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HA13556AF Datasheet(PDF) 6 Page - Hitachi Semiconductor

Part No. HA13556AF
Description  Combination of Spindle and VCM Driver designed for HDD and have Following Functions and Features
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Maker  HITACHI [Hitachi Semiconductor]
Homepage  http://www.renesas.com/eng
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HA13556AF Datasheet(HTML) 6 Page - Hitachi Semiconductor

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HA13566AF
6
The data bit DD9 determine the transfer gain G
VCM which is specified as the relationship between the input
data at the input data register and the output current at VCM amplifier. (See the under table)
DD9
DATA
I
O [mA]
1
1FF
+199.2/R
S
1
100
0.000
1
000
–200.0/R
S
0
1FF
+24.9/R
S
0
100
0.000
0
000
–25.0/R
S
Data Input Timing
SERENAB
CLK
DATA
A0 D9
Vth (= 1/2VCC2 Typ)
Vth
Vth
t0
t3
t2
t1
Latch point
Up date point
t4
t5
D8 D7 D6 D5 D4 D3 D2 D1 D0
t0
≥ 20ns
t1
≥ 20ns
t2
≥ 50ns
t3
≥ 40ns
t4
≥ 40ns
t5
≥ 40ns
Figure 4 Input Timing on Serial Port
Internal
DAC output
SERENAB
t6
t6
t6 : Conversion time of DAC
≤ 1µs
Figure 5 Conversion Timing on DAC


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