AT80C51RA2-RLSIV datasheet(58/86 Pages) ATMEL

58 / 86 page

4188F–8051–01/08

AT/TS8xC51Rx2

11. Electrical Characteristics

11.1

Absolute Maximum Ratings

11.2

Power Consumption Measurement

Since the introduction of the first C51 devices, every manufacturer made operating Icc measure-

ments under reset, which made sense for the designs were the CPU was running under reset. In

Atmel new devices, the CPU is no more active during reset, so the power consumption is very

low but is not really representative of what will happen in the customer system. That’s why, while

keeping measurements under Reset, Atmel presents a new way to measure the operating Icc:

Using an internal test ROM, the following code is executed:

Label:

SJMP Label (80 FE)

Ports 1, 2, 3 are disconnected, Port 0 is tied to FFh, EA = Vcc, RST = Vss, XTAL2 is not con-

nected and XTAL1 is driven by the clock.

This is much more representative of the real operating Icc.

11.3

DC Parameters for Standard Voltage

TA = 0°C to +70°C; VSS = 0 V; VCC = 5 V ± 10%; F = 0 to 40 MHz.

TA = -40°C to +85°C; VSS = 0 V; VCC = 5 V ± 10%; F = 0 to 40 MHz.

Ambiant Temperature Under Bias:

C = commercial......................................................0°C to 70°C

I = industrial ........................................................-40°C to 85°C

Storage Temperature .................................... -65°C to + 150°C

Voltage on VCC to VSS ........................................-0.5 V to + 7 V

Voltage on Any Pin to VSS........................-0.5 V to VCC + 0.5 V

Power Dissipation .............................................................. 1 W

*NOTICE:

Stresses at or above those listed under “ Abso-

lute Maximum Ratings” may cause permanent

damage to the device. This is a stress rating only

and functional operation of the device at these or

any other conditions above those indicated in the

operational sections of this specification is not

implied. Exposure to absolute maximum rating

conditions may affect device reliability.

Power dissipation is based on the maximum

allowable die temperature and the thermal resis-

tance of the package.

Table 11-1.

DC Parameters in Standard Voltage

Symbol

Parameter

Min

Typ

Max

Unit

Test Conditions

VIL

Input Low Voltage

-0.5

0.2 VCC - 0.1

VIH

Input High Voltage except XTAL1, RST

0.2 VCC + 0.9

VCC + 0.5

VIH1

Input High Voltage, XTAL1, RST

0.7 VCC

VCC + 0.5

VOL

Output Low Voltage, ports 1, 2, 3, 4, 5(6)

0.3

0.45

1.0

IOL = 100 µA(4)

IOL = 1.6 mA(4)

IOL = 3.5 mA(4)

VOL1

Output Low Voltage, port 0 (6)

0.3

0.45

1.0

IOL = 200 µA(4)

IOL = 3.2 mA(4)

IOL = 7.0 mA(4)

VOL2

Output Low Voltage, ALE, PSEN

0.3

0.45

1.0

IOL = 100 µA(4)

IOL = 1.6 mA(4)

IOL = 3.5 mA(4)

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