STM32W108C8U64TR STMicroelectronics, STM32W108C8U64TR Datasheet - Page 147
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STM32W108C8U64TR
Manufacturer Part Number
STM32W108C8U64TR
Description
16/32-BITS MICROS
Manufacturer
STMicroelectronics
Series
STM32r
Datasheet
1.STM32W108C8U63TR.pdf
(207 pages)
Specifications of STM32W108C8U64TR
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
Bits [14:12] TIM_OC4M: Output Compare 4 Mode. (Applies only if TIM_CC4S = 0
Bit 11 TIM_OC4BE: Output Compare 4 Buffer Enable. (Applies only if TIM_CC4S = 0
Bit 10 TIM_OC4FE: Output Compare 4 Fast Enable. (Applies only if TIM_CC4S = 0)
Define the behavior of the output reference signal OC4REF from which OC4 derives. OC4REF
is active high whereas OC4’s active level depends on the TIM_CC4P bit.
000: Frozen - The comparison between the output compare register TIMx_CCR4 and the
counter TIMx_CNT has no effect on the outputs.
001: Set OC4REF to active on match. The OC4REF signal is forced high when the counter
TIMx_CNT matches the capture/compare register 4 (TIMx_CCR4)
010: Set OC4REF to inactive on match. OC4REF signal is forced low when the counter
TIMx_CNT matches the capture/compare register 4 (TIMx_CCR4).
011: Toggle - OC4REF toggles when TIMx_CNT = TIMx_CCR4.
100: Force OC4REF inactive.
101: Force OC4REF active.
110: PWM mode 1 - In up-counting, OC4REF is active as long as TIMx_CNT < TIMx_CCR4,
otherwise OC4REF is inactive. In down-counting, OC4REF is inactive if
TIMx_CNT > TIMx_CCR4, otherwise OC4REF is active.
111: PWM mode 2 - In up-counting, OC4REF is inactive if TIMx_CNT < TIMx_CCR4, otherwise
OC4REF is active. In down-counting, OC4REF is active if TIMx_CNT > TIMx_CCR4, otherwise
it is inactive.
Note: In PWM mode 1 or 2, the OC4REF level changes only when the result of the
0: Buffer register for TIMx_CCR4 is disabled. TIMx_CCR4 can be written at anytime, the new
value is used by the shadow register immediately.
1: Buffer register for TIMx_CCR4 is enabled. Read/write operations access the buffer register.
TIMx_CCR4 buffer value is loaded in the shadow register at each update event.
Note: The PWM mode can be used without enabling the buffer register only in one pulse mode
This bit speeds the effect of an event on the trigger in input on the OC4 output.
0: OC4 behaves normally depending on the counter and TIM_CCR4 values even when the
trigger is ON. The minimum delay to activate OC4 when an edge occurs on the trigger input is 5
clock cycles.
1: An active edge on the trigger input acts like a compare match on the OC4 output. OC4 is set
to the compare level independently from the result of the comparison. Delay to sample the
trigger input and to activate OC4 output is reduced to 3 clock cycles. TIM_OC4FE acts only if
the channel is configured in PWM 1 or PWM 2 mode.
comparison changes or when the output compare mode switches from “frozen” mode to
“PWM” mode.
(TIM_OPM bit set in the TIMx_CR2 register), otherwise the behavior is undefined.
Doc ID 018587 Rev 1
General-purpose timers
147/207
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