STM32W108CBU64TR STMicroelectronics, STM32W108CBU64TR Datasheet - Page 84

• 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
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Interrupts
I
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To enable CPU interrupts, set the desired interrupt bits in the second level INT_SCxCFG
register, and enable the top level SCx interrupt in the NVIC by writing the INT_SCx bit in the
INT_CFGSET register.
Universal asynchronous receiver / transmitter (UART)
The SC1 UART is enabled by writing 1 to SC1_MODE. The SC2 serial controller does not
include UART functions.
The UART supports the following features:
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The UART uses two signals to transmit and receive serial data:
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If RTS/CTS flow control is enabled, these two signals are also used:
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The GPIO pins assigned to these signals are shown in
Table 20.
1. Only used if RTS/CTS hardware flow control is enabled.
2
Direction
GPIO configuration
SC1 pin
C master controller interrupts are generated on the following events:
Bus command (SC_TWISTART/SC_TWISTOP) completed (0 to 1 transition of
SC_TWICMDFIN)
Character transmitted and slave device responded with NACK
Character transmitted (0 to 1 transition of SC_TWITXFIN)
Character received (0 to 1 transition of SC_TWIRXFIN)
Received and lost character while receive FIFO was full (receive overrun error)
Transmitted character while transmit FIFO was empty (transmit underrun error)
Flexible baud rate clock (300 bps to 921.6 bps)
Data bits (7 or 8)
Parity bits (none, odd, or even)
Stop bits (1 or 2)
False start bit and noise filtering
Receive and transmit FIFOs
Optional RTS/CTS flow control
Receive and transmit DMA channels
TXD (Transmitted Data) - serial data received by the STM32W108
RXD (Received Data) - serial data sent by the STM32W108
nRTS (Request To Send) - indicates the STM32W108 is able to receive data RXD
nCTS (Clear To Send) - inhibits sending data from the STM32W108 if not asserted
Parameter
UART GPIO usage
Alternate Output
(push-pull)
Output
TXD
PB1
Doc ID 16252 Rev 8
Input
Input
RXD
PB2
Table
STM32W108CB, STM32W108HB
20.
nCTS
Input
Input
PB3
(1)
Alternate Output
(push-pull)
nRTS
Output
PB4
(1)