UPD78044F datasheet(14/52 Pages) NEC

14 / 52 page

µPD780232

Data Sheet U13415EJ2V0DS

5. PERIPHERAL HARDWARE FUNCTION FEATURES

5.1 Port

There are three kinds of I/O ports.

• CMOS I/O (ports 0, 2):

• P-ch open-drain output (ports 3, 4): 16

• P-ch open-drain I/O (ports 5, 6):

Total:

Table 5-1. Port Functions

Name

Pin Name

Function

Port 0

P00 to P02

I/O port. Input/output can be specified in 1-bit units.

When used as an input port, an on-chip resistor can be specified by software.

Port 2

P20 to P27

I/O port. Input/output can be specified in 1-bit units.

When used as an input port, an on-chip resistor can be specified by software.

Port 3

P30 to P37

P-ch open-drain high-tolerance output port.

A pull-down resistor can be incorporated in 1-bit units to VLOAD by a mask option.

Port 4

P40 to P47

P-ch open-drain high-tolerance output port.

A pull-down resistor can be incorporated in 1-bit units to VLOAD by a mask option.

Port 5

P50 to P57

P-ch open-drain high-tolerance I/O port. Input/output can be specified in 1-bit units.

A pull-down resistor can be incorporated in 1-bit units by a mask option (Connection to VLOAD or

VSS0 can be specified in 1-bit units ).

Port 6

P60 to P64

P-ch open-drain high-tolerance I/O port. Input/output can be specified in 1-bit units.

A pull-down resistor can be incorporated in 1-bit units by a mask option (Connection to VLOAD or

VSS0 can be specified in 1-bit units).

UPD78044F Datasheet(PDF) 14 Page - NEC