EM260-BBRD-128K-USART-R Ember, EM260-BBRD-128K-USART-R Datasheet - Page 38

• Manufacturer Part Number: EM260-BBRD-128K-USART-R
• Description: EM260 BREAKOUT BOARD
• Manufacturer: Ember
• Type: Transceiver, 802.15.4/ZigBeer

Specifications of EM260-BBRD-128K-USART-R

• Frequency: 2.4GHz
• For Use With/related Products: EM260
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 636-1026

8 Typical Application
120-0260-000J
Harmonic
C3
Filter
L2
C1
C2
Balun (BLN1)
R1
Ceramic
Figure 14 illustrates the typical application circuit for the EM260 using the SPI Protocol. This figure does not
contain all decoupling capacitance required by the EM260. The Balun provides the impedance transformation
from the antenna to the EM260 for both TX and RX modes. The harmonic filter provides additional suppression
of the second harmonic, which increases the margin over the FCC limit. The 24MHz crystal with loading
capacitors is required and provides the high frequency source for the EM260. The RC debounce filter (R4 and
C7) is suggested to improve the noise immunity of the nRESET logic (Pin 11).
The SIF (nSIF_LOAD, SIF_MOSI, SIF_MISO, and SIF_CLK), Packet Trace (PTI_EN and PTI_DATA), and SDBG signals
should be brought out test points or, if space permits to a 10-pin, dual row, 0.05-inch pitch header footprint.
With a header populated, a direct connection to the InSight Adapter is possible which enhances the debug
capability of the EM260. For more information, refer to the EM260 Reference Design.
1.8V
R2
L1
1.8V
RF_TX_ALT_P
RF_TX_ALT_N
VDD_PADSA
TX_ACTIVE
VDD_VCO
Figure 14. Typical Application Circuit for SPI Protocol
VDD_RF
VDD_IF
BIAS_R
RF_N
RF_P
C4
R3
10
1
2
3
4
5
6
7
8
9
C6
40 39 38 37 36 35 34 33 32 31
11 12 13 14 15 16 17 18 19 20
X1
GND
41
EM260
C5
U1
Page 38
Route to LED
or leave unconnected
30
29
28
27
26
25
24
23
22
21
(2.1V to 3.6V)
nSIF_LOAD
SIF_MOSI
SIF_MISO
SIF_CLK
nHOST_INT
N.C.
VDD_PADS
PTI_DATA
PTI_EN
nSSEL
VDD_PADS
C7
R4
Programming and
Debug Interface (these
pins should be routed
to test points)
(2.1V to 3.6V)
VDD_PADS
EM260
Serial Interface
(route to Host uP)