EM250-RCM-R Ember, EM250-RCM-R Datasheet - Page 5
![EM250 RCM BOARD](/photos/14/8/140869/em250-rcm-r_sml.jpg)
EM250-RCM-R
Manufacturer Part Number
EM250-RCM-R
Description
EM250 RCM BOARD
Manufacturer
Ember
Type
Transceiver, 802.15.4/ZigBeer
Datasheet
1.EM250-RCM-R.pdf
(126 pages)
Specifications of EM250-RCM-R
Frequency
2.4GHz
For Use With/related Products
EM250
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
636-1023
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- Download datasheet (3Mb)
Pin #
10
11
12
13
14
15
16
17
18
19
20
21
1
2
3
4
5
6
7
8
9
Signal
VDD_24MHZ
VDD_VCO
RF_P
RF_N
VDD_RF
RF_TX_ALT_P
RF_TX_ALT_N
VDD_IF
BIAS_R
VDD_PADSA
TX_ACTIVE
VDD_PADSA
nRESET
OSC32B
OSC32A
VREG_OUT
VDD_PADS
VDD_CORE
GPIO11
nCTS
MCLK
TMR2IA.1
GPIO12
nRTS
TMR2IB.1
GPIO0
Direction
Power
Power
I/O
I/O
Power
O
O
Power
I
Power
O
Power
I
I/O
I/O
Power
Power
Power
I/O
I
O
I
I/O
O
I
I/O
Description
1.8V high-frequency oscillator supply; should be connected to VREG_OUT
1.8V VCO supply; should be connected to VREG_OUT
Differential (with RF_N) receiver input/transmitter output
Differential (with RF_P) receiver input/transmitter output
1.8V RF supply (LNA and PA); should be connected to VREG_OUT
Differential (with RF_TX_ALT_N) transmitter output (optional)
Differential (with RF_TX_ALT_P) transmitter output (optional)
1.8V IF supply (mixers and filters); should be connected to VREG_OUT
Bias setting resistor
Analog pad supply (1.8V); should be connected to VREG_OUT
Logic-level control for external RX/TX switch
The EM250 baseband controls TX_ACTIVE and drives it high (1.8V) when in TX mode.
(Refer to Table 6 and section 4.2.2.)
Analog pad supply (1.8V); should be connected to VREG_OUT
Active low chip reset (internal pull-up)
32.768kHz crystal oscillator. This pin should be left open when using external clock on
OSC32A or when using the internal RC Oscillator
32.768kHz crystal oscillator or digital clock input. This pin can be left open when using
the internal RC Oscillator.
Regulator output (1.8V)
Pads supply (2.1-3.6V)
1.8V digital core supply; should be connected to VREG_OUT
Digital I/O
Enable GPIO11 with
UART CTS handshake of Serial Controller SC1
Enable SC1-4A with
SPI master clock of Serial Controller SC1
Enable SC1-3M with
SC1_SPICFG[4]
Capture Input A of Timer 2
Enable CAP2-0 with
Digital I/O
Enable GPIO12 with
Enable SC1-4A with
Capture Input B for Timer 2
Enable CAP2-0 with
Digital I/O
Enable GPIO0 with
UART RTS handshake of Serial Controller SC1
Table 1. Pin Descriptions
GPIO_CFG[7:4]
GPIO_CFG[7:4]
GPIO_CFG[7:4]
GPIO_CFG[7:4]
GPIO_CFG[7:4]
GPIO_CFG[7:4]
GPIO_CFG[7:4]
GPIO_CFG[7:4]
Page 5
, select UART with
, select UART with
, select SPI with
SC1_MODE
SC1_MODE
SC1_MODE
, enable master with
EM250
120-0082-000S
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