ATmega16M1 Automotive Atmel Corporation, ATmega16M1 Automotive Datasheet - Page 202

• 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

16.12 Examples of CAN Baud Rate Setting
Table 16-2.
202
f
(MHz)
16.000
12.000
CLK
IO
Atmel ATmega16/32/64/M1/C1
1000
500
250
200
125
100
1000
500
250
200
125
100
(Kbps)
CAN
Rate
Examples of CAN Baud Rate Settings for Commonly Frequencies
Sampling
69 %
67 %
Point
75 %
75 %
75 %
75 %
75 %
75 %
75 %
75 %
75 %
75 %
75 %
(1)
(1)
The CAN bus requires very accurate timing especially for high baud rates. It is recommended
to use only an external crystal for CAN operations.
(Refer to
page 192
Description
0.083333
0.166666
0.416666
0.833333
0.0625
0.3125
0.125
0.125
0.250
0.250
0.500
0.625
0.500
1.000
0.625
1.250
0.250
0.250
0.500
0.250
0.500
1.000
0.500
(µs)
TQ
“Bit Timing” on page 176
to
page 194
(TQ)
Tbit
16
16
16
16
16
16
12
12
16
20
12
16
20
12
8
8
8
8
8
8
x
8
8
8
for “CAN Bit Timing Registers”).
Tprs
(TQ)
7
3
7
3
7
3
7
3
7
3
7
3
5
5
3
7
3
8
5
7
3
8
5
Tph1
(TQ)
and
4
2
4
2
4
2
4
2
4
2
4
2
3
3
2
4
2
6
3
4
2
6
3
Segments
“Baud Rate” on page 177
Tph2
(TQ)
4
2
4
2
4
2
4
2
4
2
4
2
3
3
2
4
2
5
3
4
2
5
3
- - - n o
Tsjw
(TQ)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
d a t a - - -
CANBT1
0x0E
0x0E
0x1E
0x0A
0x0A
0x0A
0x00
0x02
0x02
0x06
0x06
0x08
0x12
0x12
0x26
0x00
0x02
0x04
0x04
0x04
0x08
0x16
0x12
for timing description and
Registers
CANBT2
0x0C
0x0C
0x0C
0x0C
0x0C
0x0C
0x0C
0x0C
0x0E
0x0E
0x04
0x04
0x04
0x04
0x04
0x04
0x08
0x08
0x04
0x04
0x08
0x04
0x08
7647G–AVR–09/11
CANBT3
0x36
0x24
0x4B
0x4B
0x13
0x37
0x13
0x37
0x13
0x37
0x13
0x37
0x13
0x37
0x13
0x25
0x13
0x37
0x13
0x25
0x37
0x13
0x25
(2)
(2)