ST7FLIT19BY0M3(2007) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

ST7FLIT19BY0M3
(Rev.:2007)

8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, 5 TIMERS, SPI

STMicroelectronics 

I/O PORTS (Cont’d)

Table 9. I/O Configurations

PAD

PAD

ST7LITE1xB

Hardware Configuration

DR REGISTER ACCESS

DR

W

REGISTER

R

DATA BUS

FROM

OTHER

PINS

ALTERNATE INPUT

To on-chip peripheral

EXTERNAL INTERRUPT

SOURCE (eix)

INTERRUPT COMBINATIONAL POLARITY

CONDITION

LOGIC SELECTION

ANALOG INPUT

DR REGISTER ACCESS

DR

R/W

REGISTER

DATA BUS

PAD

DR REGISTER ACCESS

DR

R/W

REGISTER

DATA BUS

ALTERNATE

ENABLE

BIT

ALTERNATE

OUTPUT

From on-chip peripheral

Notes:

1. When the I/O port is in input configuration and the associated alternate function is enabled as an output,

reading the DR register will read the alternate function output status.

2. When the I/O port is in output configuration and the associated alternate function is enabled as an input,

the alternate function reads the pin status given by the DR register content.

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