SDCFJ-1024-388 SanDisk, SDCFJ-1024-388 Datasheet - Page 65

• Manufacturer Part Number: SDCFJ-1024-388
• Description: COMPACT FLASH 1GB
• Manufacturer: SanDisk
• Type: CompactFlashr

Specifications of SDCFJ-1024-388

• Memory Size: 1GB
• Memory Type: CompactFLASH
• Density: 1GByte
• Operating Supply Voltage (typ): 3.3/5V
• Operating Temperature (min): 0C
• Operating Temperature (max): 70C
• Package Type: Not Required
• Mounting: Socket
• Pin Count: 50
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (min): 3.135/4.5V
• Operating Supply Voltage (max): 3.465/5.5V
• Programmable: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ATA Command Description
This command causes the CompactFlash Card to set BSY, enter the Idle (Read) mode, clear BSY and generate an
interrupt. If the sector count is non-zero, it is interpreted as a timer count with each count being 5 milliseconds and
the automatic power down mode is enabled. If the sector count is zero, the automatic power down mode is disabled.
Note that this time base (5 msec) is different from the ATA specification.
5.1.7. Idle Immediate—95H, E1H
This command causes the CompactFlash Memory Card to set BSY, enter the Idle (Read) mode, clear BSY and
generate an interrupt.
5.1.8. Initialize Drive Parameters—91H
This command enables the host to set the number of sectors per track and the number of heads per cylinder. Only the
Sector Count and the Card/Drive/Head registers are used by this command.
NOTE: SanDisk recommends NOT using this command in any system because DOS determines the offset to the
5-12
Command (7)
Command (7)
Sec Num (3)
Sec Num (3)
Cyl High (5)
Cyl High (5)
Cyl Low (4)
Cyl Low (4)
Boot Record based on the number of heads and sectors per track. If a CompactFlash Memory Card is
“Formatted” with one head and sector per track value, the same CompactFlash Card will not operate
correctly with DOS configured with another heads and sectors per track value.
Sec Cnt (2)
Sec Cnt (2)
Feature (1)
Feature (1)
C/D/H (6)
C/D/H (6)
Bit ->
Bit ->
X
7
7
6
X
6
0
Table 5-15. Initialize Drive Parameters
CompactFlash
Table 5-14. Idle Immediate
X
5
5
®
Memory Card Product Manual, Rev. 11.0 ©2006 SanDisk Corporation
Number of Sectors
Drive
Drive
4
4
E1H or 95H
91H
X
X
X
X
X
X
X
X
X
3
3
Max Head (no. of heads-1)
2
2
X
1
1
0
0