MCBSTM32EXL Keil, MCBSTM32EXL Datasheet - Page 143

• Manufacturer Part Number: MCBSTM32EXL
• Description: BOARD EVALUATION FOR STM32F103ZE
• Manufacturer: Keil

Specifications of MCBSTM32EXL

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

RM0008
8.1.9
Figure 16. Output configuration
1. V
Alternate function configuration
When the I/O Port is programmed as Alternate Function:
●
●
●
●
●
●
●
The
Also, refer to
A set of Alternate Function I/O registers allow you to remap some alternate functions to
different pins. Refer to
Write
Read/write
Read
DD_FT
Figure 17 on page 144
The Output Buffer is turned on in Open Drain or Push-Pull configuration
The Output Buffer is driven by the signal coming from the peripheral (alternate function
out)
The Schmitt Trigger Input is activated
The weak pull-up and pull-down resistors are disabled.
The data present on the I/O pin is sampled into the Input Data Register every APB2
clock cycle
A read access to the Input Data Register gets the I/O state in open drain mode
A read access to the Output Data register gets the last written value in Push-Pull mode
is a potential specific to five-volt tolerant I/Os and different from V
Section 8.4: AFIO registers on page 158
General-purpose and alternate-function I/Os (GPIOs and AFIOs)
shows the Alternate Function Configuration of the I/O Port bit.
Output driver
Input driver
Doc ID 13902 Rev 9
trigger
TTL Schmitt
control
Output
on
for further information.
V
V
SS
DD
P-MOS
N-MOS
Push-pull or
Open-drain
DD
.
V
V
DD
SS
or V
Protection
diode
Protection
diode
DD_FT
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I/O pin
(1)