ATmega16M1 Atmel Corporation, ATmega16M1 Datasheet - Page 210

• Manufacturer Part Number: ATmega16M1
• Manufacturer: Atmel Corporation

Specifications of ATmega16M1

• Flash (kbytes): 16 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): 1
• Eeprom (bytes): 512
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• 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: 14
• Input Capture Channels: 1
• Pwm Channels: 10
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

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