ATMEGA165P-16ANR Atmel, ATMEGA165P-16ANR Datasheet - Page 119
![IC MCU AVR 16K 16MHZ 64TQFP](/photos/12/13/121332/313-64-tqfp_sml.jpg)
ATMEGA165P-16ANR
Manufacturer Part Number
ATMEGA165P-16ANR
Description
IC MCU AVR 16K 16MHZ 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA165P-16ANR
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
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)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Manufacturer
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14.11 Register Description
14.11.1
8019K–AVR–11/10
TCCR1A – Timer/Counter1 Control Register A
• Bit 7:6 – COM1A[1:0]: Compare Output Mode for Unit A
• Bit 5:4 – COM1B[1:0]: Compare Output Mode for Unit B
The COM1A[1:0] and COM1B[1:0] control the Output Compare pins (OC1A and OC1B respec-
tively) behavior. If one or both of the COM1A[1:0] 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
COM1B[1:0] 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 COM1x[1:0] bits is depen-
dent of the WGM1[3:0] bits setting.
WGM1[3:0] bits are set to a Normal or a CTC mode (non-PWM).
Table 14-1.
Table 14-2
PWM mode.
Table 14-2.
Note:
Bit
(0x80)
Read/Write
Initial Value
COM1A1/COM1B1
COM1A1/COM1B1
1. A special case occurs when OCR1A/OCR1B equals TOP and COM1A1/COM1B1 is set. In
0
0
1
1
0
0
1
1
this case the compare match is ignored, but the set or clear is done at BOTTOM
PWM Mode” on page 111.
shows the COM1x1:0 bit functionality when the WGM1[3:0] bits are set to the fast
COM1A1
Compare Output Mode, non-PWM
Compare Output Mode, Fast PWM
R/W
7
0
COM1A0
COM1A0/COM1B0
COM1A0/COM1B0
R/W
6
0
0
1
0
1
0
1
0
1
COM1B1
R/W
Table 14-1
for more details.
5
0
COM1B0
R/W
4
0
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).
Normal port operation, OC1A/OC1B disconnected.
WGM1[3:0] = 14 or 15: Toggle OC1A on Compare
Match, OC1B disconnected (normal port operation).
For all other WGM1 settings, normal port operation,
OC1A/OC1B disconnected.
Clear OC1A/OC1B on Compare Match, set
OC1A/OC1B at BOTTOM (non-inverting mode)
Set OC1A/OC1B on Compare Match, clear
OC1A/OC1B at BOTTOM (non-inverting mode)
Description
Description
shows the COM1x[1:0] bit functionality when the
(1)
R
3
–
0
R
2
–
0
WGM11
ATmega165P
R/W
1
0
WGM10
R/W
0
0
See “Fast
TCCR1A
119
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