ST7FLU05MCE View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

ST7FLU05MCE

8-bit low cost, low pin-count MCU for automotive, with single voltage Flash memory, ADC, timers

STMicroelectronics 

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ST7LUS5, ST7LU05, ST7LU09

I/O ports

9.2.3 Alternate functions

When an on-chip peripheral is configured to use a pin, the alternate function is automatically

selected. This alternate function takes priority over the standard I/O programming under the

following conditions:

● When the signal is coming from an on-chip peripheral, the I/O pin is automatically

configured in output mode (push-pull or open drain according to the peripheral).

● When the signal is going to an on-chip peripheral, the I/O pin must be configured in

floating input mode. In this case, the pin state is also digitally readable by addressing

the DR register.

Note:

Input pull-up configuration can cause unexpected value at the input of the alternate

peripheral input.

When an on-chip peripheral use a pin as input and output, this pin has to be configured in

t(s) input floating mode.

c Figure 27. I/O port general block diagram

Produ t(s) Register

lete duc access

Alternate

output

1

0

Alternate

enable

so ro DR

- Ob te P DDR

t(s) sole OR

uc Ob OR SEL

If implemented

Prod t(s) - DDRSEL

solete roduc DR SEL

1

b P0

O leteEXTERNAL

INTERRUPT

Obso SOURCE (eix)

POLARITY

SELECTION

FROM

OTHER

BITS

VDD

P-buffer

(see Table 28 below)

P-buffer

(see Table 28 below)

VDD

Pull-up

condition

Pad

N-buffer

CMOS

SCHMITT

TRIGGER

Diodes

(see Table 28 below)

Analog

input

Alternate

input

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