ATA5771 Datasheet, PDF (15/284 Pages) ATMEL Corporation – Microcontroller with UHF ASK/FSK Transmitter

2. Pin Configuration
Figure 2-1. Pinning TSSOP8L
CLK 1
PA_ENABLE 2
ANT2 3
ANT1 4
8 ENABLE
7 GND
6 VS
5 XTAL
Table 2-1. Pin Description
Pin
Symbol
Function
Configuration
VS
Clock output signal for micro con roller
1
CLK
The clock output frequency is set by the
crystal to f_XTAL/4
100Ω
CLK
100Ω
2
PA_ENABLE
Switches on power amplifier, used for
ASK modulation
3
ANT2
Emitter of antenna output stage
4
ANT1
Open collector antenna output
PA_ENABLE ^{50 kΩ}
20 µA
U_REF = 1.1V
ANT1
ANT2
2 T5750
4546E–RKE–02/07