ATmega32M1 Automotive Atmel Corporation, ATmega32M1 Automotive Datasheet - Page 202
ATmega32M1 Automotive
Manufacturer Part Number
ATmega32M1 Automotive
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT90CAN128_AUTOMOTIVE.pdf
(225 pages)
2.ATMEGA16M1_AUTOMOTIVE.pdf
(12 pages)
3.ATMEGA16M1_AUTOMOTIVE.pdf
(25 pages)
4.ATMEGA16M1_AUTOMOTIVE.pdf
(367 pages)
Specifications of ATmega32M1 Automotive
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 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
- AT90CAN128_AUTOMOTIVE PDF datasheet
- ATMEGA16M1_AUTOMOTIVE PDF datasheet #2
- ATMEGA16M1_AUTOMOTIVE PDF datasheet #3
- ATMEGA16M1_AUTOMOTIVE PDF datasheet #4
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- Download datasheet (7Mb)
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)
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