Absolute maximum ratings, Dc characteristics, At89s53 – Rainbow Electronics AT89S53 User Manual
Page 25
AT89S53
25
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 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 V
CC
= 4.0V to 6.0V, 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
V
IL1
Input Low-voltage (EA)
-0.5
0.2 V
CC
- 0.3
V
V
IH
Input Hight-voltage
(Except XTAL1, RST)
0.2 V
CC
+ 0.9
V
CC
+ 0.5
V
V
IH1
Input Hight-voltage
(XTAL1, RST)
0.7 V
CC
V
CC
+ 0.5
V
V
OL
Output Low-voltage
(Ports 1,2,3)
I
OL
= 1.6 mA
0.5
V
V
OL1
Output Low-voltage
(Port 0, ALE, PSEN)
I
OL
= 3.2 mA
0.5
V
V
OH
Output Hight-voltage
(Ports 1,2,3, ALE, PSEN)
I
OH
= -60
µA, V
CC
= 5V
± 10%
2.4
V
I
OH
= -25
µA
0.75 V
CC
V
I
OH
= -10
µA
0.9 V
CC
V
V
OH1
Output Hight-voltage
(Port 0 in External Bus Mode)
I
OH
= -800
µA, V
CC
= 5V
± 10%
2.4
V
I
OH
= -300
µA
0.75 V
CC
V
I
OH
= -80
µA
0.9 V
CC
V
I
IL
Logical 0 Input Current (Ports 1,2,3)
V
IN
= 0.45V
-50
µA
I
TL
Logical 1 to 0 Transition Current (Ports 1,2,3)
V
IN
= 2V, V
CC
= 5V
± 10%
-650
µA
I
LI
Input Leakage Current
(Port 0, EA)
0.45 < V
IN
< V
CC
±10
µA
RRST
Reset Pull-down 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
= 6V
100
µA
V
CC
= 3V
40
µA