SanDisk CompactFlash - System Power Requirements Comparison

CompactFlash Memory Card Product Manual
SanDisk CompactFlash Memory Card Product Manual © 1998 SANDISK CORPORATION10
1.7.1 System Power Requirements
The system power requirements for the
CompactFlash Memory Card are different from
those of the SDP5A FlashDisk. The two tables
below show the SDP5A FlashDisk and the
CompactFlash Memory Card power requirements.
SDCFB-XX
(Standard Version)
SDCFBI-XX
(Industrial Version)
DC Input Voltage (VCC)
100 mV max. ripple (p-p)
3.3V ±5% 5V ± 10% 3.3V ±5% 5 V ±5%
+5 V Currents
(maximum Average value)
See Notes 1 to 3.
Sleep:
Reading:
Writing:
Read/Write Peak
200 µA
(Slow - Fast)
32 mA - 45 mA
32 mA - 60 mA
150 mA/50µs
500 µA
(Slow - Fast)
46 mA - 75 mA
46 mA - 90 mA
150 mA/50µs
200 µA
(Slow - Fast)
32 mA - 45 mA
32 mA - 60 mA
150 mA/50µs
500 µA
(Slow - Fast)
46 mA - 75 mA
46 mA - 90 mA
150 mA/50µs
Note 1. All values quoted are typical at ambient temperature and nominal supply voltage unless otherwise stated.
Note 2. Sleep mode currently is specified under the condition that all card inputs are static CMOS levels and in a
“Not Busy“ operating state.
Note 3. The currents specified show the bounds of programmability of the product.
Model SDP5A Standard FlashDisk Industrial FlashDisk
DC Input Voltage (VPP) (Note 4) Not Used Not Used
DC Input Voltage (VCC)
100 mv max. ripple (p-p)
5 V ±10% 5 V ±5%
+5 V Currents
(maximum average value)
See Notes 1 to 5
Sleep:
Reading:
Writing:
Type III
Reading:
Writing:
≤ 1 mA
(Slow - Fast)
36 mA - 100 mA
36 mA - 125 mA
36 mA - 125 mA
36 mA - 150 mA
≤ 1 mA
(Slow - Fast)
36 mA - 100 mA
36 mA - 125 mA
36 mA - 125 mA
36 mA - 150 mA
Note 1. Sleep mode current is specified under the condition that all FlashDisk inputs are at static CMOS levels and
in a “Not Busy” operating state.
Note 2. The currents specified show the complete range of programmability in the PC Card ATA FlashDisk. A
tradeoff between performance and maximum current used can be done using the Set Features command.
The FlashDisk defaults to the fastest speed and highest current. See the Set Features command for more
details.
Note 3. For information on peak currents during power on, hot insertion and writing, please contact SanDisk
Technical Support at (408) 542-0400.
Note 4. The Vpp pins are not connected in this product.
Note 5. At maximum performance, typical average Read current is 70 mA and typical average write current is 100
mA.
1.7.2 Card Information Structure (CIS)
The Card Information Structure (CIS) of the
CompactFlash Memory Card is different from the
SDP5A FlashDisk CIS. The CompactFlash
Memory Card CIS indicates support for twin card
and 3.3 volt operation which are not supported in
the SDP5A FlashDisk. Both the SDP5A
FlashDisk and the CompactFlash Memory Card
support 5 volt operation.