AT90CAN32-16AUR Atmel, AT90CAN32-16AUR Datasheet - Page 157

• Manufacturer Part Number: AT90CAN32-16AUR
• Description: MCU AVR 32K FLASH 16MHZ 64-TQFP
• Manufacturer: Atmel
• Series: AVR® 90CANr

Specifications of AT90CAN32-16AUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: CAN, EBI/EMI, I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP, 64-VQFP
• Data Bus Width: 8 bit
• Mounting Style: SMD/SMT
• For Use With: ATSTK600 - DEV KIT FOR AVR/AVR32ATDVK90CAN1 - KIT DEV FOR AT90CAN128 MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

14.9
14.9.1
7679H–CAN–08/08
8-bit Timer/Counter Register Description
Timer/Counter2 Control Register A– TCCR2A
Figure 14-12
Figure 14-12. Timer/Counter Timing Diagram, Clear Timer on Compare Match mode, with Pres-
• Bit 7 – FOC2A: Force Output Compare A
The FOC2A bit is only active when the WGM bits specify a non-PWM mode. However, for ensur-
ing compatibility with future devices, this bit must be set to zero when TCCR2A is written when
operating in PWM mode. When writing a logical one to the FOC2A bit, an immediate compare
match is forced on the Waveform Generation unit. The OC2A output is changed according to its
COM2A1:0 bits setting. Note that the FOC2A bit is implemented as a strobe. Therefore it is the
value present in the COM2A1:0 bits that determines the effect of the forced compare.
A FOC2A strobe will not generate any interrupt, nor will it clear the timer in CTC mode using
OCR2A as TOP.
The FOC2A bit is always read as zero.
• Bit 6, 3 – WGM21:0: Waveform Generation Mode
These bits control the counting sequence of the counter, the source for the maximum (TOP)
counter value, and what type of waveform generation to be used. Modes of operation supported
by the Timer/Counter unit are: Normal mode, Clear Timer on Compare match (CTC) mode, and
Bit
Read/Write
Initial Value
TCNTn
(clk
OCRnx
(CTC)
OCFnx
clk
clk
I/O
I/O
Tn
/8)
shows the setting of OCF2A and the clearing of TCNT2 in CTC mode.
FOC2A
caler (f
W
7
0
clk_I/O
WGM20
R/W
6
0
/8)
TOP - 1
COM2A1
R/W
5
0
COM2A0
R/W
4
0
WGM21
TOP
R/W
3
0
TOP
CS22
R/W
2
0
AT90CAN32/64/128
CS21
R/W
BOTTOM
1
0
CS20
R/W
0
0
TCCR2A
BOTTOM + 1
157