| 摘要 |
<p>PURPOSE: To provide a PC card easily operatable at a low voltage from the first in the PC card operatable in both standard voltage and low voltage. CONSTITUTION: The memory space of an attribute memory 4 for storing attribute information is divided into a first area 40b and a second area 40a, the level of a power supply voltage supplied from a system equipment is detected by a power supply voltage detection circuit 17, and depending on whether it is the standard voltage or the low voltage, the signal VS of an 'H' level or an 'L' level is outputted to the attribute memory 4. Thus, the first area 40b or the second area 40a of the attribute memory 4 is selected and accessed.</p> |
