ATMEGA64A-ANR Atmel, ATMEGA64A-ANR Datasheet - Page 111

• Manufacturer Part Number: ATMEGA64A-ANR
• Description: IC MCU AVR 64K FLASH 64TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA64A-ANR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 64KB (32K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

15. 16-bit Timer/Counter (Timer/Counter1 and Timer/Counter3)
15.1
15.1.1
15.2
8160C–AVR–07/09
Features
Overview
Restrictions in ATmega103 Compatibility Mode
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Note that in ATmega103 compatibility mode, only one 16-bit Timer/Counter is available
(Timer/Counter1). Also note that in ATmega103 compatibility mode, the Timer/Counter1 has two
compare registers (Compare A and Compare B) only.
The 16-bit Timer/Counter unit allows accurate program execution timing (event management),
wave generation, and signal timing measurement. Most register and bit references in this
datasheet are written in general form. A lower case “n” replaces the Timer/Counter number, and
a lower case “x” replaces the Output Compare unit channel. However, when using the register or
bit defines in a program, the precise form must be used (i.e,. TCNT1 for accessing
Timer/Counter1 counter value and so on). The physical I/O Register and bit locations for
ATmega64A are listed in the
A simplified block diagram of the 16-bit Timer/Counter is shown in
I/O Registers, including I/O bits and I/O pins, are shown in bold.
True 16-bit Design (i.e., Allows 16-bit PWM)
Three Independent Output Compare Units
Double Buffered Output Compare Registers
One Input Capture Unit
Input Capture Noise Canceler
Clear Timer on Compare Match (Auto Reload)
Glitch-free, Phase Correct Pulse Width Modulator (PWM)
Variable PWM Period
Frequency Generator
External Event Counter
Ten Independent Interrupt Sources (TOV1, OCF1A, OCF1B, OCF1C, ICF1, TOV3, OCF3A, OCF3B,
OCF3C, and ICF3)
“16-bit Timer/Counter Register Description” on page
Figure
ATmega64A
15-1. CPU accessible
133.
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