ATmega16M1 Automotive Atmel Corporation, ATmega16M1 Automotive Datasheet - Page 218

• Manufacturer Part Number: ATmega16M1 Automotive
• Manufacturer: Atmel Corporation

Specifications of ATmega16M1 Automotive

• 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 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: 14
• Input Capture Channels: 1
• Pwm Channels: 10
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

17.5.8
17.5.9
218
Atmel ATmega16/32/64/M1/C1
xxOK Flags
xxERR Flags
There are three xxOK flags in LINSIR register:
These flags can generate interrupts if the corresponding enable interrupt bit is set in the LINE-
NIR register (see
LERR bit of the LINSIR register is an logical ‘OR’ of all the bits of LINERR register (see
tion 17.5.13 “Interrupts” on page
• LIDOK: LIN IDentifier OK
• LRXOK: LIN RX response complete
• LTXOK: LIN TX response complete
• LBERR = LIN Bit ERRor.
• LCERR = LIN Checksum ERRor.
• LPERR = LIN Parity ERRor (identifier).
• LSERR = LIN Synchronization ERRor.
• LFERR = LIN Framing ERRor.
• LTOERR = LIN Time Out ERRor.
It is set at the end of the header, either by the Tx Header function or by the Rx Header. In
LIN 1.3, before generating LIDOK, the controller updates the LRXDL & LTXDL fields in
LINDLR register.
It is not driven in UART mode.
It is set at the end of the response by the Rx Response function in LIN mode and once a
character is received in UART mode.
It is set at the end of the response by the Tx Response function in LIN mode and once a
character has been sent in UART mode.
A unit that is sending a bit on the bus also monitors the bus. A LIN bit error will be flagged
when the bit value that is monitored is different from the bit value that is sent. After
detection of a LIN bit error the transmission is aborted.
A LIN checksum error will be flagged if the inverted modulo-256 sum of all received data
bytes (and the protected identifier in LIN 2.1) added to the checksum does not result in
0xFF.
A LIN parity error in the IDENTIFIER field will be flagged if the value of the parity bits does
not match with the identifier value. (See LP[1:0] bits in
Register - LINIDR” on page
corrupted parity bits and a corrupted identifier. The hardware does not undertake any
correction.
However, the LIN slave application has to solve this as:
- known identifier (parity bits corrupted),
- or corrupted identifier to be ignored,
- or new identifier.
A LIN synchronization error will be flagged if a slave detects the edges of the SYNCH field
outside the given tolerance.
A framing error will be flagged if dominant STOP bit is sampled.
Same function in UART mode.
A time-out error will be flagged if the MESSAGE frame is not fully completed within the
maximum length T
IDENTIFIER fields (see
Section 17.5.13 “Interrupts” on page
Frame_Maximum
Section 17.5.10 “Frame Time Out” on page
228). A LIN slave application does not distinguish between
220). There are eight flags:
by any slave task upon transmission of the SYNCH and
220).
Section 17.6.8 “LIN Identifier
219).
7647G–AVR–09/11
Sec-