ATMEGA128RFA1-ZUR Atmel, ATMEGA128RFA1-ZUR Datasheet - Page 99

IC AVR MCU 2.4GHZ XCEIVER 64QFN

ATMEGA128RFA1-ZUR

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

Specifications of ATMEGA128RFA1-ZUR

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
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

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATMEGA128RFA1-ZUR
Manufacturer:
ON
Quantity:
56 000
2467V–AVR–02/11
Figure 39. Fast PWM Mode, Timing Diagram
The Timer/Counter overflow flag (
is enabled, the interrupt handler routine can be used for updating the compare value.
In fast PWM mode, the compare unit allows generation of PWM waveforms on the OC0 pin. Set-
ting the COM01:0 bits to 2 will produce a non-inverted PWM and an inverted PWM output can
be generated by setting the COM01:0 to 3 (See
will only be visible on the port pin if the data direction for the port pin is set as output. The PWM
waveform is generated by setting (or clearing) the OC0 Register at the compare match between
OCR0 and TCNT0, and clearing (or setting) the OC0 Register at the timer clock cycle the coun-
ter is cleared (changes from MAX to BOTTOM).
The PWM frequency for the output can be calculated by the following equation:
The N variable represents the prescale factor (1, 8, 32, 64, 128, 256, or 1024).
The extreme values for the OCR0 Register represent special cases when generating a PWM
waveform output in the fast PWM mode. If the OCR0 is set equal to BOTTOM, the output will be
a narrow spike for each MAX+1 timer clock cycle. Setting the OCR0 equal to MAX will result in a
constantly high or low output (depending on the polarity of the output set by the COM01:0 bits.)
A frequency (with 50% duty cycle) waveform output in fast PWM mode can be achieved by set-
ting OC0 to toggle its logical level on each compare match (COM01:0 = 1). The waveform
generated will have a maximum frequency of f
ture is similar to the OC0 toggle in CTC mode, except the double buffer feature of the output
compare unit is enabled in the fast PWM mode.
TCNTn
OCn
OCn
Period
1
2
TOV0
3
f
) is set each time the counter reaches Max If the interrupt
OCnPWM
4
oc0
=
Table 54 on page
= f
----------------- -
N 256
f
clk_I/O
clk_I/O
5
/2 when OCR0 is set to zero. This fea-
6
104). The actual OC0 value
OCRn Interrupt Flag Set
OCRn Update
and
TOVn Interrupt Flag Set
7
ATmega128
(COMn1:0 = 2)
(COMn1:0 = 3)
99

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