ATA8743-PXQW Atmel, ATA8743-PXQW Datasheet - Page 12

• Manufacturer Part Number: ATA8743-PXQW
• Description: MCU W/TRANSMITTER ASK/FSK 24QFN
• Manufacturer: Atmel

Specifications of ATA8743-PXQW

• Frequency: 868MHz ~ 928MHz
• Applications: Home Automation, Remote Sensing, RKE
• Modulation Or Protocol: ASK, FSK
• Data Rate - Maximum: 32 kBit/s
• Power - Output: 3.5dBm ~ 8dBm
• Current - Transmitting: 9.3mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Memory Size: 4kB Flash, 256B EEPROM, 256B SRAM
• Voltage - Supply: 1.8 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 24-VQFN Exposed Pad, 24-HVQFN, 24-SQFN, 24-DHVQFN
• Processor Series: ATA8x
• Core: AVR8
• Data Bus Width: 8 bit
• Program Memory Type: Flash
• Program Memory Size: 4 KB
• Data Ram Size: 256 B
• Interface Type: SPI, USI
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 12
• Number Of Timers: 2
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: ATASTK512-EK1-IND
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Lead Free Status / Rohs Status: Details

8. Application
12
ATA8743
For the supply-voltage blocking capacitor C
are used to match the loop antenna to the power amplifier, where C
C
value and to have the possibility of realizing the Z
Together with the pins of T5750 and the PCB board wires, C
suppresses the 1
best suppression is achieved when C
ANT2.
The loop antenna should not exceed a width of 1.5 mm, otherwise the Q-factor of the loop
antenna is too high.
L
the load resonance frequency of the crystal. Normally, a value of 12 pF results for a 15 pF
load-capacitance crystal.
Figure 8-1.
1
2
(
is 1 pF/NP0; for C
50 nH to 100 nH) can be printed on PCB. C
GND
VS
ESD Protection Circuit
st
harmonic, hence the position of C
2
two capacitors in series should be used to achieve a better tolerance
CLK
1
PA_ENABLE
is placed as close as possible to the pins ANT1 and
3
, a value of 68 nF/X7R is recommended. C
Load,opt
4
should be selected so that the XTO runs on
1
ANT1
ANT2
by using standard valued capacitors.
on the PCB is important. Normally the
1
forms a series resonance loop that
1
XTAL
typically is 3.9 pF/NP0 and
ENABLE
9152B–INDCO–02/10
1
and C
2