IC80C51
IC80C31
DC CHARACTERISTICS
(Ta=0°C to 70 °C; VCC=5V+10ꢀ; VSS=0V )
Symbol
Parameter
Test conditions
Min
Max
Unit
VIL
VIL1
VIH
Input low voltage (All except EA)
Input low voltage (EA)
–0.5
–0.5
0.2Vcc – 0.1
0.2Vcc – 0.3
Vcc + 0.5
V
V
V
Input high voltage
0.2Vcc + 0.9
(All except XTAL 1, RST)
VIH1
Input high voltage (XTAL 1)
0.7Vcc
0.7Vcc
Vcc + 0.5
Vcc + 0.5
V
V
VSCH+
RST positive schmitt-trigger
threshold voltage
VSCH–
RST negative schmitt-trigger
threshold voltage
0
0.2Vcc
V
(1)
VOL
Output low voltage
(Ports 1, 2, 3)
Iol = 100 µA
IOL = 1.6 mA
IOL = 3.5 mA
IOL = 200 µA
IOL = 3.2 mA
IOL = 7.0 mA
—
—
0.3
0.45
1.0
V
V
V
V
V
V
V
—
VOL1(1)
VOH
Output low voltage
—
0.3
(Port 0, ALE, PSEN)
—
0.45
1.0
—
Output high voltage
IOH = –10 µA
0.9Vcc
—
(Ports 1, 2, 3, ALE, PSEN)
Vcc = 4.5V-5.5V
IOL = –25 µA
IOL = –60 µA
0.75Vcc
2.4
—
—
—
V
V
V
VOH1
Output high voltage
IOH = –80 µA
0.9Vcc
(Port 0, ALE, PSEN)
Vcc = 4.5V-5.5V
IOH = –300 µA
IOH = –800 µA
0.75Vcc
2.4
—
—
V
V
IIL
ILI
Logical 0 input current (Ports 1, 2, 3) VIN = 0.45V
—
–110
+10
–650
µA
µA
µA
Input leakage current (Port 0)
0.45V < VIN < Vcc
VIN = 2.0V
–10
—
ITL
Logical 1-to-0 transition current
(Ports 1, 2, 3)
RRST
RST pulldown resister
50
300
KΩ
Note:
1. Under steady state (non-transient) conditions, IOL must be externally limited as follows:
Maximum IOL per port pin: 10 mA
Maximum IOL per 8-bit port
Port 0: 26 mA
Ports 1, 2, 3: 15 mA
Maximum total IOL for all output pins: 71 mA
If IOL exceeds the test condition, VOL may exceed the related specification.
Integrated Circuit Solution Inc.
MC001-0B
37
ICSI [ INTEGRATED CIRCUIT SOLUTION INC ]
