ST Microelectronics SPSGRF User Manual
SPSGRF-868 / 915
SubGiga (868 or 915 MHz) programmable transceiver module
Datasheet
Features
∙Programmable Radio features
-Modulation schemes: 2-FSK, GFSK, MSK, GMSK, OOk, ASK
-Air data rate from 1 to 500 kbps
-On board antenna
∙RF features
-Receiver sensitivity: -118 dBm
-Programmable RF output power
∙Host Interface
-SPI
∙General I/O
-Up to 32 programmable I/O functions on 4 GPIO programmable module pins
∙Two Carrier Frequency versions
-868 MHz tuned antenna (Europe)
-915 MHz tuned antenna (USA)
Preliminary module picture
11.5 mm x 13.5 mm x 2.0 mm
April 2014 rev 0.1
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice. www.st.com
www.st.com
SPSGRF
1 Description
The SPSGRF is an easy to use sub-gigahertz transceiver module, with many programmable features. The module provides a complete RF platform in a tiny form factor.
The SPSGRF enables electronic devices with wireless connectivity, not requiring any RF experience or expertise for integration into the final product. The SPSGRF, being a certified solution, optimizes the time to market of the final applications.
The module is designed for maximum performance in a minimal space including 4 programmable I/O pin and SPI serial interface.
2Applications
∙M2M industrial control
∙Service diagnostic
∙Data acquisition equipment
∙Machine control
∙Sensor monitoring
∙Security system
∙Mobile health
P a g e | 2 |
Rev 1.0 |
SPSGRF
5 Hardware Specifications
General Conditions (VIN= 3.3V and 25°C)
Absolute Maximum Ratings
Rating |
Min |
Typical |
Max |
Unit |
Storage temperature range |
-40 |
- |
+85 |
°C |
Supply voltage, VIN |
-0.3 |
- |
+ 3.9 |
Volts |
I/O pin Voltage |
-0.3 |
- |
+ 3.9 |
Volts |
RF saturation input power |
- |
10 |
- |
dBm |
Recommended Operating Conditions
Rating |
Min |
Typical |
Max |
Unit |
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Operating Temperature Range |
-40 |
- |
85 |
°C |
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Supply Voltage VIN |
1.8 |
3.3 |
3.6 |
Volts |
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Signals & I/O Pin Voltage |
1.8 |
- |
3.6 |
Volts |
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(according Supply Voltage) |
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RF Frequency Bandwidth |
863 |
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870 |
MHz |
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(SPSGRF-868) |
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RF Frequency Bandwidth |
902 |
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928 |
MHz |
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(SPSGRF-915) |
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Power-On reset (POR) module internally generated signal
The power-on-reset circuit generates a reset pulse upon power-up which is used to initialize the entire internal module digital logic. Power-on-reset senses module Vin voltage.
Pin connection diagram
P a g e | 6 |
Rev 1.0 |
SPSGRF
Pin Assignment
|
Name |
|
Type |
Pin # |
|
Description |
ALT Function |
V max. Tolerant |
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Initial State |
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SPI Interface |
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SPI_CLK |
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I |
7 |
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SPI CLOCK (Max. 8 MHz) |
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Vin |
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SPI_MOSI |
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I |
9 |
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SPI MOSI (MASTER out SLAVE in) |
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Vin |
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SPI_MISO |
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O |
8 |
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SPI MISO (MASTER in / SLAVE out) |
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Vin |
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SPI_CS |
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I |
10 |
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SPI “Chip Select” (SPI slave select) |
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Vin |
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Power and Ground |
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Vin |
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5 |
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Vin |
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(1.8V + 3.6V max.) |
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GND |
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6 |
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GND |
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Module SHUTDOWN |
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SDN |
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I |
11 |
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SHUTDOWN input (active high.) |
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(1.8V + Vin max). |
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GPIO – General Purpose Input/Output |
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GPIO [0] |
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I/O |
4 |
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Programmable Input / Output |
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(1.8V + Vin max.). |
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Digital Output. |
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& Analog Temperature output |
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Low Power |
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GPIO [1] |
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I/O |
3 |
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Programmable Input / Output |
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(1.8V + Vin max.). |
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Digital Output. |
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Low Power |
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GPIO [2] |
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I/O |
2 |
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Programmable Input / Output |
|
(1.8V + Vin max.). |
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Digital Output. |
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Low Power |
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GPIO [3] |
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I/O |
1 |
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Programmable Input / Output |
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(1.8V + Vin max.). |
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Digital Output. |
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Low Power |
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Pin1 = GPIO_3 (TBD) |
Pin11 = SDN |
Pin2 = GPIO_2 (TBD) |
Pin10 = SPI_CS |
Pin3 = GPIO_1 (TBD) |
Pin9 = SPI_MOSI |
Pin4 = GPIO_0 (TBD) |
Pin8 = SPI_MISO |
Pin5 = Vin |
Pin7 = SPI_CLK |
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Pin6 = GND |
Rev 1.0 |
P a g e | 7 |
SPSGRF
Module Current Consumption
SPSGRF-868 module
Symbol |
Parameter |
|
Test Conditions |
Typ. |
Unit |
|
|
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Operating mode |
22 |
mA |
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Tx , +11.6 dBm , 2-FSK , 868 MHz |
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Operating mode |
9 |
mA |
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Tx , - 7 dBm , 2-FSK , 868 MHz |
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Idd |
Supply current |
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Operating mode |
10 |
mA |
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Rx , |
8685 MHz |
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Command mode |
0.6 |
mA |
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Shutdown High Level -Vdd |
0.1 |
µA |
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(with other I/O in High impedance) |
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SPSGRF-915 module
Symbol |
Parameter |
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Test Conditions |
Typ. |
Unit |
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Operating mode |
22 |
mA |
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Tx , +11.6 dBm , 2-FSK , 915 MHz |
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Operating mode |
9 |
mA |
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Tx , - 7 dBm , 2-FSK , 915 MHz |
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Idd |
Supply current |
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Operating mode |
10 |
mA |
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Rx , |
915 MHz |
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Command mode |
0.6 |
mA |
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Shutdown High Level -Vdd |
0.1 |
µA |
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(with other I/O in High impedance) |
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Module RF compliance limits
The RF compliance limits are those tested for FCC and CE certification using the dedicated DONGLE (PC92A.V01). These limits are enforced by the DONGLE firmware. Care must be taken with custom application firmware to ensure these limits are not exceeded, voiding the FCC and CE certification.
RF compliance limits table
Modulation |
Standards |
|
Parameter |
Max. |
Unit |
|
FCC Part 15.207 (1) |
|
Data rate |
500 |
kbps |
2-FSK |
FCC Part 15.247 (1) |
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GFSK |
EN 300 220-2 V2.4.1 (2) |
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MSK |
EN 301 489-01 V1.9.2 (2) |
Conducted |
+11.6 |
dBm |
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EN 301 489-03 V1.4.1 |
(2) |
Output power |
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FCC Part 15.207 (1) |
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Data rate |
250 |
kbps |
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FCC Part 15.249 (1) |
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OOK |
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EN 300 220-2 V2.4.1 (2) |
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ASK |
Conducted |
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EN 301 489-01 V1.9.2 |
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(2) |
6 |
dBm |
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Output power |
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EN 301 489-03 V1.4.1 (2) |
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1.FCC standards are only applicable to the SPSGRF-915 module.
2.EN standards are only applicable to the SPSGRF-868 module.
P a g e | 8 |
Rev 1.0 |
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