ATmega32A Atmel Corporation, ATmega32A Datasheet - Page 134

• Manufacturer Part Number: ATmega32A
• Manufacturer: Atmel Corporation

Specifications of ATmega32A

• 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

8155C–AVR–02/11
Table 17-4
mode.
Table 17-4.
Note:
Table 17-5
rect PWM mode
.
Table 17-5.
Note:
• Bit 2:0 – CS2[2:0]: Clock Select
The three Clock Select bits select the clock source to be used by the Timer/Counter, see
17-6.
Table 17-6.
COM21
CS22
COM21
0
0
1
1
0
0
0
0
1
1
1
1
0
0
1
1
1. A special case occurs when OCR2 equals TOP and COM21 is set. In this case, the compare
1. A special case occurs when OCR2 equals TOP and COM21 is set. In this case, the compare
match is ignored, but the set or clear is done at TOP. See
more details.
match is ignored, but the set or clear is done at TOP. See
127
shows the COM2[1:0] bit functionality when the WGM21:0 bits are set to phase cor-
shows the COM2[1:0] bit functionality when the WGM21:0 bits are set to fast PWM
COM20
Compare Output Mode, Fast PWM Mode
Compare Output Mode, Phase Correct PWM Mode
Clock Select Bit Description
for more details.
CS21
0
1
0
1
0
0
1
1
0
0
1
1
COM20
0
1
0
1
Description
Normal port operation, OC2 disconnected.
Reserved
Clear OC2 on compare match when up-counting. Set OC2 on compare match
when downcounting.
Set OC2 on compare match when up-counting. Clear OC2 on compare match
when downcounting.
CS20
0
1
0
1
0
1
0
1
Description
Normal port operation, OC2 disconnected.
Reserved
Clear OC2 on compare match, set OC2 at BOTTOM,
(non-inverting mode)
Set OC2 on compare match, clear OC2 at BOTTOM,
(inverting mode)
Description
No clock source (Timer/Counter stopped).
clk
clk
clk
clk
clk
clk
clk
T
T
T2S
T2S
T2S
T2S
T2S
2
2
S
S
/256 (From prescaler)
/1024 (From prescaler)
/(No prescaling)
/8 (From prescaler)
/32 (From prescaler)
/64 (From prescaler)
/128 (From prescaler)
(1)
“Phase Correct PWM Mode” on page
“Fast PWM Mode” on page 125
(1)
ATmega32A
Table
134
for