Telit Wireless Solutions SE873 Series, Product User Manual

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SE873 Family Product User Guide Electrical Interface
1VV0301216
Rev.4
Page 40 of 69 2018-08-24
I
2
C Operation
See section 8.5.1 Primary Serial Port Configuration to specify I
2
C interface for the primary
port..
The secondary port is configured by loading the appropriate FW.
Upon power up, the module acts as a master transmitter and a slave receiver (multi-master
mode).
Clock rates of 100 and 400 kbps are supported.
Default addresses – Transmit: 0x60, Receive: 0x62.
After configuration, the pins are defined below:
When used in I
2
C mode, pull-ups in the range of
1K to 2.2K to a 1.8V to 3.6V power supply are
required on the clock and data lines.
Table 8-11 I2C Pin Assignments
SPI Operation
See section 8.5.1 Primary Serial Port Configuration to specify SPI interface for the primary
port..
The 2
nd
port cannot be configured for SPI interface since there are only two pins available.
SPI is supported in the slave mode. The MicroWire format is not supported.
Maximum speed is 6.8 MHz.
After configuration, the pins are defined below:
Table 8-12 SPI Mode Pin Assignments
Pin Name I
2
C Function
Primary Port
TX I
2
C Clock (SCL)
RX I
2
C Data (SDA)
GPIO6 Not used
GPIO7 Not used
Secondary Port
TX I
2
C Data (SDA)
RX I
2
C Clock (SCL)
Pin Name SPI Function
Primary Port
TX SPI Data Out (MISO)
RX SPI Data In (MOSI)
GPIO6 SPI Clock (SCLK)
GPIO7 SPI Chip Select (CS#)
Secondary Port
Not Available