UPD70741GC-25-8EU Просмотр технического описания (PDF) - NEC => Renesas Technology

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UPD70741GC-25-8EU

V821™ 32-/16-BIT MICROPROCESSOR

NEC => Renesas Technology 

µPD70741

1.3 Pin I/O Circuits and Processing of Unused Pins

Table 1-1 shows the I/O circuit type of each pin and the processing for unused pins. Figure 1-1 shows the I/O

circuit of each type.

Table 1-1. I/O Circuits Type of Each Pin and Recommended Connection of Unused Pins

Pin

P00/TCLR

P01/DREQ0

P02/DACK0

P03/DREQ1

P04/DACK1

P05/SI

P06/SO

P07/SCLK

P08/TXD/UBE

P09/RXD/TC

D0-D15

A0-A7, A16-A18

A8-A15, A19-A23

READY

HLDRQ

HLDAK

BLOCK/WDTOUT

MRD

LMWR/WE

UMWR

IORD

IOWR

CLKOUT

CS0/REFRQ

CS1-CS3

INTP00/TO00

INTP01

INTP02/TO01

INTP03

INTP10-INTP12

INTP13/TI

NMI

RESET

RAS

LCAS

UCAS

X2

IC

I/O circuit type

5

Recommended connection

Input status: Individually connected to VDD or GND through a resistor.

Output status: Open

5

Open

4

Open

1

Connected to GND through a resistor.

Connected to VDD through a resistor.

4

Open

8

Connected to VDD through a resistor.

2

Connected to VDD through a resistor.

8

Connected to VDD through a resistor.

2

Connected to VDD through a resistor.

4

Open

-

-

Connected to GND through a resistor.

10

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