STM32W108CBU6 STMICROELECTRONICS [STMicroelectronics], STM32W108CBU6 Datasheet - Page 110

• Manufacturer Part Number: STM32W108CBU6
• Description: High-performance, IEEE 802.15.4 wireless system-on-chip
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

General-purpose timers
Note:
8.1.15
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When a rising edge occurs on TI1 (Timer 1), both counters start counting synchronously on
the internal clock and both timers' INT_TIMTIF flags are set.
In this example both timers are initialized before starting by setting their respective TIM_UG
bits. Both counters starts from 0, but an offset can be inserted between them by writing any
of the counter registers (TIMx_CNT). The master/slave mode inserts a delay between
CNT_EN and CK_PSC on Timer 1.
Figure 45. Triggering timer 1 and 2 with timer 1 TI1 input
Timer signal descriptions
Table 14.
CK_PSC
Configure Timer 2 to get the input trigger from Timer 1 (TIM_TS = 000 in the
TIM2_SMCR register).
Configure Timer 2 in trigger mode (TIM_SMS = 110 in the TIM2_SMCR register).
CK_INT
Signal
ICyPS
ETRF
ETRP
ITR0
ETR
ICy
Timer signal descriptions
Internal/external
External
Internal
Internal
Internal
Internal
Internal
Internal
Internal
Doc ID 16252 Rev 2
Internal clock source: connects to STM32W108 peripheral
clock (PCLK) in internal clock mode.
Input to the clock prescaler.
External trigger input (used in external timer mode 2): a clock
selected by TIM_EXTRIGSEL in TIMx_OR.
External trigger: ETRP after filtering.
External trigger: ETR after polarity selection, edge detection
and prescaling.
Input capture or clock: TIy after filtering and edge detection.
Input capture signal after filtering, edge detection and
prescaling: input to the capture register.
Internal trigger input: connected to the other timer's output,
TRGO.
STM32W108CB, STM32W108HB
Description