STM32W108CBU64TR STMicroelectronics, STM32W108CBU64TR Datasheet - Page 78

• Manufacturer Part Number: STM32W108CBU64TR
• Description: MCU, RF, 32BIT, 128K FLASH, 48VFQFPN
• Manufacturer: STMicroelectronics
• Series: STM32r

Specifications of STM32W108CBU64TR

• Controller Family/series: STM32
• Core Size: 32bit
• No. Of I/o's: 24
• Program Memory Size: 128KB
• Ram Memory Size: 8KB
• Cpu Speed: 24MHz
• Oscillator Type: Internal, External
• No. Of Timers: 2
• Rohs Compliant: Yes
• Applications: RF4CE, Remote Control
• Core Processor: ARM® Cortex-M3™
• Program Memory Type: FLASH (128 kB)
• Controller Series: STM32W
• Ram Size: 8K x 8
• Interface: I²C, SPI, UART/USART
• Number Of I /o: 24
• Voltage - Supply: 1.18 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-VFQFN Exposed Pad
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Serial interfaces
9.4.1
Table 16.
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MST ORD PHA POL
0
0
0
SCx_SPICFG
SC_SPIxxx
0
0
0
Table 15.
Setup and configuration
Both serial controllers, SC1 and SC2, support SPI slave mode. SPI slave mode is enabled
by the following register settings:
●
●
The SPI slave controller receives its clock from an external SPI master device and supports
rates up to 5 Mbps.
The SPI slave controller supports various frame formats depending upon the clock polarity
(SC_SPIPOL), clock phase (SC_SPIPHA), and direction of data (SC_SPIORD) (see Table 8
6). The SC_SPIPOL, SC_SPIPHA, and SC_SPIORD bits are defined within the
SCx_SPICFG registers.
SPI slave mode formats
Direction
GPIO
configuration
SC1 pin
SC2 pin
0
0
1
(1)
Parameter
The serial controller mode register, SCx_MODE, is ‘2’.
The SC_SPIMST bit in the SPI configuration register, SCx_SPICFG, is ‘0’.
0
1
0
MISO
MISO
MISO
nSSEL
SCLK
MOSI
SCLK
SCLK
MOSI
nSSEL
MOSI
SPI slave GPIO usage
out
out
out
in
in
in
in
in
in
MOSI
Input
Input
PB2
PA0
RX[7]
RX[7]
TX[7]
TX[7]
RX[7]
TX[7]
Doc ID 16252 Rev 8
RX[6]
TX[6]
RX[6]
TX[6]
RX[6]
TX[6]
Alternate Output
RX[5]
TX[5]
RX[5]
TX[5]
RX[5]
TX[5]
(push-pull)
Output
MISO
PB1
PA1
Frame format
RX[4]
TX[4]
RX[4]
TX[4]
RX[4]
TX[4]
RX[3]
TX[3]
RX[3]
TX[3]
RX[3]
TX[3]
STM32W108CB, STM32W108HB
RX[2]
TX[2]
RX[2]
TX[2]
RX[2]
TX[2]
SCLK
Input
Input
PB3
PA2
RX[1]
TX[1]
RX[1]
TX[1]
RX[1]
TX[1]
RX[0]
TX[0]
RX[0]
TX[0]
RX[0]
TX[0]
nSSEL
Input
Input
PB4
PA3