User's Manual

Flint Rehabilitation Devices, LLC
Flint Wireless Module – Users Manual
Date update: 11/26/2021
1.0 Introduction
The Flint Wireless Module is built around the nRF52832 microcontroller produced by Nordic
Semiconductors. The controller has an integrated 2.4gHz radio that supports a variety of wireless
protocols.
The Module provides breakouts for all 32 of the general purpose io pins on the nRF52832. It provides
the host controller with a low power 32.768kHz oscillator, a 32 MHz oscillator, and the necessary passive
components to use both the integrated LDO regulator on the host controller and the integrated dc/dc
regulator.
The module also includes a 2.4gHz ceramic chip antenna.
Specifications
Table 1: Recomended operating confitions
SYMBOL
PARAMETER
MIN
NORM
MAX
UNITS
VDD
Supply voltage
independent
of dcdc enable
1.7
3.0
3.6
V
T
R_VDD
Supply rise
time (0-1.7v)
60
Ms
TA
Operating
temperature
-40
25
85
o
C
Table 2: Absolute maximum ratings
MIN
MAX
UNIT
SUPPLY VOLTAGES
VDD
-0.3
3.9
V
VSS
0
V
I/O PIN VOLTAGE
V
I/O
VDD <= 3.6 V
-0.3
VDD+0.3V
V
V
I/O
VDD > 3.6 V
-0.3
3.9V
V
NFC ANTENNA PIN
CURRENT
I
NFC1/2
80
mA
RADIO
RF INPUT LEVEL
10
dBm