ATMEGA162-16AUR Atmel, ATMEGA162-16AUR Datasheet - Page 92
ATMEGA162-16AUR
Manufacturer Part Number
ATMEGA162-16AUR
Description
MCU AVR 16KB FLASH 16MHZ 44TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA162-16AUR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
EBI/EMI, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
35
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
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
For Use With
ATSTK600-TQFP44 - STK600 SOCKET/ADAPTER 44-TQFPATSTK500 - PROGRAMMER AVR STARTER KIT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Data Converters
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Force Output
Compare
Compare Match
Blocking by TCNT0
Write
92
ATmega162/V
Figure 35. Output Compare Unit, Block Diagram
The OCR0 Register is double buffered when using any of the Pulse Width Modulation (PWM)
modes. For the Normal and Clear Timer on Compare (CTC) modes of operation, the double
buffering is disabled. The double buffering synchronizes the update of the OCR0 Compare Reg-
ister to either top or bottom of the counting sequence. The synchronization prevents the
occurrence of odd-length, non-symmetrical PWM pulses, thereby making the output glitch-free.
The OCR0 Register access may seem complex, but this is not case. When the double buffering
is enabled, the CPU has access to the OCR0 Buffer Register, and if double buffering is disabled
the CPU will access the OCR0 directly.
In non-PWM waveform generation modes, the match output of the comparator can be forced by
writing a one to the Force Output Compare (FOC0) bit. Forcing Compare Match will not set the
OCF0 Flag or reload/clear the Timer, but the OC0 pin will be updated as if a real Compare
Match had occurred (the COM01:0 bits settings define whether the OC0 pin is set, cleared or
toggled).
All CPU write operations to the TCNT0 Register will block any Compare Match that occur in the
next timer clock cycle, even when the timer is stopped. This feature allows OCR0 to be initialized
to the same value as TCNT0 without triggering an interrupt when the Timer/Counter clock is
enabled.
bottom
FOCn
top
OCRn
Waveform Generator
WGMn1:0
=
(8-bit Comparator )
DATA BUS
COMn1:0
TCNTn
OCFn (Int.Req.)
OCn
2513K–AVR–07/09
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