AT83C51RB2-3CSCM View Datasheet(PDF) - Atmel Corporation
Part Name
Description
Manufacturer
AT83C51RB2-3CSCM Datasheet PDF : 83 Pages
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DC Parameters for Low
Voltage
TA = 0°C to +70°C; VSS = 0V; VCC = 2.7V to 3.6V; F = 10 to 40 MHz
TA = -40°C to +85°C; VSS = 0V; VCC = 2.7V to 3.6V; F = 10 to 40 MHz
Symbol Parameter
Min
Typ
Max
Unit Test Conditions
VIL
VIH
VIH1
VOL
VOL1
VOH
VOH1
IIL
ILI
ITL
RRST
CIO
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
Logical 1 to 0 Transition Current, ports 1, 2, 3,
RST Pulldown Resistor
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 = 0.45V
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 Power Supply Current on normal mode
0.31 x Frequency (MHz) + 4 mA VCC = 3.6V(1)
ICCIDLE Power Supply Current on idle mode
0.2 x Frequency (MHz) + 4 mA VCC = 3.6V(2)
Notes:
1. Operating ICC is measured with all output pins disconnected; XTAL1 driven with TCLCH, TCHCL = 5 ns (see Figure 26.),
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
23).
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 24).
3. Power-down ICC is measured with all output pins disconnected; EA = VSS, PORT 0 = VCC; XTAL2 NC.; RST = VSS (see Fig-
ure 25).
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
If IOL exceeds the test condition, VOL may exceed the related specification. Pins are not guaranteed to sink current greater
than the listed test conditions.
7. For other values, please contact your sales office.
68 AT80C51RD2/AT83C51Rx2
4113B–8051–03/05
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