AT90CAN32 Atmel Corporation, AT90CAN32 Datasheet - Page 65
AT90CAN32
Manufacturer Part Number
AT90CAN32
Description
Manufacturer
Atmel Corporation
Specifications of AT90CAN32
Flash (kbytes)
32 Kbytes
Pin Count
64
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
53
Ext Interrupts
8
Usb Speed
No
Usb Interface
No
Spi
1
Twi (i2c)
1
Uart
2
Can
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
No
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
4
Output Compare Channels
8
Input Capture Channels
2
Pwm Channels
7
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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7679H–CAN–08/08
• Bit 0 – IVCE: Interrupt Vector Change Enable
The IVCE bit must be written to logic one to enable change of the IVSEL bit. IVCE is cleared by
hardware four cycles after it is written or when IVSEL is written. Setting the IVCE bit will disable
interrupts, as explained in the IVSEL description above. See Code Example below.
Assembly Code Example
C Code Example
Move_interrupts:
void Move_interrupts(void)
{
/* Get MCUCR*/
/* Enable change of Interrupt Vectors */
/* Move interrupts to Boot Flash section */
}
; Get MCUCR
in
mov
; Enable change of Interrupt Vectors
ori
out
; Move interrupts to Boot Flash section
ori
out
ret
uchar
temp = MCUCR;
MCUCR = temp | (1<<IVCE);
MCUCR = temp | (1<<IVSEL);
r16, MCUCR
r17, r16
r16, (1<<IVCE)
MCUCR, r16
r17, (1<<IVSEL)
MCUCR, r17
temp;
AT90CAN32/64/128
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