AT89S53
Absolute Maximum Ratings*
*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.
Operating Temperature.................................. -55°C to +125°C
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 TA = -40°C to 85°C and VCC = 4.0V to 6.0V, unless otherwise noted
Symbol Parameter
Condition
Min
-0.5
Max
Units
VIL
Input Low-voltage
(Except EA)
0.2 VCC - 0.1
0.2 VCC - 0.3
VCC + 0.5
V
V
V
V
VIL1
VIH
Input Low-voltage (EA)
Input Hight-voltage
Input Hight-voltage
-0.5
(Except XTAL1, RST)
(XTAL1, RST)
0.2 VCC + 0.9
0.7 VCC
VIH1
VCC + 0.5
Output Low-voltage (1)
(Ports 1,2,3)
VOL
IOL = 1.6 mA
IOL = 3.2 mA
0.5
0.5
V
V
Output Low-voltage (1)
(Port 0, ALE, PSEN)
VOL1
I
I
OH = -60 µA, VCC = 5V 10%
OH = -25 µA
2.4
V
V
Output Hight-voltage
(Ports 1,2,3, ALE, PSEN)
VOH
0.75 VCC
0.9 VCC
2.4
IOH = -10 µA
V
IOH = -800 µA, VCC = 5V 10%
V
Output Hight-voltage
(Port 0 in External Bus Mode)
VOH1
I
OH = -300 µA
0.75 VCC
0.9 VCC
V
IOH = -80 µA
V
IIL
Logical 0 Input Current (Ports 1,2,3)
VIN = 0.45V
-50
µA
µA
ITL
Logical 1 to 0 Transition Current (Ports 1,2,3) VIN = 2V, VCC = 5V 10%
-650
Input Leakage Current
0.45 < VIN < VCC
(Port 0, EA)
ILI
10
µA
RRST
CIO
Reset Pull-down Resistor
50
300
10
KΩ
pF
Pin Capacitance
Test Freq. = 1 MHz, TA = 25°C
Active Mode, 12 MHz
Idle Mode, 12 MHz
VCC = 6V
25
mA
mA
µA
µA
Power Supply Current
6.5
100
40
ICC
Power-down Mode (2)
VCC = 3V
Notes: 1. Under steady state (non-transient) conditions, IOL
must be externally limited as follows:
Maximum IOL per port pin: 10 mA
Maximum IOL per 8-bit port:
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 VCC for Power-down is 2V.
Port 0: 26 mA
Ports 1,2, 3: 15 mA
25
ATMEL [ ATMEL ]
