M K - 2 7 2 0 F C TOSHIBA Native| Translation ------+-----+-----+----- Form 2.5"/SUPERSLIMLINE Cylinders 2920| | | Capacity form/unform 1296/ MB Heads 10| | | Seek time / track 13.0/ 3.0 ms Sector/track | | | Controller IDE / ATA2 FAST/ENHA Precompensation Cache/Buffer 128 KB READ-AHEAD Landing Zone Data transfer rate 5.000 MB/S int Bytes/Sector 512 16.600 MB/S ext PIO1 Recording method PRML 8/9 operating | non-operating -------------+-------------- Supply voltage 5 V Temperature *C 5 55 | -20 60 Power: sleep 0.2 W Humidity % 8 80 | 8 80 standby 0.4 W Altitude km -0.300 3.000| -0.400 15.000 idle 1.8 W Shock g | seek 4.5 W Rotation RPM 4200 read/write 3.4 W Acoustic dBA 36 spin-up 7.5 W ECC Bit 168BIT,ON THE FLY MTBF h 300000 Warranty Month Lift/Lock/Park YES Certificates CSA,TUV,UL1950 ********************************************************************** L A Y O U T ********************************************************************** TOSHIBA MK2720FC PRODUCT SPECIFICATION 71Y102821 20/07/1995 +-J2 MASTER/SLAVE 43--------------------------------------------+1+-+ |* * * * * * * * * * * * * * * * * * * * * * *|*|*| ---+* * * * * * * * * * * * * * * * * * * * * *|*|*+----- 44-----------------------+--------------------+2+-J1 RESERVED | +-+ Polarity Key ********************************************************************** J U M P E R S ********************************************************************** TOSHIBA MK2720FC PRODUCT SPECIFICATION 71Y102821 20/07/95 Jumper Setting ============== Master/Slave Configuration -------------------------- By using the CSEL pin (PIN 28) and the optional jumper J2 beside the interface connector, two units can be connected on a cable in a daisy chain. When J2 is open, the drive runs as master drive. When J2 is closed, it acts as slave drive. In In case of two drive connection, one should be a master and another should be a slave. In case of single drive connection, it should be defined as master. Both master and slave drive are allocated onto same I/O area and identified by Drive bit in DRVH register. Host system writes into register on both drives but reads register only from a selected drive. Only the selected drive can execute the command except Diagnose command. Diagnose is executed on both drives and the result of slave drive is transferred to master drive through PDIAG line. Master drive reports both results to host system. Interface Pin 28 -CSEL ---------------------- Same function as Option Jumper J2 is provided onto this line. Definition of Master/Slave should be done either by this pin or J2. If J2 is plugged for Master, this line does not affect to the definition. This selection is done by Toshiba Specific command. ********************************************************************** I N S T A L L ********************************************************************** TOSHIBA MK2720FC PRODUCT SPECIFICATION 71Y102821 20/07/1995 Notes On Installation ===================== Installation ------------ The drive should be mounted carefully on the surface of 0.1 mm flatness or less to avoid excessive distortion. It is recommended the space greater than 1 mm is kept under the PCB and it is important to check enough for safe design to prevent short- circuit under any circumstances. Enough room to avoid any mechanical interference when receiving shock or vibration is required especially around the convex portion in the HDA. The temperature of the top cover and the base must be kept under 60*C at any moment to maintain the desired reliability. The M3 mounting screw holes are tapped directly on the aluminium portion of HDA for electrical ground. The other are tapped on the plastic portion for electrical insulation. Screw holes for mounting can be determined by the evaluation results of the electromagnetic noise emitted from the host system to drive. The breathing hole should be kept open after mounting. A maximum force of 2N should be allowed on the top cover to avoid the drive damage. Screwing -------- Four screws should be tightened equally with 0.3N.m (3 kgf.cm) torque. The depth should be 3.0 mm min. 3.5mm maximum. Cable Connection ---------------- +------------------------+---------------------------------------+ |Interface Connector | | |Drive side connector | Yamaichi GAP050K11617 | +------------------------+---------------------------------------+ Cable Twisted pair type cable is recommended as follows: Standard diameter 0.32mm (28 AWG) Characteristic impedance 100-132 Cable length and capacitance 0.46 MAX. 35pF MAX. Grounding --------- HDA (Head Disk Assembly) and DC ground (ground pins on interface) are electrically connected each other. ********************************************************************** F E A T U R E S ********************************************************************** TOSHIBA MK-2720FC PRODUCT SPECIFICATION 71Y102821 20/07/1995 General Description ------------------- The MK2720FC comprises a series of intelligent disk drives, hereinafter referred to as the MK2720FC or simply as the drive. The drive features an ATA-2 interface embedded controller that requires a simplified adapter board for interfacing to an AT or AT compatible bus. The drives employ Winchester technology and a cloosed loop servo control system to realize recording density of 711kbit/ mm (459 Mbit/inch ) and average access time of 13 msec with highest reliability of 300,000 hours for MTTF (Mean Time to Failure). It features smallest and lightest drive with 19mm height half foot- print of market standard 3.5" type micro FDD and 220 grams of weight. The MK2720FC consists of an HDA (Head Disk Assembly) and a printed circuit board. The HDA is a sealed module and contains a disk spindle assembly, a head actuator assembly and an air filtration system. Reliability is enhanced through the use of Winchester technology. The actuator is a rotary voice coil motor and provides high-speed access. The disk is driven directly by a DC spindle motor. Air filtration is provided by means of a high performance air filtration system using both breather and circulation filters. The drive provides a carriage lock mechanism which is activated automatically upon power is down, thus preventing head/media damage during non-operating or transportation conditions. The printed circuit board is located externally to the HDA and contains all the electric circuitry necessary to operate the drive except the head drivers. This board contains the power supply and interface signal connectors. Only the head control IC's are located within the HDA. The circuitry perform the following functions: Read/Write, Task File Control, Spindle Motor Control, Seek and Head Positioning Servo Control, Abnormal Condition Detection and Shock Sensor Control. Some Key Features ----------------- - Quick spin up of Spindle Motor 5sec. - Average access time of 13 msec realized by optimized balance of a heead actuator assembly and an efficiently designed magnet of Rotary VCM. - Read ahead cache and write cache enhancing system throughput. - Fail-safe power down return heads to landing zone with automatic carriage lock realized high immunity to operating shock 2,000 m/s .