ATmega32A Atmel Corporation, ATmega32A Datasheet - Page 119

• 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

17. 8-bit Timer/Counter2 with PWM and Asynchronous Operation
17.1
17.2
8155C–AVR–02/11
Features
Overview
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Timer/Counter2 is a general purpose, single compare unit, 8-bit Timer/Counter module. A simpli-
fied block diagram of the 8-bit Timer/Counter is shown in
of I/O pins, refer to
bits and I/O pins, are shown in bold. The device-specific I/O Register and bit locations are listed
in the
Figure 17-1. 8-bit Timer/Counter Block Diagram
Single Compare unit Counter
Clear Timer on Compare Match (Auto Reload)
Glitch-free, Phase Correct Pulse Width Modulator (PWM)
Frequency Generator
10-bit Clock Prescaler
Overflow and Compare Match Interrupt Sources (TOV2 and OCF2)
Allows clocking from External 32kHz Watch Crystal Independent of the I/O Clock
“Register Description” on page
Status flags
Timer/Counter
TCNTn
OCRn
“Pinout ATmega32A” on page
=
ASSRn
direction
count
clear
BOTTOM
Synchronized Status flags
= 0
132.
Control Logic
=
TCCRn
TOP
asynchronous mode
0xFF
select (ASn)
2. CPU accessible I/O Registers, including I/O
clk
Tn
Synchronization Unit
OCn
(Int.Req.)
Generation
Prescaler
Waveform
Figure
17-1. For the actual placement
ATmega32A
Oscillator
T/C
clk
TOVn
(Int.Req.)
clk
clk
OCn
ASY
I/O
I/O
TOSC1
TOSC2
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