EM357-RTB Ember, EM357-RTB Datasheet - Page 90
EM357-RTB
Manufacturer Part Number
EM357-RTB
Description
IC RF TXRX ZIGBEE 192KB 48QFN
Manufacturer
Ember
Specifications of EM357-RTB
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
Q5059680
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The GPIO pins that can be assigned to these signals are shown in Table 8-5.
8.4.2
Both serial controllers, SC1 and SC2, support SPI slave mode. SPI slave mode is enabled by the following
register settings:
The SPI slave controller receives its clock from an external SPI master device and supports rates up to 5 Mbps.
Direction
GPIO Configuration
SC1 pin
SC2 pin
The serial controller mode register, SCx_MODE, is 2
The SC_SPIMST bit in the SPI configuration register, SCx_SPICFG, is 0
Set Up and Configuration
MOSI
Input
Input
PB2
PA0
Table 8-5. SPI Slave GPIO Usage
Final
8-15
Alternate Output
(push-pull)
Output
MISO
PB1
PA1
SCLK
Input
Input
PB3
PA2
EM351 / EM357
nSSEL
Input
Input
PB4
PA3
120-035X-000G
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