/4/8/16/32/64/128
SPI STATUS REGISTER
“Power Reduction Register - PRR” on page 63
Table 4-32 on page 94
DIVIDER
SELECT
XTAL
SPI CONTROL
SPI CLOCK (MASTER)
SPI INTERRUPT
REQUEST
(1)
MSTR
SPE
8
for SPI pin placement.
MSB
INTERNAL
DATA BUS
8
8 BIT SHIFT REGISTER
READ DATA BUFFER
8
SPI CONTROL REGISTER
CLOCK
LOGIC
“USART in SPI Mode” on page
LSB
CLOCK
ATA6602/ATA6603
M
M
S
S
S
M
must be written to zero to
MOSI
MISO
SCK
SS
217).
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