ST SPSGRF User manual

This is information on a product in full production.
October 2017 DocID027664 Rev 6 1/24
SPSGRF
Sub-GHz (868 or 915 MHz) low power programmable RF
transceiver modules
Datasheet -production data
Features
Programmable radio features
– Based on Sub-1GHz SPIRIT1 transceiver
and integrated Balun (BALF-SPI-01D3)
– Modulation schemes: 2-FSK, GFSK, MSK,
GMSK, OOk, ASK
– Air data rate from 1 to 500 kbps
– On-board antenna
– Operating temperature range from -40 °C
to 85 °C
RF features
– Receiver sensitivity: -118 dBm
– Programmable RF output power up to
+11.6 dBm
Host interface
– SPI
General I/O
– Up to 32 programmable I/O functions on 4
GPIO programmable module pins
Two typical carrier frequency versions:
– SPSGRF-868 with 868 MHz tuned antenna
– SPSGRF-915 with 915 MHz tuned antenna
Certification:
– CE (SPSGRF-868)
– FCC (SPSGRF-915)
– IC (SPSGRF-915)
Applications
AMR (automatic meter reading)
Home and building automation
WSN (wireless sensor network)
Industrial monitoring and control
Wireless fire and security alarm systems
Point-to-point wireless link
Description
The SPSGRF-868 and SPSGRF-915 are easy-to-
use, low power sub-GHz modules based on the
SPIRIT1 RF transceiver, operating respectively in
the 868 MHz SRD and 915 MHz ISM bands.
The modules provide a complete RF platform in a
tiny form factor.
The SPSGRF series enables wireless
connectivity in electronic devices, requiring no RF
experience or expertise for integration into the
final product. As an FCC, IC, and CE certified
solution, the SPSGRF series optimizes the time-
to-market of end applications. The SPSGRF-915
is an FCC certified module (FCC ID:
S9NSPSGRF) and IC certified (IC 8976C-
SPSGRF), while the SPSGRF-868 is certified CE.
The modules are designed for maximum
performance in minimal space and include 4
programmable I/O pins and SPI serial interfaces.
www.st.com

Contents SPSGRF
2/24 DocID027664 Rev 6
Contents
1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 SPSGRF module functional behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Hardware specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.2 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.3 Module current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.4 Module RF compliance limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.5 SPSGRF module RF typical performance . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.6 Pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4 Mechanical dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5 Hardware design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.1 Reflow soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6 Regulatory compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.1 FCC certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.1.1 Labeling instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.1.2 Product manual instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.2 IC certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.2.1 Labeling instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.2.2 Product manual instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.3 CE certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7 Module traceability and marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
8 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
9 ECOPACK® . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

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SPSGRF Block diagram
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1 Block diagram
Figure 1. SPSGRF block diagram

SPSGRF module functional behavior SPSGRF
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2 SPSGRF module functional behavior
The SPIRIT1 device in the SPSGRF module is equipped with a built-in main controller which
controls the switching between the two main operating modes: transmit (TX) and receive
(RX).
In shutdown condition, the SPSGRF module can be switched on/off with the external SDN
pin; all other functions/registers/commands are available through the SPI interface and
GPIOs. No internal supply is generated (in order to minimize battery leakage), and therefore
all stored data and configurations are lost.
The GPIO and SPI ports of the module during shutdown are in HiZ. From the SHUTDOWN
state, the SPSGRF module can be switched on from the SDN pin and goes into a READY
state, which is the default, where the reference signal from XO is available.
From the READY state, the SPSGRF module can be moved to a LOCK state to generate
the high precision LO signal and/or TX or RX modes. Switching from RX to TX and vice-
versa can occur only by passing through the LOCK state. This operation is normally
managed by radio control with a single user command (TX or RX).
At the end of the events above, the SPSGRF module can return to its default state (READY)
and can then be put into a sleep condition (SLEEP state), characterized by very low power
consumption.
If no timeout is required, the SPSGRF module can be moved from READY to STANDBY
state, which has the lowest possible current consumption while retaining FIFO, status and
configuration registers. To manage the transitions towards and between these operating
modes, the controller works as a state machine, the state switching of which is driven by SPI
commands.
Figure 2. Module functional state transitions diagram

