Rainbow Electronics U3745BM - Manual (Page 3)

3
U3745BM
4663A–RKE–06/03
Pin Description
Pin Symbol Function
1 NC Not connected
2 ASK ASK high
3 CDEM Lower cut-off frequency data filter
4 AVCC Analog power supply
5 AGND Analog ground
6 DGND Digital ground
7 MIXVCC Power supply mixer
8 LNAGND High-frequency ground LNA and mixer
9 LNA_IN RF input
10 NC Not connected
11 LFVCC Power supply VCO
12 LF Loop filter
13 LFGND Ground VCO
14 XTO Crystal oscillator
15 DVCC Digital power supply
16 MODE Selecting 433.92 MHz/315 MHz. Low: 4.90625 MHz (USA), High: 6.76438 (Europe)
17 POUT Programmable output port
18 TEST Test pin, during operation at GND
19 ENABLE Enables the polling mode. Low: polling mode off (sleep mode). High: polling mode on (active mode)
20 DATA Data output/configuration input