ATMEGA1280V-8CUR Atmel, ATMEGA1280V-8CUR Datasheet - Page 172
![MCU AVR 128K FLASH 8MHZ 100CBGA](/photos/6/89/68968/313-100-cbga_sml.jpg)
ATMEGA1280V-8CUR
Manufacturer Part Number
ATMEGA1280V-8CUR
Description
MCU AVR 128K FLASH 8MHZ 100CBGA
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA1280V-8CUR
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
Connectivity
EBI/EMI, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
86
Program Memory Size
128KB (64K x 16)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 16x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-TFBGA
Data Bus Width
8 bit
Data Ram Size
8 KB
Mounting Style
SMD/SMT
For Use With
ATSTK600-TQFP100 - STK600 SOCKET/ADAPTER 100-TQFPATSTK503 - STARTER KIT AVR EXP MODULE 100P
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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18. Output Compare Modulator (OCM1C0A)
18.1
18.2
2549M–AVR–09/10
Overview
Description
The Output Compare Modulator (OCM) allows generation of waveforms modulated with a carrier
frequency. The modulator uses the outputs from the Output Compare Unit C of the 16-bit
Timer/Counter1 and the Output Compare Unit of the 8-bit Timer/Counter0. For more details
about these Timer/Counters see
bit Timer/Counter2 with PWM and Asynchronous Operation” on page
Figure 18-1. Output Compare Modulator, Block Diagram
When the modulator is enabled, the two output compare channels are modulated together as
shown in the block diagram (see
The Output Compare unit 1C and Output Compare unit 2 shares the PB7 port pin for output. The
outputs of the Output Compare units (OC1C and OC0A) overrides the normal PORTB7 Register
when one of them is enabled (that is, when COMnx1:0 is not equal to zero). When both OC1C
and OC0A are enabled at the same time, the modulator is automatically enabled.
The functional equivalent schematic of the modulator is shown on
includes part of the Timer/Counter units and the port B pin 7 output driver circuit.
Figure 18-2. Output Compare Modulator, Schematic
( From Waveform Generator )
( From Waveform Generator )
COMA01
COMA00
COM1C1
COM1C0
Timer/Counter 1
Timer/Counter 0
PORTB7
D
OC1C
D
OC0A
D
Q
Q
Q
ATmega640/1280/1281/2560/2561
“Timer/Counter 0, 1, 3, 4, and 5 Prescaler” on page 169
Figure
DATABUS
18-1).
OC1C
OC0A
Modulator
0
1
DDRB7
D
Figure
Q
1
0
174.
OC0A / PB7
OC1C /
18-2. The schematic
Pin
Vcc
OC0A/ PB7
and
OC1C /
Pin
172
“8-
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