Atmel AT89C52 User Manual

D.C. Characteristics
The values shown in this table are valid for T
A
= -40°C to 85°C and V
CC
= 5.0 V ± 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
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, V
CC
= 5 V ± 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, V
CC
= 5 V ± 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
= 0.45 V -50 µA
I
TL
Logical 1 to 0 Transition
Current (Ports 1,2,3)
V
IN
= 2 V -650 µA
I
LI
Input Leakage Current
(Port 0,
EA)
0.45 < V
IN
< V
CC
±10 µA
RRST Reset Pulldown Resistor 50 300 KΩ
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
(2)
V
CC
= 6 V 100 µA
V
CC
= 3 V 40 µA
Operating Temperature................... -55°C to +125°C
Storage Temperature......................-65°C to +150°C
Voltage on Any Pin
with Respect to Ground ................... -1.0 V to +7.0 V
Maximum Operating Voltage ............................ 6.6 V
DC Output Current.......................................15.0 mA
*NOTICE: Stresses beyond those listed under “Absolute Maxi-
mum Ratings” may cause permanent damage to the device.
This is a stress rating only and functional operation of the
device at these or any other conditions beyond those indi-
cated in the operational sections of this specification is not
implied. Exposure to absolute maximum rating conditions
for extended periods may affect device reliability.
Absolute Maximum Ratings*
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 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 2 V.
16 AT89C52

Atmel AT89C52 Specifications

General

Brand	Atmel
Model	AT89C52
Category	Microcontrollers
Language	English