AMC0XXCFLKA Datasheet, PDF (39/42 Pages) Advanced Micro Devices – 1, 2, 4, or 10 Megabyte 5.0 V-only Flash Memory PC Card

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 V_CC is greater than V_LKO 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: V_CC = V_CCH,
V_PP =V_PPH, 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 V_CC and the GND pins. It is rec-
ommended the system side also have a 4.7 µF capac-
itor between the V_CC and the GND pins.
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