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SPSGRF Hardware specifications
24
3 Hardware specifications
3.1 Absolute maximum ratings
General conditions (VIN= 3.3 V and 25 °C)
3.2 Recommended operating conditions
3.3 Module current consumption
Table 1. Absolute maximum ratings
Rating Min. Typ. Max. Unit
Storage temperature range -40 +85 °C
Supply voltage, VIN -0.3 3.9 V
I/O pin voltage -0.3 3.9 V
RF saturation input power +10 dBm
Table 2. Recommended operating conditions
Rating Min. Typ. Max. Unit
Operating temperature range -40 +85 °C
Supply voltage, VIN 1.8 3.3 3.6 V
Signals & I/O pin voltage (according
supply voltage) 1.8 3.6 V
RF frequency bandwidth
(SPSGRF-868) 863 870 MHz
RF frequency bandwidth
(SPSGRF-915) 902 928 MHz
Table 3. SPSGRF-868 module
Symbol Parameter Test conditions Typ. Unit
IDD Supply current
Operating mode
Tx, +11.6 dBm, 2-FSK, 868 MHz 22 mA
Operating mode
Tx, - 7 dBm, 2-FSK, 868 MHz 9mA
Operating mode Rx, 868MHz 10 mA
Command mode 0.6 mA
Shutdown high level -VDD
(with other I/O in High impedance) 0.1 μA

Hardware specifications SPSGRF
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3.4 Module RF compliance limits
The RF compliance limits are those tested for FCC, IC 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, IC and CE certification.
Table 4. SPSGRF-915 module
Symbol Parameter Test conditions Typ. Unit
IDD Supply current
Operating mode
Tx, +11.6 dBm, 2-FSK, 915 MHz 22 mA
Operating mode
Tx, - 7 dBm, 2-FSK, 915 MHz 9mA
Operating mode Rx, 915 MHz 10 mA
Command mode 0.6 mA
Shutdown high level -VDD
(with other I/O in high impedance) 0.1 μA
Table 5. RF compliance limits table
Modulation Standards Parameter Max. Unit
2-FSK
GFSK
MSK
FCC Part 15.207 (1)
FCC Part 15.247 (1)
IC RSS-210
EN 300 220-2 V2.4.1 (2)
EN 301 489-01 V1.9.2 (2)
EN 301 489-03 V1.4.1 (2)
1. FCC and IC standards are applicable only to the SPSGRF-915 module.
2. EN standards are applicable only to the SPSGRF-868 module.
Data rate 500 kbps
Output power +11.6 dBm
OOK
ASK
FCC Part 15.207 (1)
FCC Part 15.247 (1)
IC RSS-210
EN 300 220-2 V2.4.1 (2)
EN 301 489-01 V1.9.2 (2)
EN 301 489-03 V1.4.1 (2)
Data rate 250 kbps
Output power +6 dBm

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SPSGRF Hardware specifications
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3.5 SPSGRF module RF typical performance
The RF performance of the SPSGRF-868 and SPSGRF-915 modules are dependent on
many factors, related to the customer hardware application board where the module is
connected and also to the customer application firmware. In order to provide some basic
information to the customer integrating the module, it may be useful to provide the RF
measurements taken in an anechoic chamber using a dongle containing a connected
SPSGRF-868 or SPSGRF-915 module.
Table 6. SPSGRF-868 or 915 modules radiated typical performance
Symbol Parameter Test conditions Typ. Unit
Tx RF
power RF radiated power
Operating mode
Tx, +11.6 dBm, 2-FSK, 868,0-868,6 MHz +5.3 dBm
Operating mode
Tx, +11.6 dBm, 2-FSK, 902-928 MHz +2.2 dBm

Hardware specifications SPSGRF
8/24 DocID027664 Rev 6
Table 7. SPSGRF-868 or 915 module conducted typical performance before the RF
antenna circuits (positive RF power signal values measured)
Parameter Test conditions(1) Conducted
programmable value
Measured
conducted
value Typ.
Unit
Tx RF
conducted
power
(before the
antenna
circuits)
Tx, +11.6 dBm, 2-FSK, 868 MHz
Tx, +11.6 dBm, 2-FSK, 915 MHz +11.6 +11.2 dBm
Tx, +11 dBm, 2-FSK, 868 MHz
Tx, +11 dBm, 2-FSK, 915 MHz +11.0 +10.8 dBm
Tx, +10 dBm, 2-FSK, 868 MHz
Tx, +10 dBm, 2-FSK, 915 MHz +10.0 +9.7 dBm
Tx, +9 dBm, 2-FSK, 868 MHz
Tx, +9 dBm, 2-FSK, 915 MHz +9.0 +8.5 dBm
Tx, +8 dBm, 2-FSK, 868 MHz
Tx, +8 dBm, 2-FSK, 915 MHz +8.0 +7.6 dBm
Tx, +7 dBm, 2-FSK, 868 MHz
Tx, +7 dBm, 2-FSK, 915 MHz +7.0 +7.2 dBm
Tx, +6 dBm, 2-FSK, 868 MHz
Tx, +6 dBm, 2-FSK, 915 MHz +6.0 +6.2 dBm
Tx, +5 dBm, 2-FSK, 868 MHz
Tx, +5 dBm, 2-FSK, 915 MHz +5.0 +5.4 dBm
Tx, +4 dBm, 2-FSK, 868 MHz
Tx, +4 dBm, 2-FSK, 915 MHz +4.0 +4.0 dBm
Tx, +3 dBm, 2-FSK, 868 MHz
Tx, +3 dBm, 2-FSK, 915 MHz +3.0 +3.1 dBm
Tx, +2 dBm, 2-FSK, 868 MHz
Tx, +2 dBm, 2-FSK, 915 MHz +2.0 +2.1 dBm
Tx, +1 dBm, 2-FSK, 868 MHz
Tx, +1 dBm, 2-FSK, 915 MHz +1.0 +1.2 dBm
Tx, +0 dBm, 2-FSK, 868 MHz
Tx, +0 dBm, 2-FSK, 915 MHz +0.0 +0.6 dBm
1. Operating mode

