ST STM32F103 series Reference Manual

DocID13902 Rev 15 166/1128
RM0008 General-purpose and alternate-function I/Os (GPIOs and AFIOs)
195
9.1.10 Analog configuration
When the I/O Port is programmed as Analog configuration:
• The Output Buffer is disabled.
• The Schmitt Trigger Input is de-activated providing zero consumption for every analog
value of the I/O pin. The output of the Schmitt Trigger is forced to a constant value (0).
• The weak pull-up and pull-down resistors are disabled.
• Read access to the Input Data Register gets the value “0”.
The Figure 18 on page 166 shows the high impedance-analog configuration of the I/O Port
bit.
Figure 18. High impedance-analog configuration
9.1.11 GPIO configurations for device peripherals
Table 22 to Table 33 give the GPIO configurations of the device peripherals.
From on-chip
peripheral
To on-chip
peripheral
Analog Input
I/O pin
TTL Schmitt
trigger
V
SS
V
DD
or V
DD_FT
(1)
Protection
diode
Protection
diode
off
Input driver
0
Input data register
Output data register
Read/write
Read
Bit set/reset registers
Write
ai14786
Table 22. Advanced timers TIM1/TIM8
TIM1/8 pinout Configuration GPIO configuration
TIM1/8_CHx
Input capture channel x Input floating
Output compare channel x Alternate function push-pull
TIM1/8_CHxN Complementary output channel x Alternate function push-pull
TIM1/8_BKIN Break input Input floating
TIM1/8_ETR External trigger timer input Input floating

ST STM32F103 series Specifications

General

Brand	ST
Model	STM32F103 series
Category	Microcontrollers
Language	English