HA12215F is silicon monolithic bipolar IC providing Dolby noise reduction system*1, music sensor
system, REC equalizer system and each electronic control switch in one chip.
Note: 1. Dolby is a trademark of Dolby Laboratories Licensing Corporation.
A license from Dolby Laboratories Licensing Co r por ation is required for the use of this IC.
Functions
• Dolby B-NR× 2 channel
• REC equalizer × 2 channel
• Music sensor× 1 channel
• Pass amp.× 2 channel
• Each electronic control switch to change REC equalizer, bias, etc.
Features
• REC equalizer is very small number of external parts and have 6 types of frequency characteristics
built-in.
• 2 types of input for PB, 1 type of input for REC.
• 70µ - PB equalizer changing system built-in.
• Dolby NR with dubbing double cassette decks.
Unprocessed signal output available from recording out terminals during PB mode.
• Provide stable music sensor system, available to design music sensing time and level.
• Controllable from direct micro-computer output.
• Bias oscillator control switch built-in.
• NR ON / OF F and REC / PB fully electronic control switch ing built-in.
• Normal-speed / high-speed, Normal / Crom / Metal and PB equalizer fully electronic control switching
built-in.
• Available to reduce substrate-area because of high integration and small external parts.
HA12215F❍❍❍❍❍❍
Note: Depending on the employed REC / PB head and test tape characteristics, there is a rare case that
the REC-EQ characteristics of this LSI can not be matched to the required characteristics because of
built-in resistors which determined the REC-EQ parameters in this case, please inquire the
responsible agent because the adjustment built-in resistor is necessary.
SensorPass Amp.
REC / PB
SelectionALC
Rev.5, Oct. 1999, page 2 of 69
Page 3
HA12215F
Pin Description, Equivalent Circuit (VCC = ±7 V, A system of split supply voltage,
Ta = 25°C, No Signal, The value in the show typical value.)
LoLoFLATFLAT
LoHi or MidFLAT70 µ
HiLo70 µFLAT
HiHi or Mid70 µ70 µ
Rev.5, Oct. 1999, page 8 of 69
Page 9
HA12215F
Functional Description
Power Supply Range
HA12215F is designed to operate on split supply.
Table 1Supply Voltage
ProductVCC (V)VEE (V)Note
HA12215F+6.0 to +7.5–7.5 to –6.0| V
Note: The lower limit of supply voltage depends on the line output reference level.
The minimum value of the overload margin is specified as 12 dB by Dolby Laboratories.
Reference Voltage
The reference voltage are provided for the left channel and the right channel separately. The block diagram
is shown as figure 1.
+ VEE | < 1.0 V
CC
21
V
49
50
CC
GND
V
EE
V
CC
V
EE
+
−
L channel reference
+
−
Music sensor reference
+
−
R channel reference
Figure 1 Reference Voltage
Rev.5, Oct. 1999, page 9 of 69
Page 10
HA12215F
Operating Mode Control
HA12215F provide fully electronic switching circuits. And each operating mode control is controlled by
parallel data (DC voltage).
Table 2Control Voltage
Pin No.LoMidHiUnitTest Condition
15, 16, 17, 18,
20, 22, 23, 25
–0.2 to 1.0—4.0 to V
CC
V
Input PinMeasure
19, 24–0.2 to 1.02.0 to 3.04.0 to V
CC
Notes: 1. Each pins are on pulled down with 100 kΩ inter nal resi stor.
Therefore, it will be low-level when each pins are open.
But pin 24 is mid-level when it is open.
2. Over shoot level and under shoot level of input signal must be the standardized (High: V
Low: –0.2 V).
3. For reduction of pop noise, connect 1 µF to 22 µF capacitor with mode control pins.
But it is impossible to reduce completely in regard to Line mute, therefore, use external mute at
the same time.
Input Block Diagram and Lev e l Diagram
The each level shown above is typical value
when offering PBOUT level to PBOUT pin.
