EM357-RTR Ember, EM357-RTR Datasheet - Page 89

• Manufacturer Part Number: EM357-RTR
• Description: IC RF TXRX ZIGBEE 192KB 48QFN
• Manufacturer: Ember

Specifications of EM357-RTR

• Frequency: 2.4GHz
• Data Rate - Maximum: 250kbps
• Modulation Or Protocol: 802.15.4 Zigbee
• Applications: General Purpose
• Power - Output: 5dBm
• Sensitivity: -100dBm
• Voltage - Supply: 2.1 V ~ 3.6 V
• Current - Receiving: 26mA
• Current - Transmitting: 31mA
• Data Interface: PCB, Surface Mount
• Memory Size: 192kB Flash, 12kB RAM
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 636-1011-2

SCx_RATEEXP
SC1_RATEEXP
Serial Clock Exponential Prescaler Register
SC2_RATEEXP
Serial Clock Exponential Prescaler Register
8.4
Bitname
SC_RATEEXP
31
23
15
0
0
0
7
0
SPI - Slave Mode
Both SC1 and SC2 SPI controllers include a SPI slave controller with these features:
8.4.1
The SPI slave controller uses four signals:
30
22
14
6
0
0
0
0
Full duplex operation
Up to 5 Mbps data transfer rate
Programmable clock polarity and clock phase
Selectable data shift direction (either LSB or MSB first)
Slave select input
MOSI (Master Out, Slave In) – inputs serial data from the master
MISO (Master In, Slave Out) – outputs serial data to the master
SCLK (Serial Clock) – clocks data transfers on MOSI and MISO
nSSEL (Slave Select) – enables serial communication with the slave
Bitfield
[3:0]
GPIO Usage
29
21
13
5
0
0
0
0
Access
RW
Description
The exponential component (EXP) of the clock rate in the equation:
rate = 12MHz / ( (LIN + 1) * (2^EXP) )
28
20
12
4
0
0
0
0
Final
8-14
27
19
11
3
0
0
0
26
18
10
0
0
0
2
Address: 0x4000C864 Reset: 0x0
Address: 0x4000C064 Reset: 0x0
SC_RATEEXP
EM351 / EM357
25
17
0
0
9
0
1
120-035X-000G
24
16
0
0
8
0
0