ATMEGA329V-8MUR Atmel, ATMEGA329V-8MUR Datasheet - Page 132
ATMEGA329V-8MUR
Manufacturer Part Number
ATMEGA329V-8MUR
Description
MCU AVR 32K FLASH 8MHZ 64QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA329-16AU.pdf
(392 pages)
Specifications of ATMEGA329V-8MUR
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
Connectivity
SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, LCD, POR, PWM, WDT
Number Of I /o
54
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)
1.8 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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16.11 Register Description
16.11.1
132
ATmega329/3290/649/6490
TCCR1A – Timer/Counter1 Control Register A
Figure 16-13. Timer/Counter Timing Diagram, with Prescaler (f
• Bit 7:6 – COM1A1:0: Compare Output Mode for Unit A
• Bit 5:4 – COM1B1:0: Compare Output Mode for Unit B
The COM1A1:0 and COM1B1:0 control the Output Compare pins (OC1A and OC1B respec-
tively) behavior. If one or both of the COM1A1:0 bits are written to one, the OC1A output
overrides the normal port functionality of the I/O pin it is connected to. If one or both of the
COM1B1:0 bit are written to one, the OC1B output overrides the normal port functionality of the
I/O pin it is connected to. However, note that the Data Direction Register (DDR) bit correspond-
ing to the OC1A or OC1B pin must be set in order to enable the output driver.
When the OC1A or OC1B is connected to the pin, the function of the COM1x1:0 bits is depen-
dent of the WGM13:0 bits setting.
WGM13:0 bits are set to a Normal or a CTC mode (non-PWM).
Table 16-2.
Bit
(0x80)
Read/Write
Initial Value
COM1A1/COM1B1
and ICF n
(PC and PFC PWM)
TOVn
(CTC and FPWM)
(Update at TOP)
0
0
1
1
TCNTn
TCNTn
OCRnx
(clk
as TOP)
clk
clk
COM1A1
I/O
(FPWM)
I/O
Tn
/8)
R/W
(if used
Compare Output Mode, non-PWM
7
0
COM1A0
COM1A0/COM1B0
R/W
6
0
TOP - 1
TOP - 1
0
1
0
1
COM1B1
R/W
Old OCRnx Value
5
0
Table 16-2
COM1B0
R/W
4
0
Description
Normal port operation, OC1A/OC1B
disconnected.
Toggle OC1A/OC1B on Compare Match.
Clear OC1A/OC1B on Compare Match (Set
output to low level).
Set OC1A/OC1B on Compare Match (Set output
to high level).
shows the COM1x1:0 bit functionality when the
TOP
TOP
R
3
–
0
R
2
–
0
BOTTOM
TOP - 1
clk_I/O
WGM11
R/W
1
0
New OCRnx Value
/8)
WGM10
R/W
0
0
BOTTOM + 1
TOP - 2
TCCR1A
2552K–AVR–04/11
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