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7 characteristics of i/o ports – Renesas Single-Chip Microcomputer M34551T2-MCU User Manual

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6.7 Characteristics of I/O Ports

Characteristics of Ports P0, P1, P2, D

0

to D

7

of the M34551T2-MCU differ from those of actual MCU,

because the M34551T2-MCU have emulation circuit. Table 6.3 shows characteristics of the
emulation ports.

Table 6.3 Characteristics of emulation ports

Port

I/O

P0, P1

D

5

- D

0

Input/

Output

Device

74HC4066

Item

Voltage

Vcc=2.0 V

Vcc=4.5 V

Vcc=2.0 V

Vcc=4.5 V

Min.

1.5 V

3.15 V

-

-

-

-

-

-

160

70

Max.

-

-

0.5 V

1.35 V

250

µ

A

40 mA

0.4 V

0.7 V

-

130

Remarks

V

OH

=MAX

I

OL

=16 mA

I

OL

=MAX

V

I/O

=Vcc to GND

I

I/O

1 mA

V

I/O

=Vcc or GND

I

I/O

1 mA

96

200

V

I/O

=Vcc to GND

I

I/O

1 mA

10

-

1.5 V

3.15 V

-

-

-

-

-

-

-

-

0.5 V

1.35 V

250

µ

A

40 mA

0.4 V

0.7 V

V

OH

=MAX

I

OL

=16 mA

I

OL

=MAX

Vcc=4.75 V

Vcc=2.0 V

Vcc=4.5 V

Vcc=4.5 V

Vcc=2.0 V

Vcc=4.5 V

Vcc=2.0 V

Vcc=4.5 V

Vcc=4.75 V

V

IH

V

IL

I

OH

I

OL

V

OL

R

ON

R

ON

V

IH

V

IL

I

OH

I

OL

V

OL

Output

74LS06

D

5

Input

74HC541

P2

Output

Input

74HC541

74LS06