ATmega64 Atmel Corporation, ATmega64 Datasheet - Page 157

no-image

ATmega64

Manufacturer Part Number
ATmega64
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of ATmega64

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
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

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATMEGA64
Manufacturer:
ATMEL
Quantity:
9 500
Part Number:
ATmega64-16AC
Manufacturer:
Atmel
Quantity:
10 000
Part Number:
ATmega64-16AI
Manufacturer:
Atmel
Quantity:
10 000
Part Number:
ATmega64-16AJ
Manufacturer:
Atmel
Quantity:
10 000
Part Number:
ATmega64-16AU
Manufacturer:
ATM
Quantity:
5 400
Part Number:
ATmega64-16AU
Manufacturer:
ATMEL
Quantity:
9 500
Part Number:
ATmega64-16AU
Manufacturer:
Atmel
Quantity:
3 589
Part Number:
ATmega64-16AU
Manufacturer:
Atmel
Quantity:
10 000
Part Number:
ATmega64-16AU
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
Company:
Part Number:
ATmega64-16AU
Quantity:
33
Part Number:
ATmega64-16AUR
Manufacturer:
Atmel
Quantity:
10 000
Part Number:
ATmega64-16MI
Manufacturer:
ATMEL
Quantity:
260
Part Number:
ATmega640-16AU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Part Number:
ATmega640-16AU
Quantity:
80
8-bit
Timer/Counter
Register
Description
TCCR2 –
Timer/Counter Control
Register
2490Q–AVR–06/10
Figure 71. Timer/Counter Timing Diagram, Clear Timer on Compare Match Mode, with Pres-
caler (f
• Bit 7 – FOC2: Force Output Compare
The FOC2 bit is only active when the WGM20 bit specifies a non-PWM mode. However, for
ensuring compatibility with future devices, this bit must be set to zero when TCCR2 is written
when operating in PWM mode. When writing a logical one to the FOC2 bit, an immediate Com-
pare Match is forced on the waveform generation unit. The OC2 output is changed according to
its COM21:0 bits setting. Note that the FOC2 bit is implemented as a strobe. Therefore it is the
value present in the COM21:0 bits that determines the effect of the forced compare.
A FOC2 strobe will not generate any interrupt, nor will it clear the timer in CTC mode using
OCR2 as TOP.
The FOC2 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
two types of Pulse Width Modulation (PWM) modes. See
page
Bit
0x25 (0x45)
Read/Write
Initial Value
TCNTn
(clk
OCRn
151.
(CTC)
OCFn
clk
clk
clk_I/O
I/O
I/O
Tn
/8)
/8)
FOC2
W
7
0
WGM20
R/W
TOP - 1
6
0
COM21
R/W
5
0
COM20
R/W
4
0
TOP
WGM21
R/W
3
0
TOP
CS22
R/W
Table 64
2
0
BOTTOM
CS21
R/W
1
0
and
ATmega64(L)
“Modes of Operation” on
CS20
R/W
0
0
BOTTOM + 1
TCCR2
157

Related parts for ATmega64