
525
Section 25 Electrical Characteristics
25.1
HD404344R Series
25.1.1
Absolute Maximum Ratings
Table 25-1 lists the absolute maximum ratings of the HD404344R Series microcomputers.
Table 25-1 Absolute Maximum Ratings (HD404344R Series)
Item
Symbol
Rated Value
Unit
Notes
Power supply voltage
V
CC
–0.3 to +7.0
V
Programming voltage
V
PP
–0.3 to +14.0
V
1
Pin voltage
V
T
–0.3 to V
CC + 0.3
V
2
Allowable total input current
(current flowing in to the LSI)
∑I
0
100
mA
3
Allowable total output current
(current flowing out from the LSI)
–
∑I
0
30
mA
4
Allowable input current
I
0
30
mA
5, 6
(current flowing in to the LSI)
4
mA
5, 7
Allowable output current
(current flowing out from the LSI)
–I
0
4mA
8
Operating temperature
T
opr
–20 to +75
°C
Storage temperature
T
stg
–55 to +125
°C
Notes: 1. Applies to the HD4074344 TEST (V
PP) pin.
2. Applies to D
0 to D5, R0, R1, R2, and R3.
3. The allowable total input current is the sum of the currents flowing from all the I/O pins
to ground at the same time.
4. The allowable total output current is the sum of the currents flowing from V
CC to all the
I/O pins at the same time.
5. The allowable input current is the maximum value of the currents flowing from each I/O
pin to ground.
6. Applies to D
1, D2, R1, and R2.
7. Applies to D
0, D3 to D5, R0, and R3.
8. The allowable output current is the maximum value of the currents flowing from V
CC to
each I/O pin.
Use of this LSI at levels that exceed the absolute maximum ratings can permanently
damage the LSI. Also note that it is desirable to use this LSI within the conditions
specified in the “Electrical Characteristics” section during normal operation. Exceeding
those conditions can cause the LSI to operate incorrectly and may adversely affect LSI
reliability.
All voltage values are referenced to ground.