The P1 is Particle's tiny Wi-Fi module that contains both the Broadcom Wi-Fi chip and a reprogrammable STM32 32-bit ARM Cortex-M3 microcontroller. The P1
comes preloaded with Particle firmware libraries, just like our dev kits, and it's designed to simplify your transition from prototype to production. The P1 is the
PØ's big brother; it's a bit bigger and a tad more expensive, but it includes some extra flash and an antenna and u.FL connector on board. Every P1 includes free
cloud service.
FEATURES
Particle P1 Wi-Fi module
Broadcom BCM43362 Wi-Fi chip
802.11b/g/n Wi-Fi
STM32F205 120Mhz ARM Cortex M3
1MB flash, 128KB RAM
1MB external SPI flash
Integrated PCB antenna
Integrated u.FL connector for external antenna
Integrated RF switch
25 Mixed-signal GPIO and advanced peripherals
Open source design
Real-time operating system (FreeRTOS)
Soft AP setup
FCC, CE and IC certified
Interfaces
BLOCK DIAGRAM
POWER
Power to the P1 is supplied via 3 different inputs: VBAT_WL (pin 2 & 3), VDDIO_3V3_WL (pin 5), VDD_3V3 (pin 26 & 27). Optionally +3.3V may be supplied to
VBAT_MICRO (pin 38) for data retention in low power sleep modes. Each of these inputs also requires a 0.1uF and 10uF ceramic decoupling capacitor, located
as close as possible to the pin (see Fig 1). The voltage should be regulated between 3.0VDC and 3.6VDC.
Typical current consumption is 80mA with a 3.3V input. Deep sleep quiescent current is 160uA. When powering the P1 make sure the power supply can handle
600mA continuous. If a lesser power supply is provided, peak currents drawn from the P1 when transmitting and receiving will result in voltage sag at the input
which may cause a system brown out or intermittent operation. Likewise, the power source should be sufficient enough to source 1A of current to be on the safe
side.
Fig. 1 Recommended
power connections with decoupling capacitors.
RF
The RF section of the P1 includes an on-board PCB trace antenna and a u.FL connector which allows the user to connect an external antenna. These two
antenna outputs are selectable via a user API, made possible by an integrated RF switch.
The default selected antenna will be the PCB antenna.
The area surrounding the PCB antenna on the carrier PCB should be free of ground planes and signal traces for maximum Wi-Fi performance.
FCC APPROVED ANTENNAS
Antenna Type
Manufacturer MFG. Part # Gain
104-1001
-
2.15dBi
-
Dipole antenna LumenRadio
PCB Antenna
Included
PERIPHERALS AND GPIO
The P1 module has ton of capability in a super small footprint, with analog, digital and communication interfaces.
Note: P1
pin names will be preserved as they are named in the USI datasheet, however for the scope of this datasheet we will also refer to them as their Photon
and code equivalents, i.e. D7 instead of MICRO_JTAG_TMS and A2 instead of MICRO_GPIO_13. This will help to simplify descriptions, while providing a quick
reference for code that can be written for the P1 such as
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Embedded System
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