Hitachi DK23DA-20F - 3.1 Principal Specifications

K6602705
Rev.3
08.20.01
- 13 -
3.0 Specification Summary
3.1 Principal Specifications
Table 3.1 Principal Specifications
Specifications
No. Item
DK23DA-
40F
DK23DA-
30F
DK23DA-
20F
DK23DA-
10F
Units
1 Capacit
y
per drive
(
Formatted
)
40.007 30.005 20.003 10.056 GB
Capacit
y
per sector 512 B
y
tes
Disks 2211
Heads 4321
C
y
linders 33
,
067
2 Seek time Avera
g
e 13
*1
ms
(
Nominal Maximum 25
*1
ms
value
)
Minimum 3 ms
3Avera
g
e latenc
y
7.1 ms
Disk rotational speed 4
,
200 RPM
4 Recordin
g
densit
y
Max. 600 kBPI
Track densit
y
55.0 kTPI
Recordin
g
method ME
2
PRML
,
ID-Less format
5 Interface ATA-5
(
IDE
)
Data transfer rate
(
Disk-Buffer
)
18.7 – 34.7 MB/sec
Data transfer rate
(
Host-Buffer
)
Max. 16.6 MB/sec
(
PIO mode 4/ Multiword DMA mode 2
)
Max. 100
(
Ultra DMA mode 5
)
MB/sec
Buffer size 2
,
048 kB
6 Power on - Read
y
*2
5
(
T
y
pical
)
*3
sec
Sleep/Standb
y
- Read
y
*2
3
(
T
y
pical
)
*3
sec
7
Dimensions
（
W
×
H
×
D) 70W
×
9.5H
×
100D
mm
Wei
g
ht
(
Approximate value
)
95 95 91 91
g
rams
8 DC Power Requirements
*4
(Typical)
+
5v
±
5% Ripple noise 150mvp-p or less
- Start up
*5
0.90 A(4.5W)
- Idle
*6
0.13 A(0.65W)
- Low Power Active
*7
0.33 A(1.65W)
-Seek
*8
0.45 A(2.25W)
- Read/Write
*9
0.40/0.40 A(2.0/2.0W)
- Standby 0.050 A(0.25W)
- Sleep 0.020 A(0.1W)