MD87C51FC-1 데이터 시트보기 (PDF) - Intel
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MD87C51FC-1 Datasheet PDF : 15 Pages
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M87C51FC
DC CHARACTERISTICS (Over Specified Operating Conditions) (Continued)
Symbol
Parameter
Min
Max
Unit
VOH1
IIL
Output High Voltage
(Port 0 in External Bus Mode)
Logical 0 Input Current
(Ports 1 2 and 3)
VCCb0 3
V
VCCb0 7
V
VCCb1 5
V
b75
mA
ILI
Input leakage Current (Port 0)
ITL
Logical 1 to 0 Transition
Current (Ports 1 2 and 3)
g10
mA
b750
mA
RRST
RST Pulldown Resistor
40
225
KX
CIO
Pin Capacitance
10
pF
ICC
Power Supply Current
Running at 12 MHz (Figure 6)
Idle Mode at 12 MHz (Figure 7)
Power Down Mode (Figure 8)
Running at 16 MHz
Idle Mode at 16 MHz
Power Down Mode 16 MHz
40
mA
10
mA
100
mA
45
mA
15
mA
130
mA
Comments
IOH e b200 mA
IOH e b3 2 mA
IOH e b7 0 mA
VIN e 0 45V
0 k VIN k VCC
VIN e 2V
1 MHz 25 C
(Note 3)
NOTES
1 Capacitive loading on Ports 0 and 2 may cause spurious noise pulses to be superimposed on the VOLs of ALE and Ports
1 2 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 pFs the noise pulse on the
ALE signal 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
2 Capacitive loading on Ports 0 and 2 cause the VOH on ALE and PSEN to drop below the 0 9 VCC specification when the
address lines are stabilizing
3 See Figures 6 – 9 for load circuits Minimum VCC for Power Down is 2V
4 Under steady state (non-transient) conditions IOL must be externally limited as follows
Maximum IOL per port pin
10mA
Maximum IOL per 8-bit port
Port 0 26 mA
Ports 1 2 and 3 15 mA
Maximum total IOL for all output pins
71 mA
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
ICC Max at other frequencies is given by
Active Mode
ICC Max e (Osc Freq c 3) a 4
Idle Mode
ICC Max e (Osc Freq c 0 5) a 4
Where Osc Freq is in MHz ICC is in mA
Figure 5 ICC vs Frequency
271114 – 6
271114 – 7
All other pins disconnected
TCLCH e TCHCL e 5 ns
Figure 6 ICC Load Circuits
Active Mode
7
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