STM32W108CZ STMicroelectronics, STM32W108CZ Datasheet - Page 79

• Manufacturer Part Number: STM32W108CZ
• Description: High-performance, IEEE 802.15.4 wireless system-on-chip with embedded Flash memory
• Manufacturer: STMicroelectronics

Specifications of STM32W108CZ

• 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
9.3.1
Table 42.
Setup and configuration
Both serial controllers, SC1 and SC2, support SPI master mode. SPI master mode is
enabled by the following register settings:
●
●
●
The SPI serial clock (SCLK) is produced by a programmable clock generator. The serial
clock is produced by dividing down 12 MHz according to this equation:
EXP is the value written to the SCx_RATEEXP register and LIN is the value written to the
SCx_RATELIN register. The SPI master mode clock may not exceed 6 Mbps, so EXP and
LIN cannot both be zero.
The SPI master controller supports various frame formats depending upon the clock polarity
(SC_SPIPOL), clock phase (SC_SPIPHA), and direction of data (SC_SPIORD) (see
master mode formats on page
are defined within the SCx_SPICFG register.
Direction
GPIO
configuration
SC1 pin
SC2 pin
Parameter
The serial controller mode register (SCx_MODE) is ‘2’.
The SC_SPIMST bit in the SPI configuration register (SCx_SPICFG) is ‘1’.
The SC_TWIACK bit in the I
SPI master GPIO usage
Alternate Output
(push-pull)
Output
MOSI
PB1
PA0
Doc ID 16252 Rev 13
80). The bits SC_SPIPOL, SC_SPIPHA, and SC_SPIORD
Rate
2
C control register (SCx_TWICTRL2) is ‘1’.
=
---------------------------------------- -
(
LIN
12MHz
+
MISO
Input
Input
PB2
1
PA1
)x2
EXP
Alternate Output (push-pull)
Special SCLK mode
Serial interfaces
Output
SCLK
PB3
PA2
SPI
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