HD404849 Datasheet, PDF (113/125 Pages) Hitachi Semiconductor – 4-Bit Single-Chip Microcomputer

HD404849 Series
Absolute Maximum Ratings
Item
Symbol
Value
Unit
Notes
Supply voltage
V_CC
Programming voltage
V_PP
Pin voltage
V_T
Total permissible input current
∑I_o
Total permissible output current –∑I_o
Maximum input current
I_o
–0.3 to +7.0
–0.3 to +14.0
–0.3 to V_CC + 0.3
100
50
4
30
V
V
1
V
mA
2
mA
3
mA
4, 5
mA
4, 6
Maximum output current
–I_o
4
mA
7, 8
Operating temperature
T_opr
–20 to +75
°C
Storage temperature
T_stg
–55 to +125
°C
Notes: Permanent damage may occur if these absolute maximum ratings are exceeded. Normal operation
must be under the conditions stated in the electrical characteristics tables. If these conditions are
exceeded, the LSI may malfunction or its reliability may be affected.
1. Applies to D₁₁ (V_PP) of the HD4074849.
2. The total permissible input current is the total of input currents simultaneously flowing in from all
the I/O pins to ground.
3. The total permissible output current is the total of output currents simultaneously flowing out from
V_CC to all I/O pins.
4. The maximum input current is the maximum current flowing from each I/O pin to ground.
5. Applies to R0–R3, R6, and R7.
6. Applies to D₀–D₈.
7. The maximum output current is the maximum current flowing out from V_CC to each I/O pin.
8. Applies to D₀–D₈, R0–3, R6, and R7.
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