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AT89S52-24PU Datasheet(PDF) 29 Page - ATMEL Corporation

Part No. AT89S52-24PU
Description  8-bit Microcontroller with 8K Bytes In-System Programmable Flash
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Maker  ATMEL [ATMEL Corporation]
Homepage  http://www.atmel.com
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 29 page
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29
1919D–MICRO–6/08
AT89S52
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 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.
26. 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
27. DC Characteristics
The values shown in this table are valid for T
A = -40°C to 85°C and VCC = 4.0V to 5.5V, 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 High Voltage
(Except XTAL1, RST)
0.2 V
CC+0.9
V
CC+0.5
V
V
IH1
Input High Voltage
(XTAL1, RST)
0.7 V
CC
V
CC+0.5
V
V
OL
Output Low Voltage(1) (Ports 1,2,3)
I
OL = 1.6 mA
0.45
V
V
OL1
Output Low Voltage(1)
(Port 0, ALE, PSEN)
I
OL = 3.2 mA
0.45
V
V
OH
Output High Voltage
(Ports 1,2,3, ALE, PSEN)
I
OH = -60 µA, VCC = 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 High Voltage
(Port 0 in External Bus Mode)
I
OH = -800 µA, VCC = 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, VCC = 5V ± 10%
-300
µA
I
LI
Input Leakage Current (Port 0, EA)
0.45 < V
IN < VCC
±10
µA
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
(1)
V
CC = 5.5V
50
µA




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