ST7LITE20F2 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

ST7LITE20F2

8-bit microcontroller with single voltage Flash memory, data EEPROM, ADC, Timers, SPI

STMicroelectronics 

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I/O ports

ST7LITE20F2 ST7LITE25F2 ST7LITE29F2

Note:

Refer to the Section 10.7: Device-specific I/O port configuration for device specific

information.

Table 22. I/O port mode options(1)

Configuration mode

Pull-up P-buffer

Diodes

to VDD

to VSS

Floating with/without interrupt

Off

Input

Off

Pull-up with/without interrupt

On

On

Push-pull

On

On

Off

Output Open drain (logic level)

Off

True open drain

NI

NI

NI(2)

1. Legend:

NI - not implemented

Off - implemented not activated

On - implemented and activated.

2. The diode to VDD is not implemented in the true open drain pads. A local protection between the pad and

VOL is implemented to protect the device against positive stress.

Table 23. I/O configurations

I/O port

Hardware configuration

Input(1)

VDD

NOTE 3

RPU

Pull-up

condition

Pad

DR register access

DR

W

register

R

Databus

From

other

pins

Interrupt

condition

Combinational

logic

Alternate input

To on-chip peripheral

External interrupt

source (eix)

Polarity

selection

Analog input

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Doc ID 8349 Rev 5

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