ATMEGA3250-16AUR Atmel, ATMEGA3250-16AUR Datasheet - Page 147
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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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Part Number
Manufacturer
Quantity
Price
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17.11.6
17.11.7
2570M–AVR–04/11
TIFR2 – Timer/Counter2 Interrupt Flag Register
GTCCR – General Timer/Counter Control Register
• Bit 1 – OCF2A: Output Compare Flag 2 A
The OCF2A bit is set (one) when a compare match occurs between the Timer/Counter2 and the
data in OCR2A – Output Compare Register2. OCF2A is cleared by hardware when executing
the corresponding interrupt handling vector. Alternatively, OCF2A is cleared by writing a logic
one to the flag. When the I-bit in SREG, OCIE2A (Timer/Counter2 Compare match Interrupt
Enable), and OCF2A are set (one), the Timer/Counter2 Compare match Interrupt is executed.
• Bit 0 – TOV2: Timer/Counter2 Overflow Flag
The TOV2 bit is set (one) when an overflow occurs in Timer/Counter2. TOV2 is cleared by hard-
ware when executing the corresponding interrupt handling vector. Alternatively, TOV2 is cleared
by writing a logic one to the flag. When the SREG I-bit, TOIE2A (Timer/Counter2 Overflow Inter-
rupt Enable), and TOV2 are set (one), the Timer/Counter2 Overflow interrupt is executed. In
PWM mode, this bit is set when Timer/Counter2 changes counting direction at 0x00.
• Bit 1 – PSR2: Prescaler Reset Timer/Counter2
When this bit is one, the Timer/Counter2 prescaler will be reset. This bit is normally cleared
immediately by hardware. If the bit is written when Timer/Counter2 is operating in asynchronous
mode, the bit will remain one until the prescaler has been reset. The bit will not be cleared by
hardware if the TSM bit is set. Refer to the description of the
chronization Mode” on page 101
Bit
0x17 (0x37)
Read/Write
Initial Value
Bit
0x23 (0x43)
Read/Write
Initial Value
TSM
R/W
7
0
R
7
–
0
R
6
–
0
R
6
–
0
R
5
–
0
R
5
–
0
for a description of the Timer/Counter Synchronization mode.
4
–
R
0
R
4
–
0
ATmega325/3250/645/6450
R
3
–
0
R
3
–
0
R
2
–
0
R
2
–
0
“Bit 7 – TSM: Timer/Counter Syn-
OCF2A
R/W
PSR2
1
0
R/W
1
0
TOV2
R/W
PSR10
R/W
0
0
0
0
GTCCR
TIFR2
147
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