ATMEGA128RFA1-ZU Atmel, ATMEGA128RFA1-ZU Datasheet - Page 233
![IC AVR MCU 2.4GHZ XCEIVER 64QFN](/photos/12/13/121326/313-64-qfn_sml.jpg)
ATMEGA128RFA1-ZU
Manufacturer Part Number
ATMEGA128RFA1-ZU
Description
IC AVR MCU 2.4GHZ XCEIVER 64QFN
Manufacturer
Atmel
Series
ATMEGAr
Datasheets
1.ATMEGA128-16AU.pdf
(385 pages)
2.ATAVR128RFA1-EK1.pdf
(13 pages)
3.ATAVR128RFA1-EK1.pdf
(555 pages)
4.ATMEGA128RFA1-ZU.pdf
(524 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATMEGA128RFA1-ZU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATMEGA128RFA1-ZUR
Manufacturer:
ON
Quantity:
56 000
- ATMEGA128-16AU PDF datasheet
- ATAVR128RFA1-EK1 PDF datasheet #2
- ATAVR128RFA1-EK1 PDF datasheet #3
- ATMEGA128RFA1-ZU PDF datasheet #4
- Current page: 233 of 555
- Download datasheet (6Mb)
17.7 Modes of Operation
17.7.1 Normal Mode
17.7.2 Clear Timer on Compare Match (CTC) Mode
8266B-MCU Wireless-03/11
The mode of operation i.e., the behavior of the Timer/Counter and the Output Compare
pins, is defined by the combination of the Waveform Generation mode (WGM02:0) and
Compare Output mode (COM0x1:0) bits. The Compare Output mode bits do not affect
the counting sequence while the Waveform Generation mode bits do. The COM0x1:0
bits control whether the PWM output generated should be inverted or not (inverted or
non-inverted PWM). For non-PWM modes the COM0x1:0 bits control whether the
output should be set, cleared, or toggled at a Compare Match (see
Unit" on
For detailed timing information see
Table 17-5 shows the function of the WGM2:0 bits of registers TCCR0A and TCCR0B.
These bits control the counting sequence of the counter, the source for maximum
(TOP) counter value, and what type of waveform generation to be used.
Table 17-5. Waveform Generation Mode Bit Description
The simplest mode of operation is the Normal mode (WGM02:0 = 0). In this mode the
counting direction is always up (incrementing) and no counter clear is performed. The
counter simply overruns when it passes its maximum 8-bit value (TOP = 0xFF) and then
restarts from the BOTTOM (0x00). In normal operation the Timer/Counter Overflow
Flag (TOV0) will be set at the same timer clock cycle when the TCNT0 becomes zero.
The TOV0 Flag in this case behaves like a 9
cleared. However, the timer resolution can be increased by software utilizing the timer
overflow interrupt that automatically clears the TOV0 Flag. There are no special cases
to consider in the Normal mode. A new counter value can be written at anytime.
The Output Compare Unit can be used to generate interrupts at some given time. It is
not recommended to use the Output Compare for waveform generation in Normal
mode, since this will occupy too much CPU time.
In Clear Timer on Compare (CTC) mode (WGM02:0 = 2), the OCR0A Register is used
to manipulate the counter resolution. In CTC mode the counter is cleared to zero when
the counter value (TCNT0) matches OCR0A. The OCR0A value defines the TOP value
Notes:
Mode
0
1
2
3
4
5
6
7
page 229).
WGM2
0
0
0
0
1
1
1
1
1. MAX = 0xFF
2. BOTTOM = 0x00
WGM1
0
0
1
1
0
0
1
1
WGM0
0
1
0
1
0
1
0
1
"Timer/Counter Timing Diagrams" on
Timer/Counter
PWM, Phase
PWM, Phase
Operation
Fast PWM
Fast PWM
Reserved
Reserved
Mode of
Correct
Correct
Normal
CTC
th
bit, except that it is only set and not
ATmega128RFA1
OCRA
OCRA
OCRA
0xFF
0xFF
0xFF
TOP
–
–
Update of
Immediate
Immediate
BOTTOM
OCRX at
TOP
TOP
TOP
–
–
"Output Compare
page 237.
TOV Flag
Set on
BOTTOM
BOTTOM
MAX
MAX
MAX
TOP
–
–
(0,0)
233
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