ATmega32C1 Automotive Atmel Corporation, ATmega32C1 Automotive Datasheet - Page 174
ATmega32C1 Automotive
Manufacturer Part Number
ATmega32C1 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 ATmega32C1 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
4
Input Capture Channels
1
Pwm Channels
4
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
- Current page: 174 of 367
- Download datasheet (7Mb)
16.2.5.3
16.3
174
CAN Controller
Atmel ATmega16/32/64/M1/C1
Error Signalling
If one or more errors are discovered by at least one node using the above mechanisms, the
current transmission is aborted by sending an "error flag". This prevents other nodes accept-
ing the message and thus ensures the consistency of data throughout the network. After
transmission of an erroneous message that has been aborted, the sender automatically
re-attempts transmission.
The CAN controller implemented into ATmega16/32/64/M1/C1 offers V2.0B Active.
This full-CAN controller provides the whole hardware for convenient acceptance filtering and
message management. For each message to be transmitted or received this module contains
one so called message object in which all information regarding the message (e.g. identifier,
data bytes etc.) are stored.
During the initialization of the peripheral, the application defines which messages are to be
sent and which are to be received. Only if the CAN controller receives a message whose iden-
tifier matches with one of the identifiers of the programmed (receive-) message objects the
message is stored and the application is informed by interrupt. Another advantage is that
incoming remote frames can be answered automatically by the full-CAN controller with the
corresponding data frame. In this way, the CPU load is strongly reduced compared to a
basic-CAN solution.
Using full-CAN controller, high baudrates and high bus loads with many messages can be
handled.
7647G–AVR–09/11
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