T80C5112-RKSCL datasheet(78/97 Pages) ATMEL

78 / 97 page

Rev. B - November 10, 2000

Preliminary

T80C5112

18. Electrical Characteristics

18.1. Absolute Maximum Ratings (1)

Ambiant Temperature Under Bias:

C = commercial 0

°Cto70°C

I = industrial -40

°Cto85°C

Storage Temperature -65

°Cto+150°C

Voltage on VCC to VSS-0.5Vto+7V

Voltage on VPP to VSS-0.5Vto+13V

Voltage on Any Pin to VSS-0.5VtoVCC + 0.5 V

Power Dissipation1 W(2)

NOTES

Stresses at or above those listed under “ Absolute 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.

This value is based on the maximum allowable die temperature and the thermal resistance of the package.

18.2. Power consumption measurement

Since the introduction of the first C51 devices, every manufacturer made operating Icc measurements under reset,

which made sense for the designs were the CPU was running under reset. In our 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. ThatÕs why, while keeping measurements under Reset, we present 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, 3, 4 are disconnected, RST = Vcc, XTAL2 is not connected and XTAL1 is driven by the clock.

This is much more representative of the real operating Icc.

T80C5112-RKSCL 数据表(PDF) 78 Page - ATMEL Corporation