ATMEGA128RFA1-ZU Atmel, ATMEGA128RFA1-ZU Datasheet - Page 493

• 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

32 Application Circuits
32.1 Basic Application Schematic
8266A-MCU Wireless-12/09
A basic application schematic of the ATmega128RFA1 with a single-ended RF
connector is shown in
transformed to the 100Ω differential RF port impedance using Balun B1. The capacitors
C1 and C2 provide AC coupling of the RF input to the RF port, capacitor C4 improves
matching.
Figure 32-1. Basic Application schematic
The power supply bypass capacitors (CB2, CB4) are connected to the external analog
supply pin (EVDD, pin 59) and external digital supply pin (DEVDD, pin 23). Pins 34, 44
and 54 supply the digital port pins.
Capacitors CB1 and CB3 are bypass capacitors for the integrated analog and digital
voltage regulators to ensure stable operation and to improve noise immunity.
Capacitors should be placed as close as possible to the pins and should have a low-
resistance and low-inductance connection to ground to achieve the best performance.
RF
C4
B1
C1
C2
CX3
10
11
12
13
14
15
16
1
2
3
4
5
6
8
9
7
32kHz
XTAL
PF7
AVSS
RFP
RFN
AVSS
TST
RSTN
RSTON
PG0
Figure 32-1
64
17 18 19 20 21 22 23 24
63
CR1
CX4
62
V
DD
61
CB1
CB2
60
below. The 50Ω single-ended RF input is
(Table 32-1 on page
CB3
ATmega128RFA1
59
CX1
58
CB4
57
ATmega128RFA1
XTAL
56
25 26 27 28 29 30 31 32
55
V
DD
54
CX2
53
494)
52
51
50
DEVDD
DEVDD
DVSS
DVSS
49
PE0
PB7
PB0
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
CLKI
493