STMicroelectronics STM32F05 series User Manual

RM0091 General-purpose timer (TIM14)
Doc ID 018940 Rev 1 369/742
Input capture mode
Bits 1:0 CC1S: Capture/Compare 1 selection
This bit-field defines the direction of the channel (input/output) as well as the used input.
00: CC1 channel is configured as output.
01: CC1 channel is configured as input, IC1 is mapped on TI1.
10: Reserved
11: Reserved
Note: CC1S bits are writable only when the channel is OFF (CC1E = 0 in TIMx_CCER).
Bits 15:8 Reserved
Bits 7:4 IC1F: Input capture 1 filter
This bit-field defines the frequency used to sample TI1 input and the length of the digital filter
applied to TI1. The digital filter is made of an event counter in which N events are needed to
validate a transition on the output:
0000: No filter, sampling is done at f
DTS
1000: f
SAMPLING
=f
DTS
/8, N=6
0001: f
SAMPLING
=f
CK_INT
, N=2 1001: f
SAMPLING
=f
DTS
/8, N=8
0010: f
SAMPLING
=f
CK_INT
, N=4 1010: f
SAMPLING
=f
DTS
/16, N=5
0011: f
SAMPLING
=f
CK_INT
, N=8 1011: f
SAMPLING
=f
DTS
/16, N=6
0100: f
SAMPLING
=f
DTS
/2, N=6 1100: f
SAMPLING
=f
DTS
/16, N=8
0101: f
SAMPLING
=f
DTS
/2, N=8 1101: f
SAMPLING
=f
DTS
/32, N=5
0110: f
SAMPLING
=f
DTS
/4, N=6 1110: f
SAMPLING
=f
DTS
/32, N=6
0111: f
SAMPLING
=f
DTS
/4, N=8 1111: f
SAMPLING
=f
DTS
/32, N=8
Note: In current silicon revision, f
DTS
is replaced in the formula by CK_INT when ICxF[3:0]= 1,
2 or 3.
Bits 3:2 IC1PSC: Input capture 1 prescaler
This bit-field defines the ratio of the prescaler acting on CC1 input (IC1).
The prescaler is reset as soon as CC1E=’0’ (TIMx_CCER register).
00: no prescaler, capture is done each time an edge is detected on the capture input
01: capture is done once every 2 events
10: capture is done once every 4 events
11: capture is done once every 8 events
Bits 1:0 CC1S: Capture/Compare 1 selection
This bit-field defines the direction of the channel (input/output) as well as the used input.
00: CC1 channel is configured as output
01: CC1 channel is configured as input, IC1 is mapped on TI1
10:
11:
Note: CC1S bits are writable only when the channel is OFF (CC1E = 0 in TIMx_CCER).

STMicroelectronics STM32F05 series Specifications

General

Brand	STMicroelectronics
Model	STM32F05 series
Category	Microcontrollers
Language	English