STM32W108CBU64TR STMicroelectronics, STM32W108CBU64TR Datasheet - Page 129

• 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

STM32W108CB, STM32W108HB
10.1.12
Figure 38. Example of counter operation in encoder interface mode
Figure 39
configuration as above except TIM_CC1P = 1).
Figure 39. Example of encoder interface mode with IC1FP1 polarity inverted
The timer configured in encoder interface mode provides information on a sensor's current
position. To obtain dynamic information (speed, acceleration/deceleration), measure the
period between two encoder events using a second timer configured in capture mode. The
output of the encoder that indicates the mechanical zero can be used for this purpose.
Depending on the time between two events, the counter can also be read at regular times.
Do this by latching the counter value into a third input capture register. (In this case the
capture signal must be periodic and can be generated by another timer).
Timer input XOR function
The TIM_TI1S bit in the TIM1_CR2 register allows the input filter of channel 1 to be
connected to the output of a XOR gate that combines the three input pins TIMxC2 to
TIMxC4.
gives an example of counter behavior when IC1FP1 polarity is inverted (same
Doc ID 16252 Rev 8
General-purpose timers
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