STM32W108HBU64TR STMicroelectronics, STM32W108HBU64TR Datasheet - Page 142
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STM32W108HBU64TR
Manufacturer Part Number
STM32W108HBU64TR
Description
16/32-BITS MICROS
Manufacturer
STMicroelectronics
Series
STM32r
Datasheet
1.STM32W108B-KEXT.pdf
(209 pages)
Specifications of STM32W108HBU64TR
Applications
RF4CE, Remote Control
Core Processor
ARM® Cortex-M3™
Program Memory Type
FLASH (128 kB)
Controller Series
STM32W
Ram Size
8K x 8
Interface
I²C, SPI, UART/USART
Number Of I /o
18
Voltage - Supply
1.18 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
40-VFQFN Exposed Pad
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
STM32W108HBU64TR
Manufacturer:
TDK
Quantity:
30 000
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General-purpose timers
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Bits [13:12] TIM_ETPS: External Trigger Prescaler
Bits [11:8] TIM_ETF: External Trigger Filter
Bits [6:4] TIM_TS: Trigger Selection
Bit 14 TIM_ECE: External Clock Enable
Bit 7 TIM_MSM: Master/Slave Mode
This bit enables external clock mode 2.
0: External clock mode 2 disabled.
1: External clock mode 2 enabled. The counter is clocked by any active edge on the ETRF
signal.
Note: Setting the TIM_ECE bit has the same effect as selecting external clock mode 1 with
External trigger signal ETRP frequency must be at most 1/4 of CK frequency. A prescaler can
be enabled to reduce ETRP frequency. It is useful with fast external clocks.
00: ETRP prescaler off.
01: Divide ETRP frequency by 2.
10: Divide ETRP frequency by 4.
11: Divide ETRP frequency by 8.
This defines the frequency used to sample the ETRP signal, f
digital filter applied to ETRP. The digital filter is made of an event counter in which N events are
needed to validate a transition on the output:
0000: f
0001: f
0010: f
0011: f
0100: f
0101: f
0110: f
0111: f
Note: PCLK is 12 MHz when the STM32W108 is using the 24 MHz crystal oscillator, and 6
0: No action.
1: The effect of an event on the trigger input (TRGI) is delayed to allow exact synchronization
between the current timer and the slave (through TRGO). It is useful for synchronizing timers
on a single external event.
This bit field selects the trigger input used to synchronize the counter.
000 : Internal Trigger 0 (ITR0).
100 : TI1 Edge Detector (TI1F_ED).
101 : Filtered Timer Input 1 (TI1FP1).
110 : Filtered Timer Input 2 (TI2FP2).
111 : External Trigger input (ETRF).
Note: These bits must be changed only when they are not used (when TIM_SMS=000) to
Sampling
Sampling
Sampling
Sampling
Sampling
Sampling
Sampling
Sampling
TRGI connected to ETRF (TIM_SMS=111 and TIM_TS=111).
mode, gated mode and trigger mode. TRGI must not be connected to ETRF in this case
(the TIM_TS bits must not be 111).
If external clock mode 1 and external clock mode 2 are enabled at the same time, the
external clock input will be ETRF.
MHz if using the 12 MHz RC oscillator.
avoid detecting spurious edges during the transition.
It is possible to use this mode simultaneously with the following slave modes: reset
= PCLK/2, N=8.
= PCLK/4, N=8.
= PCLK, no filtering.
= PCLK, N=2.
= PCLK, N=4.
= PCLK, N=8.
= PCLK/2, N=6.
= PCLK/4, N=6.
Doc ID 16252 Rev 8
1111: f
1110: f
1101: f
1100: f
1011: f
1010: f
1001: f
1000: f
Sampling
Sampling
Sampling
Sampling
Sampling
Sampling
Sampling
Sampling
STM32W108CB, STM32W108HB
Sampling
= PCLK/32, N=6.
= PCLK/32, N=5.
= PCLK/16, N=8.
= PCLK/16, N=6.
= PCLK/16, N=5.
= PCLK/8, N=8.
= PCLK/8, N=6.
= PCLK/32, N=8.
, and the length of the
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