PSD813F2 datasheet(13/110 Pages) STMICROELECTRONICS

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PSD813F2, PSD833F2, PSD834F2, PSD853F2, PSD854F2

Note: 1. The pin numbers in this table are for the PLCC package only. See the package information from Table 74., page 102 onwards, for

pin numbers on other package types.

2. These functions can be multiplexed with other functions.

PC7

I/O

PC7 pin of Port C. This port pin can be configured to have the following functions:

MCU I/O – write to or read from a standard output or input port.

CPLD macrocell (McellBC7) output.

Input to the PLDs.

DBE – active Low Data Byte Enable input from 68HC912 type MCUs.

This pin can be configured as a CMOS or Open Drain output.

PD0

I/O

PD0 pin of Port D. This port pin can be configured to have the following functions:

ALE/AS input latches address output from the MCU.

MCU I/O – write or read from a standard output or input port.

Input to the PLDs.

CPLD output (External Chip Select).

PD1

I/O

PD1 pin of Port D. This port pin can be configured to have the following functions:

MCU I/O – write to or read from a standard output or input port.

Input to the PLDs.

CPLD output (External Chip Select).

CLKIN – clock input to the CPLD macrocells, the APD Unit’s Power-down counter, and

the CPLD AND Array.

PD2

I/O

PD2 pin of Port D. This port pin can be configured to have the following functions:

MCU I/O - write to or read from a standard output or input port.

Input to the PLDs.

CPLD output (External Chip Select).

PSD Chip Select Input (CSI). When Low, the MCU can access the PSD memory and I/O.

When High, the PSD memory blocks are disabled to conserve power.

VCC

15, 38

Supply Voltage

GND

1, 16,

Ground pins

Pin Name

Type

Description

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