SLCF256JU STEC, SLCF256JU Datasheet - Page 38
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SLCF256JU
Manufacturer Part Number
SLCF256JU
Description
Manufacturer
STEC
Type
CompactFlashr
Datasheet
1.SLCF256JU.pdf
(47 pages)
Specifications of SLCF256JU
Density
256MByte
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)
3.18/4.75V
Operating Supply Voltage (max)
3.465/5.25V
Programmable
Yes
Lead Free Status / RoHS Status
Compliant
SLCFxxxJ(T2)(I)
Status Register
This read only register indicates status of a command
execution. When the BSY bit is “0”, the other bits are valid;
when the BSY bit is “1”, the other bits are not valid. When
the register is read, the interrupt (-IREQ pin) is cleared.
Alternate Status Register
This register is the same as the Status register except that
-IREQ is not negated when data is read.
Command Register
This write only register is used for writing the command that
executes the card’s operation. The command code is written
in the command register after its parameters are written in
the Task File during the card ready state. See details under
the ATA COMMAND SPECIFICATIONS.
bit Name
7
6
5
4
3
2
1
0
bit7
BSY
BSY (BuSY)
DRDY (Drive ReaDY)
DWF (Drive Write Fault)
DSC (Drive Seek Complete)
DRQ (Data ReQuest)
CORR (CORRected data)
IDX (InDeX)
ERR (ERRor)
DRDY
bit6
DWF
bit5
bit4
DSC
Function
This bit is set when the card internal operation is executing. When this bit is
set to “1”, other bits in this register are invalid.
If this bit and DSC bit are set to “1”, the card is capable of receiving the read
and write or seek requests. If this bit is set to “0”, the card prohibits these
requests. On error, DRDY changes only after the host reads the Status Register.
This bit is set if a fault occurs during the write process.
This bit is set when the requested sector was found.
This bit is set when information can be transferred between the host and data
register.
This bit is set when a correctable data error has occurred and the data has been
corrected.
This bit is always set to “0”.
This bit is set when the previous command has ended in some type of error.
The error information is set in the Error register.
DRQ
bit3
CORR
bit2
Document Part Number 61000-02805-111 March 2005
bit1
IDX
bit0
ERR
COMPACTFLASH
Page 38