AT89C51RC2-3CSCM View Datasheet(PDF) - Atmel Corporation
Part Name
Description
Manufacturer
AT89C51RC2-3CSCM Datasheet PDF : 127 Pages
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AT89C51RB2/RC2
DC Parameters for Low
Voltage
TA = 0°C to +70°C; VSS = 0V; VCC = 2.7V to 3.6V; F = 0to 40 MHz
TA = -40°C to +85°C; VSS = 0V; VCC = 2.7V to 3.6V; F = 0 to 40 MHz
Symbol Parameter
Min
Typ
Max
Unit Test Conditions
VIL
VIH
VIH1
VOL
VOL1
VOH
VOH1
IIL
ILI
ITL
RRST
Input Low Voltage
Input High Voltage except RST, XTAL1
Input High Voltage, RST, XTAL1
Output Low Voltage, ports 1, 2, 3, 4(6)
Output Low Voltage, port 0, ALE, PSEN (6)
Output High Voltage, ports 1, 2, 3, 4
Output High Voltage, port 0, ALE, PSEN
Logical 0 Input Current ports 1, 2, 3, 4
Input Leakage Current for P0 only
Logical 1 to 0 Transition Current, ports 1, 2, 3,
RST Pulldown Resistor
CIO Capacitance of I/O Buffer
-0.5
0.2 VCC + 0.9
0.7 VCC
0.9 VCC
0.9 VCC
50
200 (5)
0.2 VCC - 0.1
VCC + 0.5
VCC + 0.5
0.45
0.45
-50
±10
-650
250
10
V
V
V
V IOL = 0.8 mA(4)
V IOL = 1.6 mA(4)
V IOH = -10 μA
V IOH = -40 μA
μA VIN = 0.45 V
μA 0.45V < VIN < VCC
μA VIN = 2.0V
kΩ
pF
Fc = 3 MHz
TA = 25°C
IPD Power Down Current
10 (5)
50
μA
VCC = 2.7V to
3.6V(3)
ICCOP
ICCIDLE
Power Supply Current on normal mode
Power Supply Current on idle mode
ICCProg Power Supply Current during flash Write / Erase
0.4 x Frequency (MHz) + 5
0.3 x Frequency (MHz) + 5
0.4 x
Frequency
(MHz) +
20
mA VCC = 3.6 V(1)
mA VCC = 3.6 V(2)
mA VCC = 5.5V(8)
Notes:
1. Operating ICC is measured with all output pins disconnected; XTAL1 driven with TCLCH, TCHCL = 5 ns (see Figure 49.), VIL =
VSS + 0.5V,
VIH = VCC - 0.5V; XTAL2 N.C.; EA = RST = Port 0 = VCC. ICC would be slightly higher if a crystal oscillator used (see Figure
46).
2. Idle ICC 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 = VCC; EA = RST = VSS (see Figure 47).
3. Power Down ICC is measured with all output pins disconnected; EA = VSS, PORT 0 = VCC; XTAL2 NC.; RST = VSS (see Fig-
ure 48).
4. Capacitance loading on Ports 0 and 2 may cause spurious noise pulses to be superimposed on the VOLs 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 VOL peak 0.6V. A Schmitt Trigger use is not necessary.
5. Typical are based on a limited number of samples and are not guaranteed. The values listed are at room temperature and
5V.
6. Under steady state (non-transient) conditions, IOL must be externally limited as follows:
Maximum IOL per port pin: 10 mA
Maximum IOL per 8-bit port:
Port 0: 26 mA
Ports 1, 2 and 3: 15 mA
Maximum total IOL for all output pins: 71 mA
4180E–8051–10/06
109
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