ATMEGA169PA-MNR Atmel, ATMEGA169PA-MNR Datasheet - Page 108
ATMEGA169PA-MNR
Manufacturer Part Number
ATMEGA169PA-MNR
Description
MCU AVR 384KB FLASH 16MHZ 64QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA169PA-MNR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, LCD, 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
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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14.9
14.9.1
8284A–AVR–10/10
Register Description
TCCR0A – Timer/Counter Control Register A
Figure 14-10. Timer/Counter Timing Diagram, Setting of OCF0A, with Prescaler (f
Figure 14-11
Figure 14-11. Timer/Counter Timing Diagram, Clear Timer on Compare Match mode, with Pres-
• Bit 7 – FOC0A: Force Output Compare A
The FOC0A bit is only active when the WGM00 bit specifies a non-PWM mode. However, for
ensuring compatibility with future devices, this bit must be set to zero when TCCR0A is written
when operating in PWM mode. When writing a logical one to the FOC0A bit, an immediate com-
pare match is forced on the Waveform Generation unit. The OC0A output is changed according
to its COM0A1:0 bits setting. Note that the FOC0A bit is implemented as a strobe. Therefore it is
the value present in the COM0A1:0 bits that determines the effect of the forced compare.
A FOC0A strobe will not generate any interrupt, nor will it clear the timer in CTC mode using
OCR0A as TOP.
The FOC0A bit is always read as zero.
Bit
0x24 (0x44)
Read/Write
Initial Value
ATmega169A/169PA/329A/329PA/649A/649P/3290A/3290PA/6490A/6490P
TCNTn
TCNTn
(clk
(clk
OCRnx
OCFnx
(CTC)
OCRnx
OCFnx
clk
clk
clk
clk
I/O
I/O
I/O
I/O
Tn
Tn
/8)
/8)
shows the setting of OCF0A and the clearing of TCNT0 in CTC mode.
caler (f
FOC0A
W
7
0
clk_I/O
WGM00
OCRnx - 1
TOP - 1
R/W
6
0
/8)
COM0A1
R/W
5
0
COM0A0
R/W
OCRnx
TOP
4
0
OCRnx Value
WGM01
TOP
R/W
3
0
CS02
OCRnx + 1
BOTTOM
R/W
2
0
CS01
R/W
1
0
BOTTOM + 1
CS00
OCRnx + 2
R/W
0
0
clk_I/O
/8)
TCCR0A
108
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