
31
AT89S8252
0401G–MICRO–3/06
Z
Notes:
1. Under steady state (non-transient) conditions, I
OL must be externally limited as follows:
Maximum IOL per port pin: 10 mA
Maximum I
OL per 8-bit port: Port 0: 26 mA; Ports 1, 2, 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.
2. Minimum V
CC for Power-down is 2V
Absolute Maximum Ratings*
Operating Temperature.................................. -55°C to +125°C
*NOTICE:
Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent dam-
age to the device. This is a stress rating only and
functional operation of the device at these or any
other conditions beyond those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions for extended periods may affect device
reliability.
Storage Temperature ..................................... -65°C to +150°C
Voltage on Any Pin
with Respect to Ground .....................................-1.0V to +7.0V
Maximum Operating Voltage ............................................ 6.6V
DC Output Current...................................................... 15.0 mA
DC Characteristics
The values shown in this table are valid for T
A = -40°C to 85°C and VCC = 5.0V ± 20%, unless otherwise noted.
Symbol
Parameter
Condition
Min
Max
Units
V
IL
Input Low-voltage
(Except EA)
-0.5
0.2 V
CC - 0.1
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
(Ports 1,2,3)
I
OL = 1.6 mA
0.5
V
OL1
(Port 0, ALE, PSEN)
I
OL = 3.2 mA
0.5
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
0.75 V
CC
V
I
OH = -10 A
0.9 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%
-650
A
I
LI
Input Leakage Current
(Port 0, EA)
0.45 < V
IN < VCC
±10
A
RRST
Reset Pull-down Resistor
50
300
K
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 = 6V
100
A
V
CC = 3V
40
A