ATmega32 Atmel Corporation, ATmega32 Datasheet - Page 107
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ATmega32
Manufacturer Part Number
ATmega32
Description
Manufacturer
Atmel Corporation
Specifications of ATmega32
Flash (kbytes)
32 Kbytes
Pin Count
44
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
32
Ext Interrupts
3
Usb Speed
No
Usb Interface
No
Spi
1
Twi (i2c)
1
Uart
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
3
Output Compare Channels
4
Input Capture Channels
1
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATmega32-16AC
Manufacturer:
COMPAL
Quantity:
500
Part Number:
ATmega32-16AU
Manufacturer:
ATMEL
Quantity:
20 000
Part Number:
ATmega32-16PI
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Part Number:
ATmega32-16PU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
16-bit
Timer/Counter
Register
Description
Timer/Counter1
Control Register A –
TCCR1A
2503Q–AVR–02/11
• Bit 7:6 – COM1A1:0: Compare Output Mode for Compare unit A
• Bit 5:4 – COM1B1:0: Compare Output Mode for Compare unit B
The COM1A1:0 and COM1B1:0 control the Output Compare pins (OC1A and OC1B respec-
tively) behavior. If one or both of the COM1A1:0 bits are written to one, the OC1A output
overrides the normal port functionality of the I/O pin it is connected to. If one or both of the
COM1B1:0 bit are written to one, the OC1B output overrides the normal port functionality of the
I/O pin it is connected to. However, note that the Data Direction Register (DDR) bit correspond-
ing to the OC1A or OC1B pin must be set in order to enable the output driver.
When the OC1A or OC1B is connected to the pin, the function of the COM1x1:0 bits is depen-
dent of the WGM13:0 bits setting.
WGM13:0 bits are set to a normal or a CTC mode (non-PWM).
Table 44. Compare Output Mode, non-PWM
Table 45
mode.
Bit
Read/Write
Initial Value
COM1A1/COM1B1
shows the COM1x1:0 bit functionality when the WGM13:0 bits are set to the fast PWM
0
0
1
1
COM1A1
R/W
7
0
COM1A0
R/W
COM1A0/COM1B0
6
0
COM1B1
R/W
0
1
0
1
5
0
Table 44
COM1B0
R/W
4
0
Description
Normal port operation, OC1A/OC1B
disconnected.
Toggle OC1A/OC1B on compare match
Clear OC1A/OC1B on compare match (Set
output to low level)
Set OC1A/OC1B on compare match (Set
output to high level)
shows the COM1x1:0 bit functionality when the
FOC1A
W
3
0
FOC1B
W
2
0
WGM11
R/W
1
0
ATmega32(L)
WGM10
R/W
0
0
TCCR1A
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