30
2601C–MICRO–06/08
AT89LS52
Notes:
1. Under steady state (non-transient) conditions, I
OL must be externally limited as follows:
Maximum I
OL 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. Pins are not guaranteed to sink current greater
than the listed test conditions.
2. Minimum V
CC for Power-down is 2V.
25. DC Characteristics
The values shown in this table are valid for T
A = -40°C to 85°C and VCC = 2.7V to 4.0V, unless otherwise noted.
Symbol
Parameter
Condition
Min
Max
Units
V
IL
Input Low Voltage
(Except EA)-0.5
0.7
V
IL1
Input Low Voltage (EA)
-0.5
0.2 V
CC-0.3
V
IH
Input High Voltage
(Except XTAL1, RST)
0.2 V
CC+0.9
V
CC+0.5
V
IH1
Input High Voltage
(XTAL1, RST)
0.7 V
CC
V
CC+0.5
V
OL
I
OL = 0.8 mA
0.45
V
OL1
(Port 0, ALE, PSEN)
I
OL = 1.6 mA
0.45
V
OH
Output High Voltage
(Ports 1,2,3, ALE, PSEN)
I
OH = -60 A, VCC = 5V ± 10%
2.4
V
I
OH = -25 A
0.65 V
CC
V
I
OH = -10 A
0.80 V
CC
V
OH1
Output High Voltage
(Port 0 in External Bus Mode)
I
OH = -800 A, VCC = 5V ± 10%
2.4
V
I
OH = -300 A
0.75 V
CC
V
I
OH = -80 A
0.9 V
CC
V
I
IL
Logical 0 Input Current (Ports 1,2,3)
V
IN = 0.45V
-50
A
I
TL
Logical 1 to 0 Transition Current
(Ports 1,2,3)
V
IN = 2V, VCC = 5V ± 10%
-150
A
I
LI
Input Leakage Current (Port 0, EA)
0.45 < V
IN < VCC
±10
A
RRST
Reset Pulldown Resistor
50
300
K
Ω
C
IO
Pin Capacitance
Test Freq. = 1 MHz, T
A = 25°C
10
pF
I
CC
Power Supply Current
Active Mode, 12 MHz
25
mA
Idle Mode, 12 MHz
6.5
mA
Power-down Mode
V
CC = 4.0V
30
A