ATMEGA128RFA1-ZUR Atmel, ATMEGA128RFA1-ZUR Datasheet - Page 420
ATMEGA128RFA1-ZUR
Manufacturer Part Number
ATMEGA128RFA1-ZUR
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)
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
Company:
Part Number:
ATMEGA128RFA1-ZUR
Manufacturer:
ON
Quantity:
56 000
- Current page: 420 of 555
- Download datasheet (6Mb)
27.6.3 ADC Voltage Reference
27.7 ADC Noise Canceller
420
ATmega128RFA1
Figure 27-10. ADC Timing Diagram, Changing MUXn during a Conversion
The reference voltage for the ADC (V
Single ended channels that exceed V
REFSn bits in the ADMUX register as either AVDD (1.8V), internal 1.5V or 1.6V
reference or an external voltage at the AREF pin.
AVDD is connected to the ADC through a passive switch. The internal 1.5V and 1.6V
references are generated from a bandgap reference (VBG) through an amplifier. In
either case, the external AREF pin is directly connected to the ADC and the reference
voltage can be measured at the AREF pin with a high impedance voltmeter. When
using the internal 1.5V or 1.6V references no external de-coupling capacitor must be
connected to AREF. High capacitive loading will de-stabilize the internal voltage
amplifier. The 1.6V reference voltage is calibrated to an absolute accuracy of 1 LSB
during the manufacturing process.
If the user has a fixed voltage source connected to the AREF pin, the user may not use
the other reference voltage options in the application, as they will be shorted to the
external voltage. An external reference voltage must be supplied with a very low
impedance R
(see
dependent and changes (current steps) in the course of the successive approximation
process. If no external voltage is applied to the AREF pin, the user may switch between
AVDD, 1.5V and 1.6V as reference selection.
Changes of the reference selection bits REFSn will only take effect until the first
conversion start is requested by setting ADSC in ADCSRA. After this the ADC has to be
disabled and enabled again for new reference selections. For internal references a
stable voltage is indicated by the REFOK bit in ADCSRB.
The ADC features a noise canceller that enables conversion during sleep mode to
reduce noise induced from the CPU core and other I/O peripherals. The noise canceller
can be used with ADC Noise Reduction and Idle mode. To make use of this feature, the
following procedure should be used:
1. Make sure that the ADC is enabled and is not busy converting. Single Conversion
2. Enter ADC Noise Reduction mode (or Idle mode). The ADC will start a conversion
A D C C lo ck
M U X 5 :0
M U X 5 :0
A D IF
A D C H
A D C L
mode must be selected and the ADC Conversion Complete interrupt must be
enabled.
once the CPU has been halted.
"ADC Characteristics" on page
in te rn a l
O ld C h a n n e l
AREF,EXT
C o n ve rsio n
1 1 T
C o n ve rsio n
C o m p le te
A D C _ C L K
(see
O ld C h a n n e l
N e w C h a n n e l
"ADC Characteristics" on page
t
C H D L Y
REF
REF
S ig n a n d M S B o f R e su lt
L S B o f R e su lt
509) seen by the external source is code
) indicates the conversion range for the ADC.
A D C S e ttlin g
N e w C h a n n e l
will result 0x3FF. V
t
A S E T
A D C In p u t
C h a n n e l is
ch a n g e d
509). The load current I
REF
N e w C o n ve rsio n
ca n b e sta rte d
fro m h e re
can be selected by the
8266B-MCU Wireless-03/11
L,AREF
Related parts for ATMEGA128RFA1-ZUR
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Microcontroller with 128K bytes In-system programmable flash, 8 MHz, power supply =2.7 - 5.5V
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
IC AVR MCU 128K 16MHZ 5V 64TQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC AVR MCU 128K 16MHZ 5V 64-QFN
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC AVR MCU 128K 16MHZ COM 64-QFN
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC AVR MCU 128K 16MHZ 64-TQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC AVR MCU 128K 16MHZ 64-TQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC AVR MCU 128K 16MHZ IND 64-QFN
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU AVR 128KB FLASH 16MHZ 64TQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU AVR 128KB FLASH 16MHZ 64QFN
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU AVR 128KB FLASH 16MHZ 64TQFP
Manufacturer:
Atmel
Datasheet: