STM32W108CB STMicroelectronics, STM32W108CB Datasheet - Page 83

• Manufacturer Part Number: STM32W108CB
• Description: High-performance, IEEE 802.15.4 wireless system-on-chip with embedded Flash memory
• Manufacturer: STMicroelectronics

Specifications of STM32W108CB

• Receive Current (w/ Cpu): 27 mA
• Transmit Current (w/ Cpu, +3 Dbm Tx): 31 mA
• Low Deep Sleep Current, With Retained Ram And Gpio: 400 nA/800 nA with/without sleep timer
• Standard Arm Debug Capabilities: Flash patch & breakpoint; data watchpoint & trace; instrumentation trace macrocell
• Single Voltage Operation: 2.1-3.6 V with internal 1.8 V and 1.25 V regulators

STM32W108HB STM32W108CC STM32W108CB STM32W108CZ
Table 45.
1. The notation xxx means that the corresponding column header below is inserted to form the field name.
9.4.2
MST ORD PHA POL
0
0
0
0
0
SCx_SPICFG
SC_SPIxxx
0
0
0
0
1
SPI slave mode formats
Operation
When the slave select (nSSEL) signal is asserted by the master, SPI transmit data is driven
to the output pin MISO, and SPI data is received from the input pin MOSI. The nSSEL pin
has to be asserted to enable the transmit serializer to drive data to the output signal MISO.
A falling edge on nSSEL resets the SPI slave shift registers.
Characters transmitted and received by the SPI slave controller are buffered in the transmit
and receive FIFOs that are both 4 entries deep. When software writes a character to the
SCx_DATA register, it is pushed onto the transmit FIFO. Similarly, when software reads from
the SCx_DATA register, the character returned is pulled from the receive FIFO. If the
transmit and receive DMA channels are used, the DMA channels also write to and read from
the transmit and receive FIFOs.
0
0
1
1
-
(1)
0
1
0
1
-
Same as above except LSB first instead of MSB first.
MISO
MISO
MISO
MISO
nSSEL
SCLK
MOSI
SCLK
SCLK
nSSEL
SCLK
MOSI
MOSI
nSSEL
MOSI
out
out
out
out
in
in
in
in
in
in
in
in
RX[7]
RX[7]
TX[7]
RX[7]
TX[7]
RX[7]
TX[7]
TX[7]
Doc ID 16252 Rev 13
RX[6]
TX[6]
RX[6]
RX[6]
TX[6]
RX[6]
TX[6]
TX[6]
RX[5]
TX[5]
RX[5]
TX[5]
RX[5]
TX[5]
RX[5]
TX[5]
Frame format
RX[4]
TX[4]
RX[4]
RX[4]
TX[4]
RX[4]
TX[4]
TX[4]
RX[3]
TX[3]
RX[3]
RX[3]
TX[3]
RX[3]
TX[3]
TX[3]
RX[2]
TX[2]
RX[2]
RX[2]
TX[2]
TX[2]
RX[2]
TX[2]
RX[1]
TX[1]
RX[1]
RX[1]
TX[1]
RX[1]
TX[1]
TX[1]
RX[0]
TX[0]
RX[0]
RX[0]
TX[0]
RX[0]
TX[0]
TX[0]
Serial interfaces
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