AIN
BIN
25.9mVrms
21.3dB
300mVrms
4700pF
R3
12k
C2
FLAT
(120µ)
70µs
R4
15k
25.5mVrms
200mVrms
MSREF
300mVrms
PB/REC,
PASS=0dB/21.4dB
0dB
PB
REC
PASS
C1
0.1µF
R1
15k
RIN
R2
2.2k
PASS
300mVrms
0.1µF
V
Dolby
B-NR
ALC
C3
REC
PB
PASS/REC,
PB=5.7dB/5.7dB
300mVrms
,
CC
PBOUT
580mVrms
RECOUT
300mVrms
Rev.5, Oct. 1999, page 10 of 69
Figure 2 Input Block Diagram
Page 11
HA12215F
PB Equalizer
By switching logical input level of pin 17 (for Ain) and pin 19 (for Bin), you can equalize corresponding to
tape position at play back mode.
With the capacity C2 capacitance that we showed for figure 2 70 µs by the way figure seem to 3 they are
decided.
G
V
t1 = C2 ⋅ (12k + 15k)
t2 = C2 ⋅ 15k
t1t2
Figure 3 Frequency Characteristic of PB Equalizer
The Sensitivity Adjustment o f Music Sensor
f
Adjusting MS Amp gain by external resistor , the sensitivity of music sensor can set up.
REP
V
CC
DET
MS
DET
+
C13
0.33µ
MS OUT
GND
PB (L)
−6dB
PB (R)
8.2k
LPF
25kHz
MAI
100k
−
+
MS AMP
C16
1000p
MA
OUT
R13
330k
MSIN
50k
Figure 4 Music Sensor Block Diagram
D V
CC
R
L
Microcomputer
GND
Rev.5, Oct. 1999, page 11 of 69
Page 12
HA12215F
The Sensitivity of Music Sensor
A standard level of MS input pin 25.9 mVrms, therefore, the sensitivity of music sensor (S) can request
it, by lower formulas.
A = MS Amp Gain*
B = PB input Gain × (1/2)*
C = Sensed voltage
20log (A × B) = D [dB]
C = 130 [mVrms] (Intenally voltage in a standard)
PB input Gain = 21.3 [dB]
Notes: 1. When there is not a regulation outside.
2. Case of one-sided channel input.
But necessary to consider the same attenuation quantity practically, on account of A(B) h ave made
frequency response.
37.7dB
1
2
S = 20log
S = 14 − D [dB]
G
V
C
25.9 ⋅ A ⋅ B
[dB]
f1 =
f2 = 25k [Hz]
f
f1f2
1
2π⋅ C16 ⋅ 50k
[Hz]
Figure 5 Frequency Characteristic of MSIN
Occasion of the external component of figure 4, f1 is 3.18 kHz.
Time constant of detection
Figure 6(1) generally shows that detection time is in proportion to value of capacitor C13. But, with
Attack*
2
and Recovery*3 the detection time differs exceptionally.
Notes 2. Attack: Non- music to Music
3. Recovery : Music to Non-music
Recovery
Attack
Detection time
C13
(1)(2)(3)
RecoveryRecovery
AttackAttack
Detection time
R13
Detection level
Detection time
Input level
Figure 6 Function Characteristic of MS
Like the figure 6(2), Recovery time is variably possible by value of resistor R13. But Attack time gets
about fixed value. Attack time has dependence by input level. When a large signal is inputted, Attack time
is short tendency.
Rev.5, Oct. 1999, page 12 of 69
Page 13
HA12215F
Music Sensor Output (MSOUT)
As for internal circuit of music sensor block, music sensor output pin is connected to the collector of
NPN type directly, output level will be “high” when sensing no signal. And output level will be “low”
when sensing signal.
Connection with microcomputer, it is requested to use external pull up resistor (R
Note: Supply voltage of MSOUT pin must be less than V
voltage.
CC
The Tolerances of External Components
For Dolby NR precision securing, please use external components shown at figure 7. If leak-current are a
few electrolytic-capacitor, it can be applicable to C5 and C23.
