8
5.0 DC ELECTRICAL CHARACTERISTICS (Pre/Post-Radiation)*
VDD = 5.0V ±10%; TA = -55°C < TC < +125°C)
Notes:
* Post-radiation performance guaranteed at 25
°C per MIL-STD-883.
1. Under steady state (non-transient) conditions, IOL must be limited externally as follows:
Maximum IOL per port pin:
10mA
Maximum IOL per 8-bit port-
Port 0:
26mA
Ports 1, 2, & 3:
15mA
Maximum total IOL for all output pins:
71mA
If IOL exceeds the test condition, VOL may exceed the related specification. Pins are not guaranteed to sink current greater than the listed test conditions.
2. Capacitive loading on ports 0 and 2 may cause spurious noise pulses to be superimposed on the VOL of ALE and ports 1 and 3. The noise is due to external bus
capacitance discharging into the port 0 and port 2 pins when these pins make 1 to 0 transitions during bus operations. In applications where capacitance loading
exceeds 100 pF, the noise pulse on the ALE may exceed 0.8V. In these cases, it may be desirable to qualify ALE with a schmitt trigger or use an address latch
with a schmitt trigger strobe input.
3. Capacitive loading ports 0 and 2 cause the VOH on ALE and PSEN to drop below the VDD-0.3 specification when the address lines are stabilizing.
4. Capacitance measured for initial qualification or design changes which may affect the value.
SYMBOL
PARAMETER
CONDITION
MINIMUM
MAXIMUM
UNIT
VIL
Low-level Input Voltage
0.8
V
VIH
High-level Input Voltage
(except XTAL, RST)
2.0
V
VIH1
High-level Input Voltage
(XTAL)
3.85
V
VOL
Low-level Output Voltage1
(Ports 1, 2 and 3)
IOL = 100µA
0.3
V
IOL = 1.6mA
0.45
V
IOL = 3.5mA
1.0
V
VOL1
Low-level Output Voltage
1,2
(Port 0, ALE, PSEN, PROG)
IOL = 200µA
0.3
V
IOL = 3.2mA
0.45
V
IOL = 7.0mA
1.0
V
VOH
High-level Output Voltage
3
(Ports 1, 2, and 3
ALE and PSEN)
IOH = -10µA
4.2
V
IOH = -30µA
3.8
V
IOH = -60µA
3.0
V
VOH1
High-level Output Voltage
(Port 0 in External Bus Mode)
IOH = -200µA
4.2
V
IOH = -3.2mA
3.8
V
IOH = -7.0mA
3.0
V
IIL
Logical 0 Input Current
(Ports 1, 2, and 3)
VIN = 0.0V
VCC = 5.5V
-50
-65
µA
IIL
Logical 0 Input Current
(XTAL 1)
VIN = 0.0V
VCC = 5.5V
-65
µA
ILI
Input Leakage Current
(Port 0)
VIN = 0.0V or VCC
VCC = 5.5V
±25
±65
µA
ILI
Input Leakage Current
(XTAL1)
VIN = 0.0V or VCC
VCC = 5.5V
±65
µA
CIO
4
Pin Capacitance
@ 1MHZ, 25
°C
15
pF
IDD
Power Supply Current:
@16MHz
@20 MHz
95
120
mA
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