ATmega64C1 Automotive Atmel Corporation, ATmega64C1 Automotive Datasheet - Page 216

• Manufacturer Part Number: ATmega64C1 Automotive
• Manufacturer: Atmel Corporation

Specifications of ATmega64C1 Automotive

• Flash (kbytes): 64 Kbytes
• Pin Count: 32
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 12
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 27
• Ext Interrupts: 27
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Uart: 1
• Can: 1
• Lin: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 11
• Adc Resolution (bits): 10
• Adc Speed (ksps): 125
• Analog Comparators: 4
• Resistive Touch Screen: No
• Dac Channels: 1
• Dac Resolution (bits): 10
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 4
• Eeprom (bytes): 2048
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 150
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 4
• Input Capture Channels: 1
• Pwm Channels: 4
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

17.5.7.1
17.5.7.2
17.5.7.3
216
Atmel ATmega16/32/64/M1/C1
Data Length in LIN 2.1
Data Length in LIN 1.3
Data Length in Rx Response
LRXDL (*)
LTXDL (*)
LIN bus
LBUSY
Figure 17-9. LIN2.1 - Rx Response - No error
(*) : LRXDL & LTXDL updated by user
• If LTXDL[3..0]=0 only the CHECKSUM will be sent,
• If LRXDL[3..0]=0 the first byte received will be interpreted as the CHECKSUM,
• If LTXDL[3..0] or LRXDL[3..0] >8, values will be forced to 8 after the command setting and
• 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
before sending or receiving of the first byte.
data length code contained in the received PROTECTED IDENTIFIER (LRXDL = LTXDL).
number of received bytes without error,
unchanged (and LTXDL = LRXDL).
LIDOK
LINDLR=0x?4
?
4
DATA-0
1
st
Byte
LCMD=Rx Response
0
DATA-1
2
nd
1
Byte
DATA-2
3
rd
2
Byte
DATA-3
4
th
3
Byte
LCMD2..0=000
CHECKSUM
4
7647G–AVR–09/11
b
LRXOK