ATA6603P-PLQW Atmel, ATA6603P-PLQW Datasheet - Page 248
![MCU W/LIN TXRX REG WTCHDG 48-QFN](/photos/6/82/68297/48-qfn_sml.jpg)
ATA6603P-PLQW
Manufacturer Part Number
ATA6603P-PLQW
Description
MCU W/LIN TXRX REG WTCHDG 48-QFN
Manufacturer
Atmel
Series
AVR® ATA66 LIN-SBCr
Datasheet
1.ATA6603P-PLQW.pdf
(360 pages)
Specifications of ATA6603P-PLQW
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
23
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
48-QFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATA6603P-PLQW
Manufacturer:
ATMEL
Quantity:
2 000
Part Number:
ATA6603P-PLQW
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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248
ATA6602/ATA6603
Figure 4-90. Data Transfer in Master Receiver Mode
A START condition is sent by writing the following value to TWCR:
TWEN must be written to one to enable the 2-wire Serial Interface, TWSTA must be written to
one to transmit a START condition and TWINT must be set to clear the TWINT Flag. The TWI
will then test the 2-wire Serial Bus and generate a START condition as soon as the bus
becomes free. After a START condition has been transmitted, the TWINT Flag is set by hard-
ware, and the status code in TWSR will be 0x08 (see
MR mode, SLA+R must be transmitted. This is done by writing SLA+R to TWDR. Thereafter the
TWINT bit should be cleared (by writing it to one) to continue the transfer. This is accomplished
by writing the following value to TWCR:
When SLA+R have been transmitted and an acknowledgement bit has been received, TWINT is
set again and a number of status codes in TWSR are possible. Possible status codes in Master
mode are 0x38, 0x40, or 0x48. The appropriate action to be taken for each of these status codes
is detailed in
when the TWINT Flag is set high by hardware. This scheme is repeated until the last byte has
been received. After the last byte has been received, the MR should inform the ST by sending a
NACK after the last received data byte. The transfer is ended by generating a STOP condition or
a repeated START condition. A STOP condition is generated by writing the following value to
TWCR:
A REPEATED START condition is generated by writing the following value to TWCR:
SDA
SCL
TWCR
TWCR
TWCR
TWCR
value
value
value
value
TWINT
TWINT
Table 4-91 on page
TWINT
TWINT
Device 1
RECEIVER
MASTER
1
1
1
1
TWEA
TWEA
TWEA
TWEA
X
X
X
X
TRANSMITTER
Device 2
SLAVE
TWSTA
TWSTA
TWSTA
TWSTA
249. Received data can be read from the TWDR Register
1
0
0
1
Device 3
TWSTO
TWSTO
TWSTO
TWSTO
0
0
1
0
........
Table 4-90 on page
TWWC
TWWC
TWWC
TWWC
X
X
X
X
Device n
V
TWEN
TWEN
TWEN
TWEN
CC
1
1
1
1
246). In order to enter
R1
–
0
–
0
–
0
–
0
4921E–AUTO–09/09
R2
TWIE
TWIE
TWIE
TWIE
X
X
X
X
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