Hitachi DK23CA-30, DK23CA-20 DATASHEET

2.5 inch ATA-5 hard disk drives

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maximum capacity slimline notebooks

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

32-bit RISC microprocessor, Shock sensor, SMART

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Hitachi DK23CA series

Model

DK23CA-30

DK23CA-20

Performance

Total Capacity

Formatted

30.005 GB

20.003 GB

Per Sector (Bytes)

512

512

Number of Cylinders

28,134

28,134

Number of Disks

2

2

Number of Heads

3

Seek Time (Nominal)

3ms

3ms

Average

Full Track

24ms

24ms

Average Latency

7.1 ms

7.1 ms

Rotational Speed

4,200 RPM

4,200 RPM

Read Technology

MEEPRML, ID-Less Format

Recording Density

530 kbpi max.

530 kbpi max.

Track Density

46,800 tpi

46,800 tpi

Data Buffer

2048 kB

2048 kB

Physical Specifications

Dimensions

Height

9.5 mm

9.5 mm

Width

70 mm

70 mm

Depth

Weight

95 g

95 g

Power Requirements +5V +-5%

Seek

0.45 A (typ.)

0.45 A (typ.)

Spin-up

0.90 A (typ.)

0.90 A (typ.)

0.13 A (typ.)

0.13 A (typ.)

Read/Write

0.40 /0.42A (typ.)

0.40 A (typ.)

Sleep

0.020 A (typ.)

0.020 A (typ.)

Stand-by

0.050 A (typ.)

0.050 A (typ.)

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

2

(250G) or less, 2ms half sine wave

Non-Operating

7.840m/s

(800G) or less, 1 ms half sine wave

Vibration

Operating

9.8m/s

2

(1.0G) or less (22-500Hz)

Non-Operating

4.9m/s

(5G) or less (22-500Hz)

Acoustic Noise

2.8 Bels (typ.)

2.8 Bels (typ.)

Reliability

Preventive Maintenance

Not Required

Error Rate (Unrecoverable Errors)

Less than 1 per 10

13

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)

63 (3Fh)

Word 60 61 Total LBA

58605120(037E3E40h)

58605120(037E3E40h)