V
EE
C23
0.1µ±10%
42
DET (L)
HA12215F
= 10 kΩ to 22 kΩ)
L
DET (R)
C5
0.1µ
±10%
BIAS1
1
2
R5
33k
±2%
V
EE
Figure 7 Tolerance of External Components
Low-Boost
EQIN
24.6dB
4.8k
4.8k
BOOST
+
C9(C19)
0.47µ
REC EQ
EQOUT
Figure 8 Example of Low Boost Circuit
External components shown figure 8 gives frequency response to take 6 dB boost. And cut off frequency
can request it, by C9 (C19).
Rev.5, Oct. 1999, page 13 of 69
Page 14
HA12215F
REC Equalizer
The outlines of REC Equalizing frequency characteristics are sh own by figure 9. Those peak level can be
set up by supplying voltage. (0 V to 5 V, GND = 0 V) to pin 10 (GPCAL).
And whole band gain can be set up by supplying voltage (0 V to 5 V, GND = 0 V) to pin 11 (RECCAL).
Both setting up range are ±4.5 dB. In case that you do not need setting up, pin 10, pin 11 should be open
bias.
Note: Depending on the employed REC/PB head and test tape characteristics, there is a rare case that the
REC-EQ characteristics of this LSI can not be matched to the required characteristics because of
built-in resistors which determined the REC-EQ parameters in this care, please inquire the
responsible agent because of the adjustment of built-in resistor is necessary.
RECCAL
GPCAL
Gain (dB)
Frequency (Hz)
Figure 9 Frequency Characteristics of REC Equalizer
Bias Switch
HA12215F built-in DC voltage generator for bias oscillator and its bias switches.
External resistor R19, R20, R21 which corresponded with tape positions and bias out voltage are relater
with below.
.
Vbias = × (VCC − VEE − 0.7) + VEE [V]
.
(R19 or R20 or R21) + R22
R22
Bias switch follows to a logic of pin 19 (B / Norm / Crom / Metal).
Note: A current that flows at bias out pin, please use it less than 5 mA.
Rev.5, Oct. 1999, page 14 of 69
Page 15
HA12215F
BIAS (N)
Pin 33
BIAS (C)
Pin 32
BIAS (M)
Pin 31
R21
R20
R19
R22
V
Vbias
EE
Figure 10 External Components of Bias Block
Automatic Level Control
ALC is the input decay rate variable system. It has internal variable resistors of pin 55 (pin 44) by
RECOUT signal that is inputted to p in 9 (pin 34 ) .
The operation is similitude to MS, detected by pin 13.
The signal input pin is pin 56 (pin 43). Resistor R1, R2 and capacitor C2, external components, for the
input circuit are commended as figure 12. There are requested to use value of the block diagram figure for
performance maintenance of S/N, T.H.D. etc.
Figure 11 shows the relation with R1 front RIN point and ROUT.
ALC operation level acts for the center of +4.5 dB at tape position TYPE I, IV and the center of +2.5 dB at
tape position TYPE II, to standard level (300 mVrms).
Then, adopted maximum value circuit, ALC is operated by a large channel of a signal.
ALC ON/OFF can switch it by pin 15. Please do ALC ON, after it does for one time ALC OFF inevitably,
for ALC time to start usefully (when switching PB → PASS, when switching PB → PASS), in order to
reset ALC circuit.
TYPE I, IV
4.5dB
RIN
300mV
ROUT
TYPE II
2.5dB
Figure 11 ALC Operation Level
Rev.5, Oct. 1999, page 15 of 69
Page 16
HA12215F
R1
15k
RINROUT
25.5mV21.4dB
C2
0.1µ
R2
2.2k
56
55
ALC
ALC
8OutputInput
9
13
300mV
C4
ALCIN
ALCDET
R12
C12
V
+
CC
Figure 12 ALC Block Diagram
ALC Operation Level Necessary
ALC operation level is variable to pin 12 bias (ALC-CAL: 0 to 5 V), and its range is ±4.0 dB.
