STM32W108HBU61TR STMicroelectronics, STM32W108HBU61TR Datasheet - Page 87

• Manufacturer Part Number: STM32W108HBU61TR
• Description: 16/32-BITS MICROS
• Manufacturer: STMicroelectronics
• Series: STM32r

Specifications of STM32W108HBU61TR

• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Applications: IEEE 802.15.4 Wireless
• Processing Unit: Microprocessor
• Operating Supply Voltage (min): 1.18V
• Operating Supply Voltage (typ): 1.25V
• Operating Supply Voltage (max): 1.32V
• Package Type: VFQFPN EP
• Pin Count: 40
• Mounting: Surface Mount
• Rad Hardened: No
• 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: 18
• Voltage - Supply: 1.18 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 40-VFQFN Exposed Pad
• Lead Free Status / Rohs Status: Compliant

STM32W108HB, STM32W108CC, STM32W108CB and STM32W108CZ
9.5.3
9.6
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 49.
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 9
Input
Input
RXD
PB2
Table
49.
nCTS
Input
Input
PB3
(1)
Serial interfaces
Alternate Output
(push-pull)
nRTS
Output
PB4
(1)
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