ATmega32C1 Automotive Atmel Corporation, ATmega32C1 Automotive Datasheet - Page 189

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ATmega32C1 Automotive

Manufacturer Part Number
ATmega32C1 Automotive
Description
Manufacturer
Atmel Corporation

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
16.10.3
7647G–AVR–09/11
CAN General Interrupt Register - CANGIT
• Bit 2 – ENFG: Enable Flag
This flag does not generate an interrupt.
• Bit 1 – BOFF: Bus Off Mode
BOFF gives the information of the state of the CAN channel. Only entering in bus off mode
generates the BOFFIT interrupt.
• Bit 0 – ERRP: Error Passive Mode
ERRP gives the information of the state of the CAN channel. This flag does not generate an
interrupt.
• Bit 7 – CANIT: General Interrupt Flag
This is a read only bit.
• Bit 6 – BOFFIT: Bus Off Interrupt Flag
Writing a logical one resets this interrupt flag. BOFFIT flag is only set when the CAN enters in
bus off mode (coming from error passive mode).
• Bit 5 – OVRTIM: Overrun CAN Timer
Writing a logical one resets this interrupt flag. Entering in CAN timer overrun interrupt handler
also reset this interrupt flag
Initial Value
Read/Write
– 1 - receiver busy: set by hardware as long as a frame is received or monitored.
– 0 - CAN controller disable: because an enable/standby command is not
– 1 - CAN controller enable.
– 0 - no bus off mode.
– 1 - bus off mode.
– 0 - no error passive mode.
– 1 - error passive mode.
Bit
– 0 - no interrupt.
– 1 - CAN interrupt: image of all the CAN controller interrupts except for OVRTIM
– 0 - no interrupt.
– 1 - bus off interrupt when the CAN enters in bus off mode.
– 0 - no interrupt.
– 1 - CAN timer overrun interrupt: set when the CAN timer switches from 0xFFFF to 0.
immediately effective, this status gives the true state of the chosen mode.
interrupt. This bit can be used for polling method.
CANIT
R
7
0
BOFFIT
R/W
6
0
OVRTIM
R/W
5
0
Atmel ATmega16/32/64/M1/C1
BXOK
R/W
4
0
SERG
R/W
3
0
CERG
R/W
2
0
FERG
R/W
1
0
AERG
R/W
0
0
CANGIT
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