ATmega32M1 Atmel Corporation, ATmega32M1 Datasheet - Page 207

• Manufacturer Part Number: ATmega32M1
• Manufacturer: Atmel Corporation

Specifications of ATmega32M1

• Flash (kbytes): 32 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): 2
• Eeprom (bytes): 1024
• 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

20.5.5
20.5.5.1
Figure 20-7. Busy Signal in LIN Mode
8209D–AVR–11/10
1) LBUSY
2) LBUSY
3) LBUSY
LIN bus
Busy Signal
Busy Signal in LIN Mode
LCMD=Tx Header
BREAK
Node providing the master task
Field
Table 20-3.
The LIN configuration is independent of the programmed LIN protocol.
The listening mode connects the internal Tx LIN and the internal Rx LIN together. In this mode,
the TXLIN output pin is disabled and the RXLIN input pin is always enabled. The same scheme
is available in UART mode.
Figure 20-6. Listening Mode
LBUSY bit flag in LINSIR register is the image of the BUSY signal. It is set and cleared by hard-
ware. It signals that the controller is busy with LIN or UART communication.
Mode
UART
HEADER
SYNC
LCONF[1..0]
LISTEN
Configuration Table versus Mode
Rx LIN
00
01
10
11
Tx LIN
internal
internal
Node providing neither the master task, neither a slave task
Field
b
b
b
b
PROTECTED
IDENTIFIER
LIDOK
Field
FRAME SLOT
1
0
Listening mode, 8-bit data, no parity & 1 stop-bit
LCMD=Tx or Rx Response
DATA-0
8-bit data, even parity & 1 stop-bit
8-bit data, odd parity & 1 stop-bit
8-bit data, no parity & 1 stop-bit
ATmega16M1/32M1/64M1
Field
Configuration
Node providing a slave task
RESPONSE
DATA-n
RXLIN
TXLIN
Field
LTXOK or LRXOK
CHECKSUM
Field
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