PSD913F2 datasheet(18/94 Pages) STMICROELECTRONICS

18 / 94 page

PSD9XX Family

Preliminary Information

Table 7 shows the offset addresses to the PSD9XX registers relative to the CSIOP base

address. The CSIOP space is the 256 bytes of address that is allocated by the user to the

internal PSD9XX registers. Table 7 provides brief descriptions of the registers in CSIOP

space. For a more detailed description, refer to section 9.

8.0

PSD9XX

Description

and Address

Offset

Port A Port B Port C Port D Other*

Description

Data In

Reads Port pin as input,

MCU I/O input mode

Control

Selects mode between

MCU I/O or Address Out

Stores data for output

Data Out

to Port pins, MCU I/O

output mode

Direction

Configures Port pin as

input or output

Configures Port pins as

either CMOS or Open

Drive Select

Drain on some pins, while

selecting high slew rate

on other pins.

Flash Protection

Read only – Flash Sector

Protection

Secondary Flash

Read only – PSD Security

Protection

and Secondary Flash

Sector Protection

PMMR0

Power Management

PMMR2

Power Management

Page

Page Register

Places PSD memory

areas in Program and/or

Data space on an

individual basis.

Table 7. Register Address Offset

*Other registers that are not part of the I/O ports.

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