STM32W108CC STMicroelectronics, STM32W108CC Datasheet - Page 145
STM32W108CC
Manufacturer Part Number
STM32W108CC
Description
High-performance, IEEE 802.15.4 wireless system-on-chip with embedded Flash memory
Manufacturer
STMicroelectronics
Datasheet
1.STM32W108CC.pdf
(232 pages)
Specifications of STM32W108CC
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
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STM32W108HB STM32W108CC STM32W108CB STM32W108CZ
10.1.14
Note:
Timer synchronization
The two timers can be linked together internally for timer synchronization or chaining. A
timer configured in Master mode can reset, start, stop or clock the counter of the other timer
configured in Slave mode.
Figure 45
blocks.
Using one timer as prescaler for the other timer
For example, to configure Timer 1 to act as a prescaler for Timer 2 (see
●
●
●
●
If OCy is selected on Timer 1 as trigger output (TIM_MMS = 1xx), its rising edge is used to
clock the counter of Timer 2.
Figure 45. Master/slave timer example
Configure Timer 1 in Master mode so that it outputs a periodic trigger signal on each
update event. Writing TIM_MMS = 010 in the TIM1_CR2 register causes a rising edge
to be output on TRGO each time an update event is generated.
To connect the TRGO output of Timer 1 to Timer 2, configure Timer 2 in slave mode
using ITR0 as an internal trigger. Select this through the TIM_TS bits in the
TIM2_SMCR register (writing TIM_TS = 000).
Put the slave mode controller in external clock mode 1 (write TIM_SMS = 111 in the
TIM2_SMCR register). This causes Timer 2 to be clocked by the rising edge of the
periodic Timer 1 trigger signal (which corresponds to the Timer 1 counter overflow).
Finally both timers must be enabled by setting their respective TIM_CEN bits
(TIMx_CR1 register).
presents an overview of the trigger selection and the master mode selection
Doc ID 16252 Rev 13
General-purpose timers
Figure
45):
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