8XC51FX Datasheet, PDF (9/20 Pages) Intel Corporation – CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLERS

8XC51FX
DC CHARACTERISTICS (Over Operating Conditions)
All parameter values apply to all devices unless otherwise indicated (Continued)
Symbol
Parameter
Min
Typical
(Note 4)
Max
Units
I_LI
Input leakage Current (Port 0)
I_TL
Logical 1 to 0 Transition Current
(Ports 1 2 and 3)
Express
Commercial
g 10
mA
b750
b650
mA
RRST
RST Pulldown Resistor
40
225
KX
CIO
Pin Capacitance
10
pF
I_CC
Power Supply Current
Active Mode
At 12 MHz (Figure 5)
At 16 MHz
At 24 MHz
At 33 MHz
Idle Mode
At 12 MHz (Figure 5)
At 16 MHz
At 24 MHz
At 33 MHz
Power Down Mode
15
30
mA
20
38
mA
28
56
mA
35
56
mA
5
75
mA
6
95
mA
7
13 5
mA
7
15
mA
5
75
mA
Test Conditions
V_IN e V_IL or V_IH
V_IN e 2V
1MHz 25 C
(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 Typicals are based on limited number of samples and are not guaranteed The values listed are at room temperature and 5V
5 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
Note
I_CC max at 33 MHz is at 5V g10% V_CC while I_CC max at 24 MHz and below is at 5V g20% V_CC
Figure 5 8XC51FA FB FC I_CC vs Frequency
272322 – 5
9