ATMEGA32M1-AUR Atmel, ATMEGA32M1-AUR Datasheet - Page 210
ATMEGA32M1-AUR
Manufacturer Part Number
ATMEGA32M1-AUR
Description
IC MPU AVR 32K 20MHZ 32TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA32M1-AUR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
CAN, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 11x10b; D/A 1x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-TQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of I /o
-
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20.5.7.2
20.5.7.3
Figure 20-9. LIN2.1 - Rx Response - No error
20.5.7.4
Figure 20-10. LIN1.3 - Tx Response - No error
210
LRXDL (*)
LTXDL (*)
LRXDL (*)
LTXDL (*)
LIN bus
LIN bus
LBUSY
LBUSY
(*) : LRXDL & LTXDL updated by Rx Response or Tx Response task
(*) : LRXDL & LTXDL updated by user
ATmega16M1/32M1/64M1
Data Length in LIN 1.3
Data Length in Rx Response
Data Length in Tx Response
LIDOK
LIDOK
4
4
LINDLR=0x?4
• LRXDL and LTXDL fields are both hardware updated before setting LIDOK by decoding the
• Via the above mechanism, a length of 0 or >8 is not possible
• The user initializes LRXDL field before setting the Rx Response command
• After setting the Rx Response command, LTXDL is reset by hardware
• LRXDL field will remain unchanged during Rx (during busy signal)
• LTXDL field will count the number of received bytes (during busy signal)
• If an error occurs, Rx stops, the corresponding error flag is set and LTXDL will give the
• If no error occurs, LRXOK is set after the reception of the CHECKSUM, LRXDL will be
?
4
data length code contained in the received PROTECTED IDENTIFIER (LRXDL = LTXDL)
number of received bytes without error
unchanged (and LTXDL = LRXDL)
DATA-0
DATA-0
1
1
LCMD=Tx Response
st
st
Byte
Byte
0
LCMD=Rx Response
0
DATA-1
DATA-1
2
2
nd
nd
1
Byte
Byte
1
DATA-2
3
DATA-2
3
rd
rd
2
Byte
Byte
2
DATA-3
4
DATA-3
4
th
th
3
Byte
Byte
3
LCMD2..0=000
LCMD2..0=000
CHECKSUM
CHECKSUM
4
4
b
b
8209D–AVR–11/10
LRXOK
LTXOK
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