ATmega32M1 Atmel Corporation, ATmega32M1 Datasheet - Page 170
ATmega32M1
Manufacturer Part Number
ATmega32M1
Description
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATmega32M1-15AD
Manufacturer:
ATMEL
Quantity:
1 448
Part Number:
ATmega32M1-15AD
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATmega32M1-AU
Manufacturer:
TYCO
Quantity:
210
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19.5
19.5.1
19.5.2
170
CAN Channel
ATmega16M1/32M1/64M1
Configuration
Bit Timing
The CAN channel can be in:
Figure 19-6. Listening Mode
FSM’s (Finite State Machine) of the CAN channel need to be synchronous to the time quantum.
So, the input clock for bit timing is the clock used into CAN channel FSM’s.
Field and segment abbreviations:
• Enabled mode
• Standby mode
• Listening mode
• BRP: Baud Rate Prescaler
• TQ: Time Quantum (output of Baud Rate Prescaler)
• SYNS: SYNchronization Segment is 1 TQ long
• PRS: PRopagation time Segment is programmable to be 1, 2, ..., 8 TQ long
• PHS1: PHase Segment 1 is programmable to be 1, 2, ..., 8 TQ long
• PHS2: PHase Segment 2 is programmable to be ≤ PHS1 and ≥ INFORMATION
• INFORMATION PROCESSING TIME is 2 TQ
• SJW: (Re) Synchronization Jump Width is programmable between 1 and min (4, PHS1)
PROCESSING TIME
– the CAN channel (internal TxCAN & RxCAN) is enabled
– the input clock is enabled
– the transmitter constantly provides a recessive level (on internal TxCAN) and the
– input clock is enabled
– the registers and pages remain accessible
– enables a hardware loop back, internal TxCAN on internal RxCAN
– provides a recessive level on TXCAN output pin
– does not disable RXCAN input pin
– freezes TEC and REC error counters
In this mode:
In standby mode:
This mode is transparent for the CAN channel:
receiver is disabled
LISTEN
RxCAN
TxCAN
internal
internal
1
0
PD5
PD6
RXCAN
TXCAN
8209D–AVR–11/10
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