7 characteristics of i/o ports – Renesas Single-Chip Microcomputer M34551T2-MCU User Manual
Page 33

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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
Ω
70
Ω
Max.
-
-
0.5 V
1.35 V
250
µ
A
40 mA
0.4 V
0.7 V
-
130
Ω
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
Ω
200
Ω
V
I/O
=Vcc to GND
I
I/O
≤
1 mA
10
Ω
-
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
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