STM32W108C8U63TR STMicroelectronics, STM32W108C8U63TR Datasheet - Page 115
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STM32W108C8U63TR
Manufacturer Part Number
STM32W108C8U63TR
Description
16/32-BITS MICROS
Manufacturer
STMicroelectronics
Series
STM32r
Datasheet
1.STM32W108C8U63TR.pdf
(207 pages)
Specifications of STM32W108C8U63TR
Applications
RF4CE, Remote Control
Core Processor
ARM® Cortex-M3™
Program Memory Type
FLASH (64 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
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STM32W108C8
Note:
Figure 25. TI2 external clock connection example
For example, to configure the up-counter to count in response to a rising edge on the TI2
input, use the following procedure:
1.
2.
The capture prescaler is not used for triggering, so it does not need to be configured.
3.
4.
5.
6.
When a rising edge occurs on TI2, the counter counts once and the INT_TIMTIF flag is set.
The delay between the rising edge on TI2 and the actual clock of the counter is due to the
resynchronization circuit on the TI2 input.
Figure 26. Control circuit in External Clock mode 1
Configure channel 2 to detect rising edges on the TI2 input by writing TIM_CC2S = 01
in the TIMx_CCMR1 register.
Configure the input filter duration by writing the TIM_IC2F bits in the TIMx_CCMR1
register (if no filter is needed, keep TIM_IC2F = 0000).
Select rising edge polarity by writing TIM_CC2P = 0 in the TIMx_CCER register.
Configure the timer in external clock mode 1 by writing TIM_SMS = 111 in the
TIMx_SMCR register.
Select TI2 as the input source by writing TIM_TS = 110 in the TIMx_SMCR register.
Enable the counter by writing TIM_CEN = 1 in the TIMx_CR1 register.
Doc ID 018587 Rev 1
General-purpose timers
115/207
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