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
512
512
Number of Cylinders
22600
22600
22600
Number of Disks
Number of Heads
4
2
2
Seek Time (Nominal)
3ms
3ms
3ms
Average
Full Track
24ms
24ms
24ms
Average Latency
7.1ms
7.1ms
7.1ms
Rotational Speed
4,200 RPM
4,200 RPM
4,200 RPM
Read Technology
MEEPRML, ID-Less Format
Recording Density
458,000 bpi
458,000 bpi
373,000 bpi
Track Density
37,600 tpi
37,600 tpi
37,600 tpi
66.6 MB/s max. (Ultra DMA mode 4)
Data Buffer
2048 kB
512 kB
512 kB
Physical Specifications
Dimensions
Height
9.5 mm
9.5 mm
9.5 mm
Width
70 mm
70 mm
70 mm
Depth
Weight
95 g
95 g
91 g
Power Requirements +5V +-5%
Seek
0.45 A (2.25W)
0.45 A (2.25W)
0.45 A (2.25W)
Spin-up
0.90 A (4.5W)
0.90 A (4.5W)
0.90 A (4.5W)
0.13 A (0.65W)
0.13 A (0.65W)
0.13 A (0.65W)
Read/Write
0.40 A (2.0W)
0.40 A (2.0W)
0.40 A (2.0W)
Sleep
0.020 A (0.1W)
0.020 A (0.1W)
0.020 A (0.1W)
Stand-by
0.050 A (0.25W)
0.050 A (0.25W)
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.)
25 dBA (typ.)
25 dBA (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)
63 (3Fh)
Word 60 61 Total LBA
39070080(02542980h)
©
Copyright Hitachi Global Storage Technologies 2003
Hitachi Global Storage Technologies
5600 Cottle Road
San Jose, CA 95193
Produced in the United States
All rights reserved
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
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