AMC010CFLKA datasheet(39/42 Pages) AMD

39 / 42 page

5/4/98

AmC0XXCFLKA

CARD INFORMATION STRUCTURE

The “C” series card contains a separate 512 byte

EEPROM memory for the Card Information Structure

(CIS).

All or part of the 512 byte could be used for the card’s

attribute memory space. This allows all of the Flash

memory to be used for the common memory space.

Part of the common memory space could also be used

to store the CIS if more than 512 bytes of CIS are

needed.

The EEPROM used in the “C” series card is a NEC

µPD28C05GX-20-EJA designed to operate from a 5 V

single power supply. The

µPD28C05 provides a Data

Polling function that provides the End of Write Cycle

and Auto Erase and Programming functions.

Table 10 shows the CIS information stored in the AMD

Flash memory card.

SYSTEM DESIGN AND INTERFACE

INFORMATION

Power Up and Power Down Protection

AMD’s Flash memory devices are designed to protect

against accidental programming or erasure caused by

spurious system signals that might exist during power

transitions. The AMD PC Card will power-up into a

READ mode when VCC is greater than VLKO of 3.2 V.

Erasing of memory sectors or memory segments can

be accomplished only by writing the proper Erase com-

mand to the card along with the proper Chip Enable,

Output Enable and Write Enable control signals. Hot in-

sertion of PC cards is not permitted by the PCMCIA

standard.

Note: Hot insertion is defined as the socket condition

where the card is inserted or removed with any or

all of the following conditions present: VCC = VCCH,

VPP =VPPH, address and/or data lines are active).

System Power Supply Decoupling

The AMD Flash memory card has a 0.1

µF decoupling

capacitor between the VCC and the GND pins. It is rec-

ommended the system side also have a 4.7

µF capac-

itor between the VCC and the GND pins.

AMC010CFLKA Datasheet(PDF) 39 Page - Advanced Micro Devices

AMC010CFLKA Datasheet(HTML) 39 Page - Advanced Micro Devices

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