PSD913F2 datasheet(16/94 Pages) STMICROELECTRONICS

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PSD9XX Family

Preliminary Information

Table 5.

PSD9XX

Descriptions

(cont.)

Pin Name

Pin*

Type

Description

(PLCC)

PC2

I/O

PC2 pin of Port C. This port pin can be configured to have

the following functions:

1. MCU I/O — write to or read from a standard output or

input port.

2. Input to the PLDs.

3. Vstby — SRAM standby voltage input for SRAM battery

backup.

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

PC3

I/O

PC3 pin of Port C. This port pin can be configured to have

the following functions:

1. MCU I/O — write to or read from a standard output or

input port.

2. Input to the PLDs.

3. TSTAT output for the JTAG interface.

4. Rdy/Bsy output for in-system parallel programming.

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

PC4

I/O

PC4 pin of Port C. This port pin can be configured to have

the following functions:

1. MCU I/O — write to or read from a standard output or

input port.

2. Input to the PLDs.

3. TERR output for the JTAG interface.

4. Vbaton — battery backup indicator output. Goes high

when power is being drawn from an external battery.

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

PC5

I/O

PC5 pin of Port C. This port pin can be configured to have

the following functions:

1. MCU I/O — write to or read from a standard output or

input port.

2. Input to the PLDs.

3. TDI input for the JTAG interface.

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

PC6

I/O

PC6 pin of Port C. This port pin can be configured to have

the following functions:

1. MCU I/O — write to or read from a standard output or

input port.

2. Input to the PLDs.

3. TDO output for the JTAG interface.

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

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