UPD178018 datasheet(15/56 Pages) NEC

15 / 56 page

µPD178004, 178006, 178016, 178018

5. PERIPHERAL HARDWARE FUNCTION FEATURES

5.1 PORTS

The following 3 types of I/O ports are available.

• CMOS input (P00)

• CMOS input/output (P01 to P06, port 1 to port 5, P64 to P67, port 12) : 54

• N-channel open-drain input/output (P60 to P63)

• N-ch open drain output (Port 13)

Total

: 62

Table 5-1. Port Functions

Input/output port pins. Input/output specifiable bit-wise.

Dedicated input port pins

Port 0

P00

P01 to P06

Input/output port pins. Input/output specifiable bit-wise.

Port 1

P10 to P15

Input/output port pins. Input/output specifiable bit-wise.

Port 3

P30 to P37

Input/output port pins. Input/output specifiable bit-wise.

Port 2

P20 to P27

Port 4

P40 to P47

Input/output port pins. Input/output specifiable in 8-bit units.

Test flag (KRIF) is set to 1 by falling edge detection.

Input/output port pins. Input/output specifiable bit-wise.

Port 5

P50 to P57

N-channel open-drain input/output port pins. Input/output specifiable bit-wise.

LED direct drive capability.

Port 6

P60 to P63

P64 to P67

Port 12

P120 to P125

Input/output port pins. Input/output specifiable bit-wise.

N-ch open drain output port.

Port 13

P132 to P134

Pin Name

Function

Name

UPD178018 Datasheet(PDF) 15 Page - NEC

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