AT32UC3B164 Atmel Corporation, AT32UC3B164 Datasheet - Page 310

• Manufacturer Part Number: AT32UC3B164
• Manufacturer: Atmel Corporation

Specifications of AT32UC3B164

• Flash (kbytes): 64 Kbytes
• Pin Count: 48
• Max. Operating Frequency: 60 MHz
• Cpu: 32-bit AVR
• # Of Touch Channels: 32
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 28
• Ext Interrupts: 28
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 3
• Twi (i2c): 1
• Uart: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 6
• Adc Resolution (bits): 10
• Adc Speed (ksps): 384
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 16
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 3.0-3.6 or (1.65-1.95+3.0-3.6)
• Operating Voltage (vcc): 3.0-3.6 or (1.65-1.95+3.0-3.6)
• Fpu: No
• Mpu / Mmu: Yes / No
• Timers: 10
• Output Compare Channels: 16
• Input Capture Channels: 6
• Pwm Channels: 13
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

Figure 21-16. Manchester Encoded Characters RF Transmission
Figure 21-17. ASK Modulator Output
32059L–AVR32–01/2012
Uptstream Frequency F0
ASK Modulator
unipolar output
default polarity
NRZ stream
Manchester
encoded
Output
data
Downstream
Upstream
Txd
Emitter
Receiver
1
To transmit downstream, encoded data is sent serially to the RF modulator and then through
space to the RF receiver. To receive, another frequency carrier is used and the RF demodulator
does a bit-checking search for valid patterns before it switches to a receiving mode and forwards
data to the decoder. Defining preambles to help distinguish between noise and valid data has to
be done in conjunction with the RF module, and may sometimes be filtered away from the endec
stream. Using the ASK modulation scheme, a one is transmitted as a RF signal at the down-
stream frequency, while a zero is transmitted as no signal. See
modulation scheme uses two different frequencies to transmit data. A one is sent as a signal on
one frequency, and a zero on the other. See
Fdown frequency Carrier
Fup frequency Carrier
0
Figure
0
downstream transmitter
Upstream Receiver
RF filter
control
RF filter
control
Demod
21-18.
VCO
VCO
ASK/FSK
LNA
Mod
PA
ASK/FSK
bi-dir
line
Figure 21-17
Configuration
Manchester
Manchester
1
decoder
encoder
Interface
Serial
Receiver
The FSK
USART
USART
Emitter
310