STM32W108HB STMicroelectronics, STM32W108HB Datasheet - Page 143

• Manufacturer Part Number: STM32W108HB
• Description: High-performance, IEEE 802.15.4 wireless system-on-chip with embedded Flash memory
• Manufacturer: STMicroelectronics

Specifications of STM32W108HB

• Receive Current (w/ Cpu): 27 mA
• Transmit Current (w/ Cpu, +3 Dbm Tx): 31 mA
• Low Deep Sleep Current, With Retained Ram And Gpio: 400 nA/800 nA with/without sleep timer
• Standard Arm Debug Capabilities: Flash patch & breakpoint; data watchpoint & trace; instrumentation trace macrocell
• Single Voltage Operation: 2.1-3.6 V with internal 1.8 V and 1.25 V regulators

STM32W108HB STM32W108CC STM32W108CB STM32W108CZ
Slave mode: Trigger mode
In Trigger mode the counter starts in response to an event on a selected input.
In the following example, the up-counter starts in response to a rising edge on the TI2 input:
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When a rising edge occurs on TI2, the counter starts counting on the internal clock and the
INT_TIMTIF flag is set.
The delay between the rising edge on TI2 and the actual start of the counter is due to the
resynchronization circuit on the TI2 input.
Figure 43. Control circuit in Trigger mode
Configure channel 2 to detect rising edges on TI2 Configure the input filter duration. In
this example, no filter is required so TIM_IC2F = 0000. The capture prescaler is not
used for triggering, so it is not configured. The TIM_CC2S bits select the input capture
source only, TIM_CC2S = 01 in the TIMx_CCMR1 register. Write TIM_CC2P = 0 in the
TIMx_CCER register to validate the polarity and detect high level only.
Configure the timer in Trigger mode by writing TIM_SMS = 110 in the TIMx_SMCR
register. Select TI2 as the input source by writing TIM_TS = 110 in the TIMx_SMCR
register.
Doc ID 16252 Rev 13
General-purpose timers
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