HB288256C5 Datasheet, PDF (65/67 Pages) Hitachi Semiconductor – CompactFlash™

HB288256/192/160/128/096/064/032C5
Power on Reset Characteristics
All card status are reset automatically when V_CC voltage goes over about 2.3 V.
Parameter
-CE setup time
VCC rising up time
Symbol
tsu(VCC)
tpr
Min
Typ Max Unit
100
—
—
ms
0.1
—
100
ms
Test conditions
Power on Reset Timing
Vcc
-CE1, -CE2
tpr
tsu(vcc)
Attention for Card Use
• In the reset or power off, all register informations are cleared.
• All card status are cleared automatically when V_CC voltage turns below about 2.5V.
• Notice that the card insertion/removal should not be executed during host is active, if the card is used in
True IDE mode.
• After the card hard reset, soft reset, or power on reset, ATA reset, command applied the card cannot
access during +RDY/-BSY pin is "low" level. Flash card can’t be operated in this case.
• Card removal or power off should not be done during internal operations. When the removal or power off
occurred during internal operation, there is the possibility that data are lost.
• Before the card insertion V_CC can not be supplied to the card. After confirmation that -CD1, -CD2 pins are
inserted, supply V_CC to the card.
• -OE must be kept at the V_CC level during power on reset in memory card mode and I/O card mode. -OE
must be kept constantly at the GND level in True IDE mode.
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