ATMEGA3250-16AUR Atmel, ATMEGA3250-16AUR Datasheet - Page 130
ATMEGA3250-16AUR
Manufacturer Part Number
ATMEGA3250-16AUR
Description
MCU AVR 32K FLASH 16MHZ 100TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA325-16AUR.pdf
(362 pages)
Specifications of ATMEGA3250-16AUR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
69
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K 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
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17. 8-bit Timer/Counter2 with PWM and Asynchronous Operation
17.1
17.2
2570M–AVR–04/11
Features
Overview
Timer/Counter2 is a general purpose, single compare unit, 8-bit Timer/Counter module. The
main features are:
•
•
•
•
•
•
•
A simplified block diagram of the 8-bit Timer/Counter is shown in
placement of I/O pins, refer to
isters, including I/O 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 OCF2A)
Allows Clocking from External 32kHz Watch Crystal Independent of the I/O Clock
Status flags
Timer/Counter
TCNTn
OCRnx
=
“Register Description” on page
ASSRn
“Pinout ATmega3250/6450” on page
direction
count
clear
BOTTOM
Synchronized Status flags
= 0
Control Logic
=
TCCRnx
TOP
asynchronous mode
0xFF
ATmega325/3250/645/6450
select (ASn)
clk
Tn
Synchronization Unit
OCnx
(Int.Req.)
143.
Generation
Prescaler
Waveform
Figure
2. CPU accessible I/O Reg-
Oscillator
T/C
17-1. For the actual
OCnx
clk
TOVn
(Int.Req.)
clk
clk
ASY
I/O
I/O
TOSC1
TOSC2
130
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