ATMEGA128RFA1-ZU Atmel, ATMEGA128RFA1-ZU Datasheet - Page 307

• Manufacturer Part Number: ATMEGA128RFA1-ZU
• Description: IC AVR MCU 2.4GHZ XCEIVER 64QFN
• Manufacturer: Atmel
• Series: ATMEGAr

Specifications of ATMEGA128RFA1-ZU

• Frequency: 2.4GHz
• Data Rate - Maximum: 2Mbps
• Modulation Or Protocol: 802.15.4 Zigbee
• Applications: General Purpose
• Power - Output: 3.5dBm
• Sensitivity: -100dBm
• Voltage - Supply: 1.8 V ~ 3.6 V
• Current - Receiving: 12.5mA
• Current - Transmitting: 14.5mA
• Data Interface: PCB, Surface Mount
• Memory Size: 128kB Flash, 4kB EEPROM, 16kB RAM
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-VFQFN, Exposed Pad
• Rf Ic Case Style: QFN
• No. Of Pins: 64
• Supply Voltage Range: 1.8V To 3.6V
• Operating Temperature Range: -40°C To +85°C
• Svhc: No SVHC (15-Dec-2010)
• Rohs Compliant: Yes
• Processor Series: ATMEGA128x
• Core: AVR8
• Data Bus Width: 8 bit
• Program Memory Type: Flash
• Program Memory Size: 128 KB
• Data Ram Size: 16 KB
• Interface Type: JTAG
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 38
• Number Of Timers: 6
• Operating Supply Voltage: 1.8 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVR128RFA1-EK1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

20 Output Compare Modulator (OCM1C0A)
20.1 Overview
20.2 Description
8266A-MCU Wireless-12/09
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
Prescaler" on page 304
Operation" on page
Figure 20-1. Output Compare Modulator, Block Diagram
When the modulator is enabled, the two output compare channels are modulated
together as shown in the block diagram
The Output Compare unit 1C and Output Compare unit 2 share the PB7 port pin for
output. The outputs of the Output Compare units (OC1C and OC0A) override the
normal PORTB7 Register when one of them is enabled (i.e., 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 in the following
figure. The schematic includes part of the Timer/Counter units and the port B bit 7
output driver circuit.
Figure 20-2. 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
309.
and
DATABUS
"8-bit Timer/Counter2 with PWM and Asynchronous
OC1C
OC0A
(Figure 20-1
Modulator
0
1
above).
ATmega128RFA1
"Timer/Counter 0, 1, 3, 4, and 5
DDRB7
D
Q
1
0
OC0A / PB7
OC1C /
Pin
Vcc
OC0A/ PB7
OC1C /
Pin
307