Hitachi DK23BA-20, DK23BA-10, DK23BA-60 DATASHEET

2.5 inch ATA-5 hard disk drives



20 GB in 9.5mm high package for maximum capacity

slimline notebooks

ATA-5 interface with 512 kB or 2048kB read/write cache

32-bit RISC microprocessor, Shock sensor, SMART

 6,10,



Hitachi DK23BA series

Model

DK23BA-20

DK23BA-10

DK23BA-60

Performance

Total Capacity

Formatted

20.00 GB

6.01 GB

Per Sector

512

Number of Cylinders

22600

Number of Disks

Number of Heads

Seek Time (Nominal)

3ms

Average

Full Track

24ms

Average Latency

7.1ms

Rotational Speed

4,200 RPM

Read Technology

MEEPRML, ID-Less Format

Recording Density

458,000 bpi

373,000 bpi

Track Density

37,600 tpi

66.6 MB/s max. (Ultra DMA mode 4)

Data Buffer

2048 kB

512 kB

Physical Specifications

Dimensions

Height

9.5 mm

Width

70 mm

Depth

Weight

95 g

91 g

Power Requirements +5V +-5%

Seek

0.45 A (2.25W)

Spin-up

0.90 A (4.5W)

0.13 A (0.65W)

Read/Write

0.40 A (2.0W)

Sleep

0.020 A (0.1W)

Stand-by

0.050 A (0.25W)

Temperature

Operating

5° to 55°C(41° to 131°F)

Non-Operating

-40° to 70°C(-40° to 158°F)

Environmental Conditions

Relative Humidity

Operating

5% to 90%

Non-Operating

5% to 95%

Max.Wet Bulb

29°C(84.2°F non-condensing)

Shock

Operating

Non-Operating

800 G or less, 1 ms half sine wave

Vibration

Operating

Non-Operating

5G or less (22-500Hz)

Acoustic Noise

25 dBA (typ.)

Reliability

Preventive Maintenance

Not Required

Error Rate (Unrecoverable Errors)

Less than 1 per 10

bits read

Identify Device Information for Setup (Addressing)

Word 1 Number of CYL.

Word 3 Number of HD

Word 6 Number of SPT

63 (3Fh)

Word 60 61 Total LBA

39070080(02542980h)

Hitachi Global Storage Technologies

5600 Cottle Road

San Jose, CA 95193

Produced in the United States

References in this publication to Hitachi Global Storage

Technologies products, programs or services do not

imply that Hitachi Global Storage Technologies intends

to make these available in all countries in which Hitachi

Global Storage Technologies operates.

Product information is provided for information pur-

poses only and does not constitute a warranty.

subject to change. Actual results may vary.

This publication is for general guidance only.

Photographs may show design models.

DS.DK32BA.0800

Internet:

www.hgst.com