8XL52 Datasheet, PDF (9/20 Pages) Intel Corporation – LOW VOLTAGE CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLERS

8XL52 54 58
DC CHARACTERISTICS (Over Operating Conditions)
All parameter values apply to all devices unless otherwise indicated (Continued)
Symbol
Parameter
Min
Max
Units
I_TL
Logical 1 to 0
Transition Current
(Ports 1 2 and 3)
b₃₅₀
mA
RRST
RST Pulldown Resistor
40
225
KX
I_CC
Power Supply Current
Active Mode at 16 MHz
Idle Mode at 16 MHz
Power-Down Mode
25
mA
8
mA
30
mA
Test Conditions
V_IN ^e 1 4V
(Note 3)
NOTES
1 Capacitive loading on Ports 0 and 2 may cause noise pulses above 0 4V to be superimposed on the V_OLs 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
change from 1 to 0 In applications where capacitance loading exceeds 100 pF the noise pulses on these signals may
exceed 0 8V It may be desirable to qualify ALE or other signals with a Schmitt Trigger or CMOS-level input logic
2 Capacitive loading on Ports 0 and 2 cause the V_OH on ALE and PSEN to drop below the 0 9 V_CC specification when the
address lines are stabilizing
3 See Figures 6 – 9 for test conditions Minimum V_CC for power down is 2V
4 Under steady state (non-transient) conditions I_OL must be externally limited as follows
Maximum I_OL per port pin
10 mA
Maximum I_OL per 8-bit port -
Port 0 26 mA
Ports 1 2 and 3 15 mA
Maximum total I_OL for all output pins
71 mA
If I_OL exceeds the test condition V_OL may exceed the related specification Pins are not guaranteed to sink current greater
than the listed test conditions
Running the device with EA at a higher voltage than V_CC sinks additional currrent
I_CC Max at other frequencies (3 5 MHz to 20 MHz) is given by
Active Mode
I_CC MAX e 1 1 c FREQ a 7 6
Idle Mode
I_CC MAX e 0 4 c FREQ a 1 8
Where FREQ is in MHz I_CCMAX is given in mA
Figure 5 I_CC vs Frequency
272468 – 6
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