ATMEGA128RFA1-ZU Atmel, ATMEGA128RFA1-ZU Datasheet - Page 494

• 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

Table 32-1. Example Bill of Materials (BoM) for
32.2 Extended Feature Set Application Schematic
494
Designator
B1
CB1
CB3
CB2
CB4
CX1, CX2
C1, C2
C4 (optional) RF matching
R1
XTAL
XTAL 32kHz Crystal
ATmega128RFA1
Description
SMD balun
SMD balun / filter
LDO VREG
bypass capacitor
Power supply bypass
capacitor
Crystal load capacitor
RF coupling capacitor
CLKM low-pass
filter resistor
Crystal
The crystal (XTAL), the two load capacitors (CX1, CX2), and the internal circuitry
connected to pins XTAL1 and XTAL2 form the 16MHz crystal oscillator for the 2.4GHz
transceiver. To achieve the best accuracy and stability of the reference frequency, large
parasitic capacitances must be avoided. Crystal lines should be routed as short as
possible and not in proximity of digital I/O signals. This is especially required for the
High Data Rate Modes.
The 32.768 kHz crystal connected to the internal low power (sub 1µA) crystal oscillator
provides a stable time reference for all low power modes including 32 Bit IEEE 802.15.4
Symbol Counter
using the asynchronous timer T/C2
Asynchronous
not exceed 15pF on both pins. The very low supply current of the oscillator requires
careful layout of the PCB and any leakage path must be avoided.
Crosstalk and radiation from switching digital signals to the crystal pins or the RF pins
can degrade the system performance. The programming of minimum drive strength
settings for the digital output signal is recommended (see
Strength Register 0" on page
The ATmega128RFA1 supports additional features like:
• Security Module (AES)
• High Data Rate Mode up to 2MBits/s
• Antenna Diversity using alternate pin function DIG1/2 at Port G and F
• RX/TX Indicator using alternate pin function DIG3/4 at Port G and F
An extended feature set application schematic illustrating the use of the
ATmega128RFA1 Extended Feature Set, is shown in
(100nF minimum)
(100nF minimum)
CX-4025 16 MHz
SX-4025 16 MHz
2.4 GHz
0.47 pF
Value
12 pF
22 pF
680Ω
1 µF
1 µF
"Basic Application Schematic" on page 493
Operation"
("MAC Symbol Counter" on page
Manufacturer
Wuerth
Johanson
Technology
AVX
Murata
AVX
Murata
Epcos
Epcos
AVX
Johnstech
ACAL Taitjen
Siward
on page
174).
309). Total capacitance including CX3, CX4 should
Part Number
748421245
2450FB15L0001
0603YD105KAT2A
GRM188R61C105KA12D
06035A120JA
GRP1886C1H120JA01
B37930
B37920
06035A220JAT2A
XWBBPL-F-1
A207-011
("8-bit Timer/Counter2 with PWM and
133) and real time clock application
Figure 32-2 on page
"DPDS0 – Port Driver
Comment
Filter included
X5R
(0603)
COG
(0603)
C0G
(0402 or 0603)
Designed for f
Rs=100 kOhm
8266A-MCU Wireless-12/09
10%
5%
5%
495.
CLKM
= 1 MHz
16V
50V
50V