Datasheet

168
AT89C51CC03
4182O–CAN–09/08
Electrical Characteristics
Absolute Maximum Ratings
ICCOP Test Conditions
Power Consumption
Management
Since the introduction of the first C51 device, every manufacturer made operating I
CC
measurements under Reset, which made sense for the designs where the CPU was
running under reset. In our new devices, the CPU is no longer active during reset, so the
power consumption is very low but not representative of what will happen in the cus-
tomer system. Thus, while keeping measurements under Reset, we present a new way
to measure the operating I
CC
.
Using an internal test ROM, the following code is executed.
Label: SJMP Label (80FE)
Ports 1 and 4 are disconnected, RST = Vcc, XTAL2 is not connected and XTAL1 is
driven by the clock.
This is much more representative of the real operating Icc.
DC Parameters for Standard Voltage
Industrial T
A
= -40°C to +85°C; V
SS
= 0V;
Automotive T
A
= -40°C to +125°C; V
SS
= 0V
V
CC
=3.0V to 5.5V and F = 0 to 40 MHz (both internal and external code execution)
V
CC
=4.5V to 5.5V and F = 0 to 60 MHz (internal code execution only)
Ambiant Temperature Under Bias:
I = industrial........................................................-40°C to 85°C
A = automotive..................................................-40°C to +125°C
Voltage on V
CC
from V
SS
......................................-0.5V to + 6V
Voltage on Any Pin from V
SS
..................... -0.5V to V
CC
+ 0.2V
Power Dissipation .............................................................. 1 W
Table 116. DC Parameters in Standard Voltage
Symbol Parameter Min Typ
(5)
Max Unit Test Conditions
V
IL
Input Low Voltage -0.5 0.2Vcc - 0.1 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, ports 1, 2, 3 and 4
(6)
0.3
0.45
1.0
V
V
V
I
OL
= 100 μA
(4)
I
OL
= 1.6 mA
(4)
I
OL
= 3.5 mA
(4)
V
OL1
Output Low Voltage, port 0, ALE, PSEN
(6)
0.3
0.45
1.0
V
V
V
I
OL
= 200 μA
(4)
I
OL
= 3.2 mA
(4)
I
OL
= 7.0 mA
(4)
Note: Stresses at or above those listed under “Absolute Maximum
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 above those indicated in
the operational sections of this specification is not implied.
Exposure to absolute maximum rating conditions may affect
device reliability.
The power dissipation is based on the maximum allowable
die temperature and the thermal resistance of the package.