
NE866B1_Hardware_Design_Guide
1VV0301354 Rev. 6
Page
44
of
70
2018-02-28
I2C Port
The NE866B1 supports a dedicated port for I2C communication
I2C speed is limited to 10KHz.
The following table lists the available I2C signals on the NE866B1:
PAD
Signal
I/O
Default State
NOTE
B1
I2C_SDA
I/O
Pull Up
C2
I2C_SCL
I/O
Pull Up
Please refer to the AT command user guide for more information.
NOTE:
The I2C port is shared with SPI. When SPI is used, I2C cannot be
used and vice versa.
SIM Interface
The NE866B1 supports a standard SIM card interface with the below exceptions:
•
1.8V I/O only (3V SIM is not supported).
•
SIM PIN (SIM lock) feature is not supported.
•
SIM power OFF during PSM is an expected behavior
For more info on SIM implementation, please refer to the related User Guide (SIM Holder
Design Guides, 80000NT10001a).
5.8.1.
SIMIN Detection
PIN B5 is used as SIM DETECT input.
As long as SIMIN is not pulled low by the application board the module will use the
internal eSIM.
For using an external SIM the user must assert SIMIN low
NE866B1 modules ordered without eSIM support will always use the external SIM
regardless of the SIMIN state
ADC Converter
The NB866B1 is provided by one ADC converter. It is able to read a voltage level in the
range of 0.2÷1.7 volts applied on the ADC pin input, store and convert it into 10 bit word.
The input line is named as
ADC_IN1
and it is available on Pad
F4
The following table is showing the ADC characteristics:
Item
Min
Typical
Max
Unit
Input Voltage range
0.2
-
1.7
Volt
AD conversion
-
-
10
bits