169
AT89C51CC03
4182O–CAN–09/08
Notes:
1. Operating ICC is measured with all output pins disconnected; XTAL1 driven with TCLCH, TCHCL = 5 ns (see Figure 81.), VIL = V
SS + 0.5V,
V
IH = VCC - 0.5V; XTAL2 N.C.; EA = RST = Port 0 = VCC. ICC would be slightly higher if a crystal oscillator used (see Figure 2. Idle I
CC is measured with all output pins disconnected; XTAL1 driven with TCLCH, TCHCL = 5 ns, VIL = VSS + 0.5V, VIH = VCC -
0.5V; XTAL2 N.C; Port 0 = V
3. Power-down ICC is measured with all output pins disconnected; EA = VCC, PORT 0 = VCC; XTAL2 NC.; RST = VSS (see Fig- ure 80.). In addition, the WDT must be inactive and the POF flag must be set.
4. Capacitance loading on Ports 0 and 2 may cause spurious noise pulses to be superimposed on the V
OLs of ALE and Ports 1
and 3. The noise is due to external bus capacitance discharging into the Port 0 and Port 2 pins when these pins make 1 to 0
transitions during bus operation. In the worst cases (capacitive loading 100pF), the noise pulse on the ALE line may exceed
0.45V with maxi V
OL peak 0.6V. A Schmitt Trigger use is not necessary.
5. Typicals are based on a limited number of samples and are not guaranteed. The values listed are at room temperature.
6. Under steady state (non-transient) conditions, I
OL must be externally limited as follows:
Maximum I
OL per port pin: 10 mA
Maximum IOL per 8-bit port:
Port 0: 26 mA
Ports 1, 2, 3 and 4: 15 mA
Maximum total IOL for all output pins: 71 mA
If I
OL exceeds the test condition, VOL may exceed the related specification. Pins are not guaranteed to sink current greater
than the listed test conditions.
VOH
Output High Voltage, ports 1, 2, 3, and 4
VCC - 0.3
VCC - 0.7
VCC - 1.5
V
IOH = -10 μA
IOH = -30 μA
IOH = -60 μA
VCC = 3V to 5.5V
VOH1
Output High Voltage, port 0, ALE, PSEN
VCC - 0.3
VCC - 0.7
VCC - 1.5
V
IOH = -200 μA
IOH = -3.2 mA
IOH = -7.0 mA
VCC = 5V ± 10%
RRST
RST Pulldown Resistor
20
100
200
k
Ω
IIL
Logical 0 Input Current ports 1, 2, 3 and 4
-50
μA
Vin = 0.45V
ILI
Input Leakage Current
±10
μA
0.45V < Vin < VCC
I
TL
Logical 1 to 0 Transition Current, ports 1, 2, 3
and 4
-650
μA
Vin = 2.0V
CIO
Capacitance of I/O Buffer
10
pF
Fc = 1 MHz
TA = 25
°C
I
PD
Power-down Current Industrial
75
150
μA3V < V
CC < 5.5V
(3)
Power-down Current Automotive
100
350
μA3V < V
CC < 5.5V
(3)
I
CC
Power Supply Current
I
CCOP = 0.4 Frequency (MHz) + 8
I
CCIDLE = 0.2 Frequency (MHz) + 8
mA
Vcc = 5.5V(1)(2)
ICCWRITE
Power Supply Current on flash or EEdata write
0.8 x
Frequency
(MHz) + 15
mA
VCC = 5.5V
Table 116. DC Parameters in Standard Voltage (Continued)
Symbol
Parameter
Min
Typ
(5)
Max
Unit
Test Conditions