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SPSGRF Hardware specifications
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Table 8. SPSGRF-868 or 915 module conducted typical performance before the RF
antenna circuits (negative RF power signal values measured)
Parameter Test conditions(1) Conducted
programmable value
Measured
conducted
value Typ.
Unit
Tx RF
conducted
power
(before the
antennas
circuits)
Tx, -1 dBm, 2-FSK, 868 MHz
Tx, -1 dBm, 2-FSK, 915 MHz -1.0 -1.1 dBm
Tx, -2 dBm, 2-FSK, 868 MHz
Tx, -2 dBm, 2-FSK, 915 MHz -2.0 -2.3 dBm
Tx, -3 dBm, 2-FSK, 868 MHz
Tx, -3 dBm, 2-FSK, 915 MHz -3.0 -3.4 dBm
Tx, -4 dBm, 2-FSK, 868 MHz
Tx, -4 dBm, 2-FSK, 915 MHz -4.0 -4.9 dBm
Tx, -5 dBm, 2-FSK, 868 MHz
Tx, -5 dBm, 2-FSK, 915 MHz -5.0 -5.8 dBm
Tx, -6 dBm, 2-FSK, 868 MHz
Tx, -6 dBm, 2-FSK, 915 MHz -6.0 -6.9 dBm
Tx, -7 dBm, 2-FSK, 868 MHz
Tx, -7 dBm, 2-FSK, 915 MHz -7.0 -6.5 dBm
Tx, -8 dBm, 2-FSK, 868 MHz
Tx, -8 dBm, 2-FSK, 915 MHz -8.0 -7.3 dBm
Tx, -9 dBm, 2-FSK, 868 MHz
Tx, -9 dBm, 2-FSK, 915 MHz -9.0 -8.2 dBm
Tx, -10 dBm, 2-FSK, 868 MHz
Tx, -10 dBm, 2-FSK, 915 MHz -10.0 -9.7 dBm
Tx, -15 dBm, 2-FSK, 868 MHz
Tx, -15 dBm, 2-FSK, 915 MHz -15.0 -14.6 dBm
Tx, -20 dBm, 2-FSK, 868 MHz
Tx, -20 dBm, 2-FSK, 915 MHz -20.0 -19.2 dBm
Tx, -25 dBm, 2-FSK, 868 MHz
Tx, -25 dBm, 2-FSK, 915 MHz -25.0 -23.3 dBm
Tx, -30 dBm, 2-FSK, 868 MHz
Tx, -30 dBm, 2-FSK, 915 MHz -30.0 -26.2 dBm
Tx, -35 dBm, 2-FSK, 868 MHz
Tx, -35 dBm, 2-FSK, 915 MHz -35.0 -27.8 dBm
1. Operating mode

Hardware specifications SPSGRF
10/24 DocID027664 Rev 6
3.6 Pin connections
Figure 3. Pin connection diagram
Table 9. Pin assignment
Name Type Pin# Description Alt
function V max. tolerance Initial state
SPI interface
SPI_CLK I 7 SPI CLOCK (Max. 8 MHz) Vin
SPI_MISO O 8 SPI MISO (MASTER in / SLAVE out) Vin
SPI_MOSI I 9 SPI MOSI (MASTER out SLAVE in) Vin
SPI_CS I 10 SPI “Chip Select” (SPI slave select) Vin
Power and ground
Vin 5V
in (1.8V - 3.6V max.)
GND 6 GND
Module shutdown
SDN I 11 Shutdown input (active high) (1.8V - 3.6V max.)
GPIO - general purpose input/output
GPIO [0] I/O 4 Programmable input / output &
analog temperature output (1.8V - Vin max.) Digital output.
Low power
GPIO [1] I/O 3 Programmable input / output (1.8V - Vin max.) Digital output.
Low power
GPIO [2] I/O 2 Programmable input / output (1.8V - Vin max.) Digital output.
Low power
GPIO [3] I/O 1 Programmable input / output (1.8V - Vin max.) Digital output.
Low power