ATMEGA1284PR212-MU Atmel, ATMEGA1284PR212-MU Datasheet - Page 143
ATMEGA1284PR212-MU
Manufacturer Part Number
ATMEGA1284PR212-MU
Description
BUNDLE ATMEGA1284P/RF212 QFN
Manufacturer
Atmel
Datasheet
1.ATMEGA1284PR231-AU.pdf
(380 pages)
Specifications of ATMEGA1284PR212-MU
Frequency
2.4GHz
Modulation Or Protocol
802.15.4 Zigbee, 6LoWPAN, ISM
Data Interface
PCB, Surface Mount
Memory Size
128kB Flash, 4kB EEPROM, 16kB RAM
Antenna Connector
PCB, Surface Mount
Package / Case
44-QFN, 32-QFN
Processor Series
ATMEGA128x
Core
AVR8
Data Bus Width
8 bit
Program Memory Type
Flash
Program Memory Size
128 KB
Data Ram Size
16 KB
Development Tools By Supplier
ATAVRRZ541, ATAVRRAVEN, ATAVRRZUSBSTICK, ATAVRISP2, ATAVRRZ201
For Use With
ATSTK600 - DEV KIT FOR AVR/AVR32
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Supply
-
Power - Output
-
Operating Temperature
-
Applications
-
Sensitivity
-
Data Rate - Maximum
-
Current - Transmitting
-
Current - Receiving
-
Lead Free Status / Rohs Status
Details
- Current page: 143 of 380
- Download datasheet (7Mb)
15.5.1
15.5.2
8059D–AVR–11/09
Force Output Compare
Compare Match Blocking by TCNT2 Write
according to operating mode set by the WGM22:0 bits and Compare Output mode (COM2x1:0)
bits. The max and bottom signals are used by the Waveform Generator for handling the special
cases of the extreme values in some modes of operation
Figure 14-10 on page 129
Figure 15-3. Output Compare Unit, Block Diagram
The OCR2x 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 OCR2x Compare
Register 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 OCR2x Register access may seem complex, but this is not case. When the double buffering
is enabled, the CPU has access to the OCR2x Buffer Register, and if double buffering is dis-
abled the CPU will access the OCR2x 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 (FOC2x) bit. Forcing compare match will not set the
OCF2x Flag or reload/clear the timer, but the OC2x pin will be updated as if a real compare
match had occurred (the COM2x1:0 bits settings define whether the OC2x pin is set, cleared or
toggled).
All CPU write operations to the TCNT2 Register will block any compare match that occurs in the
next timer clock cycle, even when the timer is stopped. This feature allows OCR2x to be initial-
ized to the same value as TCNT2 without triggering an interrupt when the Timer/Counter clock is
enabled.
bottom
FOCn
top
OCRnx
shows a block diagram of the Output Compare unit.
Waveform Generator
WGMn1:0
=
(8-bit Comparator )
DATA BUS
COMnX1:0
(”Modes of Operation” on page
TCNTn
ATmega1284P
OCFnx (Int.Req.)
OCnx
145).
143
Related parts for ATMEGA1284PR212-MU
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Manufacturer:
Atmel Corporation
Datasheet:
Part Number:
Description:
Development Boards & Kits - AVR MEGA-1284P Xplained Evaluation kit
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU AVR 128K ISP FLASH 44-TQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU AVR 128K ISP FLASH 40-PDIP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU AVR 128KB FLASH 20MHZ 44VQFN
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU AVR 128KB FLASH 20MHZ 44TQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU AVR 128K ISP FLASH 44-QFN
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
Manufacturer:
Atmel Corporation
Datasheet:
Part Number:
Description:
IC MCU AVR 128K FLASH 44QFN
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC MCU AVR 128K FLASH 44TQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC MCU AVR 128K FLASH 40PDIP
Manufacturer:
Atmel
Datasheet: