AT89LS51 Atmel Corporation, AT89LS51 Datasheet - Page 22

• Manufacturer Part Number: AT89LS51
• Manufacturer: Atmel Corporation

Specifications of AT89LS51

• Flash (kbytes): 4 Kbytes
• Max. Operating Frequency: 16 MHz
• Cpu: 8051-12C
• Max I/o Pins: 32
• Uart: 1
• Sram (kbytes): 0.125
• Operating Voltage (vcc): 2.7 to 4.0
• Timers: 2
• Isp: SPI
• Watchdog: Yes

22. DC Characteristics
The values shown in this table are valid for T
Notes:
22
Symbol
V
V
V
V
V
V
V
V
I
I
I
RRST
C
I
IL
TL
LI
CC
OL
OL1
OH
OH1
IL
IL1
IH
IH1
IO
1. Under steady state (non-transient) conditions, I
2. Minimum V
AT89LS51
Maximum I
Maximum I
Port 0: 26 mA
Maximum total I
If I
than the listed test conditions.
OL
Parameter
Input Low Voltage
Input Low Voltage (EA)
Input High Voltage
Input High Voltage
Output Low Voltage
1,2,3)
Output Low Voltage
(Port 0, ALE, PSEN)
Output High Voltage
(Ports 1,2,3, ALE, PSEN)
Output High Voltage
(Port 0 in External Bus Mode)
Logical 0 Input Current (Ports
1,2,3)
Logical 1 to 0 Transition Current
(Ports 1,2,3)
Input Leakage Current (Port 0,
EA)
Reset Pulldown Resistor
Pin Capacitance
Power Supply Current
Power-down Mode
exceeds the test condition, V
OL
OL
CC
per port pin: 10 mA
per 8-bit port:
for Power-down is 2V.
OL
for all output pins: 71 mA
Ports 1, 2, 3: 15 mA
(2)
(1)
(1)
(Ports
OL
A
may exceed the related specification. Pins are not guaranteed to sink current greater
= -40°C to 85°C and V
Condition
(Except EA)
(Except XTAL1, RST)
(XTAL1, RST)
I
I
I
I
I
I
I
I
V
V
0.45 < V
Test Freq. = 1 MHz, T
Active Mode, 12 MHz
Idle Mode, 12 MHz
V
OL
OL
OH
OH
OH
OH
OH
OH
IN
IN
CC
= 0.8 mA
= 1.6 mA
= -60 µA
= -25 µA
= -10 µA
= -800 µA
= -300 µA
= -80 µA
= 0.45V
= 2V
= 4.0V
OL
IN
must be externally limited as follows:
< V
CC
A
= 25°C
CC
= 2.7V to 4.0V, unless otherwise noted.
0.2 V
0.65 V
0.80 V
0.75 V
0.7 V
0.9 V
Min
-0.5
-0.5
2.4
2.4
50
CC
CC
CC
+0.9
CC
CC
CC
0.2 V
V
V
CC
CC
-150
Max
0.45
0.45
300
-50
±10
0.7
6.5
10
25
30
CC
+0.5
+0.5
-0.3
3053C–MICRO–6/08
Units
mA
mA
KΩ
µA
µA
µA
pF
µA
V
V
V
V
V
V
V
V
V
V
V
V