AT89C2051 Atmel Corporation, AT89C2051 Datasheet - Page 12

• Manufacturer Part Number: AT89C2051
• Manufacturer: Atmel Corporation

Specifications of AT89C2051

• Flash (kbytes): 2 Kbytes
• Max. Operating Frequency: 24 MHz
• Cpu: 8051-12C
• Max I/o Pins: 15
• Uart: 1
• Sram (kbytes): 0.125
• Operating Voltage (vcc): 2.7 to 6.0
• Timers: 2

16. Absolute Maximum Ratings*
17. DC Characteristics
T
Notes:
12
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...................................................... 25.0 mA
A
Symbol
V
V
V
V
V
I
I
I
V
V
RRST
C
I
IL
TL
LI
CC
OL
OH
OS
IL
IH
IH1
CM
IO
= -40°C to 85°C, V
1. Under steady state (non-transient) conditions, I
2. Minimum V
AT89C2051
Maximum I
Maximum total I
If I
than the listed test conditions.
OL
Parameter
Input Low-voltage
Input High-voltage
Input High-voltage
Output Low-voltage
(Ports 1, 3)
Output High-voltage
(Ports 1, 3)
Logical 0 Input Current
(Ports 1, 3)
Logical 1 to 0 Transition Current
(Ports 1, 3)
Input Leakage Current
(Port P1.0, P1.1)
Comparator Input Offset Voltage
Comparator Input Common
Mode Voltage
Reset Pull-down Resistor
Pin Capacitance
Power Supply Current
Power-down Mode
exceeds the test condition, V
OL
CC
CC
per port pin: 20 mA
for Power-down is 2V.
= 2.7V to 6.0V (unless otherwise noted)
OL
for all output pins: 80 mA
(2)
(1)
OL
may exceed the related specification. Pins are not guaranteed to sink current greater
Condition
(Except XTAL1, RST)
(XTAL1, RST)
I
I
I
I
I
V
V
0 < V
V
Test Freq. = 1 MHz, T
Active Mode, 12 MHz, V
Idle Mode, 12 MHz, V
P1.0 & P1.1 = 0V or V
V
V
OL
OL
OH
OH
OH
IN
IN
CC
CC
CC
= 20 mA, V
= 10 mA, V
= -80 μA, V
= -30 μA
= -12 μA
= 0.45V
= 2V, V
= 5V
= 6V, P1.0 & P1.1 = 0V or V
= 3V, P1.0 & P1.1 = 0V or V
IN
OL
< V
must be externally limited as follows:
CC
CC
= 5V ± 10%
CC
CC
CC
= 5V
= 2.7V
= 5V ± 10%
*NOTICE:
A
CC
CC
= 25°C
CC
= 6V/3V
= 6V/3V
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.
CC
CC
0.2 V
0.75 V
0.7 V
0.9 V
Min
-0.5
2.4
CC
50
0
+ 0.9
CC
CC
CC
0.2 V
V
V
CC
CC
15/5.5
Max
-750
V
300
100
±10
0.5
-50
5/1
20
10
20
CC
+ 0.5
+ 0.5
CC
0368H–MICRO–6/08
- 0.1
Units
mV
mA
mA
µA
µA
µA
kΩ
pF
µA
µA
V
V
V
V
V
V
V
V