CompactFlash Memory Card Product Manual
SanDisk CompactFlash Memory Card Product Manual © 1998 SANDISK CORPORATION
11
1.7.3
Capacity Specifications
The capacity specifications for the SDP5A
FlashDisk are different from the capacity
specifications of the CompactFlash Memory Card.
The tables below show the capacity specifications
of the SDP5A FlashDisk and the CompactFlash
Memory Card.
Note:
SanDisk defines a megabyte as one million
bytes.
Model Number
Capacity
(formatted)
Sectors/Card
(Max LBA+1)
No. of
Heads
No. of
S e c t o r s /
Track
No. of
Cylinders
SDP5A-5
5,242,880 bytes
10,240
2
32
160
SDP5A-10
10,485,760 bytes
20,480
2
32
320
SDP5A-20
20,971,520 bytes
40,960
2
32
640
SDP5A-40
41,943,040 bytes
81,920
4
32
640
SDP5A-110
110,100,480 bytes
215,040
8
32
840
SDP5A-175
175,374,336 bytes
342,528
12
32
892
Model Number
Capacity
(formatted)
Sectors/Card
(Max LBA+1)
No. of
Heads
No. of
S e c t o r s /
Track
No. of
Cylinders
SDCFB-2
2,015,232 bytes
3936
2
16
123
SDCFB-4
4,030,464 bytes
7872
2
32
123
SDCFB-6
6,029,312 bytes
11,776
2
32
184
SDCFB-8
8,028,160 bytes
15,680
2
32
245
SDCFB-10
10,485,760 bytes
20,480
2
32
320
SDCFB-15
15,007,744 bytes
29,312
2
32
458
SDCFB-20
20,054,016 bytes
39,168
2
32
612
SDCFB-24
24,051,712 bytes
46,976
2
32
734
SDCFB-30
30,081,024 bytes
58,752
6
32
306
SDCFB-40
40,108,032 bytes
78,336
4
32
612
SDCFB-48
48,103,424 bytes
93,952
4
32
734
1.7.4
Voltage Sense Signal -VS1
The Voltage Sense Signal -VS1, pin 43, of the
CompactFlash Memory Card is grounded because
the Card Information Structure (CIS) can be read
at 3.3 volts. In the earlier SDP5A FlashDisk, this
pin is not grounded because the SDP5A FlashDisk
CIS can only be read at 5 volts.
Note:
In some early platforms, the -VS1 pin (pin 43) is
also the Refresh pin for DRAM cards. Plugging
the CompactFlash Memory Card into a platform
supporting the Refresh pin will hang the bus.
1.7.5
True IDE Mode
The CompactFlash Memory Card differs from the
SDP5A FlashDisk in that it can be configured in
True IDE Mode. See section 4.6 True IDE Mode I/O
Transfer Function.
