Si4312
4. Pin Descriptions: Si4312-B10-GM
VDD
1
20
19
18
17
16
RFGND 2
15 BT0
RX_IN 3
RST 4
RATIO 5
GND
PAD
14 BT1
13 DOUT
12 GND
6
7
8
9
10
11 VDD
14
Pin Number(s)
1, 8, 11
2
3
4
5
6
7, 12, GND PAD
9
10
13
14, 15
16, 17
18,19,20
Name
VDD
RFGND
RX_IN
RST
RATIO
315/434
GND
XTL1
XTL2
DOUT
BT[1:0]
TH[1:0]
NC
Description
Supply voltage, may connect to external battery.
RF ground. Connect to ground plane on PCB.
RF receiver input.
Device reset, active low input.
Constant used to determine threshold calculation window, input
pin.
Selectable logic input for 315 or 433.92 MHz operation.
Ground. Connect to ground plane on PCB.
Crystal input.
Crystal input.
Data output.
Bit time selection input pins.
Threshold hold time selection input pins.
No connect. Leave floating.
Rev. 0.5
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