RN-171 Roving Networks Inc, RN-171 Datasheet - Page 9

• Manufacturer Part Number: RN-171
• Description: MODULE 802.11B/G 2.4GHZ
• Manufacturer: Roving Networks Inc

Specifications of RN-171

• Frequency: 2.402GHz ~ 2.48GHz
• Data Rate - Maximum: 54Mbps
• Modulation Or Protocol: 802.11 b/g
• Applications: General Purpose
• Power - Output: 12dBm
• Sensitivity: -83dBm
• Voltage - Supply: 3 V ~ 3.7 V
• Current - Receiving: 40mA
• Current - Transmitting: 190mA
• Data Interface: PCB, Surface Mount
• Memory Size: 8Mb Flash, 128kB RAM
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: Module
• Wireless Frequency: 2402 MHz to 2480 MHz
• Interface Type: SPI, UART
• Modulation: DSSS, OFDM
• Security: 128 bit WEP, AES, TKIP
• Operating Voltage: 3.3 V
• Output Power: 12 dBm
• Operating Temperature Range: - 40 C to + 85 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 740-1042

Designs that include the boost regulator will provide good supply to the flash even when the battery voltage drops
close to 1.8V.
If a board containing RN-171 does not include the boost regulator, it SHOULD include a 2.7V undervoltage reset
circuit to prevent the module from accessing flash when supply voltage falls below 2.7V.
All supported flash chips are rated for minimum VDD of 2.7V.
Powering from a 3.3V Regulated Source: Apply 3.3V regulated power to pins 10, 34 and 49. Leave pin 48
(SREG_3V3_CTRL) unconnected. Do not connect pin 48 to ground. leave it as unconnected.
Solder Reflow. Reflow temperature must not exceed 220C.
To reflow solder the RN-171 module onto a PCB Roving recommends a RoHS compliant solder paste equivalent
to the NIHON ALMIT paste or OMNIX OM-310 solder paste from Alpha metals.
NOTE: Use no clean Flux, Do NOT water wash!
Note also, that the temperature profile is based on the IC level and other components level only (without the
shield can). So if we go on module perspective, above 245C profile should be acceptable.
In fact the module temperature profile specifications tells, that you should be able to go beyond 240C (from
220C[60secs] to 250C[10secs]). The module temperature profile diagram is shown below.
www.rovingnetworks.com
809 University Avenue
•
VBATT
Los Gatos, CA 95032
C
in
~ p age 9 ~
48
49
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S REG_3V3_CTRL
V DD_BATT
Tel [phone]
19
RN-­‐ 1 71
V DD
34
V DD_RF
RN-171 Data Sheet
C
Out
• [e-mail]
RN-171-DS v1.0 1/24/2011