ATMEGA165PV-8MU Atmel, ATMEGA165PV-8MU Datasheet - Page 143
![IC AVR MCU 16K 8MHZ 64-QFN](/photos/12/13/121326/313-64-qfn_sml.jpg)
ATMEGA165PV-8MU
Manufacturer Part Number
ATMEGA165PV-8MU
Description
IC AVR MCU 16K 8MHZ 64-QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA165PV-8MU
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
Connectivity
SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
54
Program Memory Size
16KB (8K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K 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
64-MLF®, 64-QFN
Processor Series
ATMEGA16x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
1 KB
Interface Type
SPI, USART, USI
Maximum Clock Frequency
8 MHz
Number Of Programmable I/os
54
Number Of Timers
3
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
Package
64QFN EP
Device Core
AVR
Family Name
ATmega
Maximum Speed
8 MHz
Operating Supply Voltage
2.5|3.3|5 V
For Use With
ATSTK600-TQFP64 - STK600 SOCKET/ADAPTER 64-TQFP770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRISP2 - PROGRAMMER AVR IN SYSTEM
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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16.11 Register Description
16.11.1
8019K–AVR–11/10
TCCR2A – Timer/Counter Control Register A
• Bit 7 – FOC2A: Force Output Compare A
The FOC2A bit is only active when the WGM bits specify a non-PWM mode. However, for ensur-
ing compatibility with future devices, this bit must be set to zero when TCCR2A is written when
operating in PWM mode. When writing a logical one to the FOC2A bit, an immediate compare
match is forced on the Waveform Generation unit. The OC2A output is changed according to its
COM2A[1:0] bits setting. Note that the FOC2A bit is implemented as a strobe. Therefore it is the
value present in the COM2A[1:0] bits that determines the effect of the forced compare.
A FOC2A strobe will not generate any interrupt, nor will it clear the timer in CTC mode using
OCR2A as TOP.
The FOC2A bit is always read as zero.
• Bit 6, 3 – WGM2[1:0]: Waveform Generation Mode
These bits control the counting sequence of the counter, the source for the maximum (TOP)
counter value, and what type of waveform generation to be used. Modes of operation supported
by the Timer/Counter unit are: Normal mode, Clear Timer on Compare match (CTC) mode, and
two types of Pulse Width Modulation (PWM) modes. See
on page
Table 16-2.
Note:
• Bit 5:4 – COM2A[1:0]: Compare Match Output Mode A
These bits control the Output Compare pin (OC2A) behavior. If one or both of the COM2A[1:0]
bits are set, the OC2A output overrides the normal port functionality of the I/O pin it is connected
to. However, note that the Data Direction Register (DDR) bit corresponding to OC2A pin must be
set in order to enable the output driver.
When OC2A is connected to the pin, the function of the COM2A[1:0] bits depends on the
WGM2[1:0] bit setting.
Bit
(0xB0)
Read/Write
Initial Value
Mode
0
1
2
3
1. The CTC2 and PWM2 bit definition names are now obsolete. Use the WGM2[1:0] definitions.
134.
WGM21
(CTC2)
However, the functionality and location of these bits are compatible with previous versions of
the timer.
0
0
1
1
Waveform Generation Mode Bit Description
FOC2A
W
7
0
WGM20
(PWM2)
WGM20
0
1
0
1
R/W
6
0
Timer/Counter Mode of
Operation
Normal
PWM, Phase Correct
CTC
Fast PWM
COM2A1
R/W
5
0
COM2A0
R/W
4
0
WGM21
R/W
3
0
Table 16-2
(1)
TOP
0xFF
0xFF
OCR2A
0xFF
CS22
R/W
2
0
and
Update of
OCR2A at
Immediate
TOP
Immediate
BOTTOM
ATmega165P
CS21
R/W
1
0
“Modes of Operation”
CS20
R/W
0
0
TOV2 Flag
Set on
MAX
BOTTOM
MAX
MAX
TCCR2A
143
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