AT90CAN64 Atmel Corporation, AT90CAN64 Datasheet - Page 155

• Manufacturer Part Number: AT90CAN64
• Manufacturer: Atmel Corporation

Specifications of AT90CAN64

• Flash (kbytes): 64 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): 4
• Eeprom (bytes): 2048
• 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

14.8
7679H–CAN–08/08
Timer/Counter Timing Diagrams
The following figures show the Timer/Counter in synchronous mode, and the timer clock (clk
is therefore shown as a clock enable signal. In asynchronous mode, clk
the Timer/Counter Oscillator clock. The figures include information on when interrupt flags are
set.
count sequence close to the MAX value in all modes other than phase correct PWM mode.
Figure 14-9. Timer/Counter Timing Diagram, no Prescaling
Figure 14-10
Figure 14-10. Timer/Counter Timing Diagram, with Prescaler (f
Figure 14-11
• The timer starts counting from a value higher than the one in OCR2A, and for that reason
match. To ensure symmetry around BOTTOM the OCn value at MAX must correspond to the
result of an up-counting Compare Match.
misses the Compare Match and hence the OCn change that would have happened on the
way up.
Figure 14-9
TCNTn
TCNTn
(clk
(clk
TOVn
TOVn
clk
clk
clk
clk
I/O
I/O
I/O
I/O
Tn
Tn
/1)
/8)
shows the same timing data, but with the prescaler enabled.
shows the setting of OCF2A in all modes except CTC mode.
contains timing data for basic Timer/Counter operation. The figure shows the
MAX - 1
MAX - 1
MAX
MAX
AT90CAN32/64/128
clk_I/O
BOTTOM
BOTTOM
/8)
I/O
should be replaced by
BOTTOM + 1
BOTTOM + 1
155
T2
)