SX1212IWLTRT Semtech, SX1212IWLTRT Datasheet - Page 37

• Manufacturer Part Number: SX1212IWLTRT
• Description: IC TXRX 300MHZ-510MHZ 32-TQFN
• Manufacturer: Semtech

Specifications of SX1212IWLTRT

• Frequency: 300MHz ~ 510MHz
• Data Rate - Maximum: 150kbps
• Modulation Or Protocol: FSK, OOK
• Applications: AMR, ISM, Home Automation, Process Control
• Power - Output: 12.5dBm
• Sensitivity: -110dBm
• Voltage - Supply: 2.1 V ~ 3.6 V
• Current - Receiving: 3mA
• Current - Transmitting: 25mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-TQFN
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Modulation Type: FSK/OOK
• Package Type: TQFN EP
• Operating Supply Voltage (min): 2.1V
• Operating Supply Voltage (typ): 2.5/3.3V
• Operating Supply Voltage (max): 3.6V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Supplier Unconfirmed
• Other names: SX1212IWLTR

Note that when reading more than one register successively, it is not compulsory to toggle NSS_CONFIG back
high between two read sequences. The bytes are alternatively considered as address and value.
To write bytes into the FIFO the timing diagram below should be carefully followed by the uC.
Note that it is compulsory to toggle NSS_DATA back high between each byte written.
The byte is pushed into the FIFO on the rising edge of NSS_DATA
Rev 2 – June 18th, 2009
ADVANCED COMMUNICATIONS & SENSING
NSS_CONFIG (In)
SCK (In)
MOSI (In)
MISO (Out)
Write Byte (before/during Tx)
NSS_DATA (In)
SCK (In)
MOSI (In)
MISO (Out)
HZ
HZ
5.2.1.3. SPI Data
start
x
D1(7)
1
x
1
D1(6) D1(5) D1(4)
2
x
rw
2
x
3
x
A(4) A(3) A(2) A(1)
3
x
Figure 29: Write Bytes Sequence (ex: 2 bytes)
1
st
4
x
byte written
Address = A1
4
x
x
Figure 28: Read Register Sequence
D1(3) D1(2) D1(1)
5
x
5
x
6
x
6
x
7
x
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A(0)
7
D1(0)
x
8
x
stop
8
x
HZ
D(7) D(6) D(5) D(4) D(3) D(2) D(1)
x
9
D2(7) D2(6) D2(5)
x
1
10
x
2
x
11
x
3
x
Current value at
address A1
2
12
x
nd
D2(4)
4
x
byte written
13
x
D2(3) D2(2) D2(1)
5
x
14
6
x
x
7
x
15
x
D2(0)
8
x
www.semtech.com
16
D(0)
x
SX1212
x
HZ
HZ