EM351-MOD-LR-RF-TG Ember, EM351-MOD-LR-RF-TG Datasheet - Page 100
![MODULE EM351 PA/LNA W/RF CONN](/photos/14/20/142082/em351-mod-lr-rf-tg_sml.jpg)
EM351-MOD-LR-RF-TG
Manufacturer Part Number
EM351-MOD-LR-RF-TG
Description
MODULE EM351 PA/LNA W/RF CONN
Manufacturer
Ember
Specifications of EM351-MOD-LR-RF-TG
Frequency
2.4GHz
Data Rate - Maximum
250kbps
Modulation Or Protocol
802.15.4 Zigbee
Voltage - Supply
2.1 V ~ 3.6 V
Current - Receiving
26mA
Current - Transmitting
31mA
Data Interface
PCB, Surface Mount
Memory Size
128kB Flash, 12kB RAM
Antenna Connector
*
Operating Temperature
-40°C ~ 85°C
Package / Case
Module
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Applications
-
Sensitivity
-
Other names
636-1017
- Current page: 100 of 245
- Download datasheet (12Mb)
The GPIO pins assigned to these signals are shown in Table 8-10.
1
8.6.2
The UART baud rate clock is produced by a programmable baud generator starting from the 24 Hz clock:
The integer portion of the divisor, N, is written to the SC1_UARTPER register and the fractional part, F, to the
SC1_UARTFRAC register. Table 8-11 shows the values used to generate some common baud rates and their
associated clock frequency error. The UART requires an internal clock that is at least eight times the baud
rate clock, so the minimum allowable setting for SC1_UARTPER is 8.
The UART can miss bytes when the inter-byte gap is long or there is a baud rate mismatch between receiver
and transmitter. The UART may detect a parity and/or framing error on the corrupted byte, but there will not
necessarily be any error detected.
Direction
GPIO Configuration
SC1 pin
only used if RTS/CTS hardware flow control is enabled.
Baud Rate
(bits/sec)
Set Up and Configuration
115200
230400
460800
921600
19200
38400
57600
2400
4800
9600
300
Table 8-11. UART Baud Rate Divisors for Common Baud Rates
Output (push-pull)
baud
Alternate
Output
TXD
SC1_UARTPER
PB1
=
24
2
N
40000
5000
2500
1250
Table 8-10. UART GPIO Usage
MHz
625
312
208
104
52
26
13
+
Final
8-25
F
RXD
Input
Input
PB2
SC1_UARTFRAC
0
0
0
0
0
1
1
0
0
0
0
nCTS
Input
Input
PB3
EM351 / EM357
1
Baud Rate Error (%)
Output (push-pull)
+ 0.16
+ 0.16
+ 0.16
+ 0.16
- 0.08
Alternate
120-035X-000G
0
0
0
0
0
0
nRTS
Output
PB4
1
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