Unnecessary, pin 12 is unforced.
ALC-CAL = 5V
ALC-CAL = 0V
ROUT
RIN
Figure 13 ALC-CAL Characteristics
Rev.5, Oct. 1999, page 16 of 69
Page 17
HA12215F
Absolute Maximum Ratings
ItemSymbolRatingUnitNote
Max supply voltageV
Power dissipationPd625mWTa ≤ 75°C
Operating temperatureTopr–40 to +75°C
Storage temperatureTstg–55 to +125°C
Ripple Rejection Ratio vs. Frequency (RECmode) (1)
EQOUT(NN)
−20
−40
Ripple Rejection Ratio R.R.R. (dB)
−60
−80
20
0
VS = ±7.0V
V
in
EE
RECmode
100101k10k100k
Ripple Rejection Ratio vs. Frequency (RECmode) (2)
RECOUT
NR-ON
PBOUT
RECOUT
NR-OFF
Frequency (Hz)
EQOUT(NN)
−20
−40
Ripple Rejection Ratio R.R.R. (dB)
−60
−80
Rev.5, Oct. 1999, page 52 of 69
RECOUT
NR-ON
RECOUT
NR-OFF
PBOUT
100101k10k100k
Frequency (Hz)
Page 53
20
VS = ±7.0V
V
PBmode
CC
HA12215F
Ripple Rejection Ratio vs. Frequency (PBmode) (1)
in
0
−20
PBOUT
NR-OFF
−40
PBOUT
Ripple Rejection Ratio R.R.R. (dB)
−60
−80
20
VS = ±7.0V
V
EE
PBmode
0
NR-ON
100101k10k100k
Ripple Rejection Ratio vs. Frequency (PBmode) (2)
in
EQOUT(NN)
RECOUT
Frequency (Hz)
EQOUT(NN)
PBOUT
NR-OFF
−20
−40
Ripple Rejection Ratio R.R.R. (dB)
−60
−80
100101k10k100k
PBOUT
NR-ON
RECOUT
Frequency (Hz)
Rev.5, Oct. 1999, page 53 of 69
Page 54
HA12215F
20
VS = ±7.0V
V
CC
PASSmode
0
in
Ripple Rejection Ratio vs. Frequency (PASSmode) (1)
EQOUT(NN)
−20
−40
Ripple Rejection Ratio R.R.R. (dB)
−60
−80
20
0
−20
VS = ±7.0V
V
in
EE
PASSmode
100101k10k100k
Ripple Rejection Ratio vs. Frequency (PASSmode) (2)
RECOUT
NR-ON
PBOUT
RECOUT
NR-OFF
Frequency (Hz)
EQOUT(NN)
RECOUT
NR-ON
−40
Ripple Rejection Ratio R.R.R. (dB)
−60
−80
Rev.5, Oct. 1999, page 54 of 69
PBOUT
RECOUT
NR-OFF
100101k10k100k
Frequency (Hz)
Page 55
55
VS = ±7.0V
Norm speed
50
45
40
35
30
25
REC-EQ Gain (dB)
20
15
10
HA12215F
Equalizer Amp. Gain vs. Frequency (1)
Crom
Metal
Norm
5
55
VS = ±7.0V
High speed
50
45
40
35
30
25
REC-EQ Gain (dB)
20
15
10
100101k10k100k
Frequency (Hz)
Equalizer Amp. Gain vs. Frequency (2)
Crom
Metal
Norm
5
100101k10k100k
Frequency (Hz)
Rev.5, Oct. 1999, page 55 of 69
Page 56
HA12215F
55
50
45
40
35
30
Equalizer Amp. Gain vs. Frequency (RECcal)
VS = ±7.0V
REC-cal
Norm speed, Norm tape
25
REC-EQ Gain (dB)
20
15
10
5
55
VS = ±7.0V
GP-cal
50
Norm speed, Norm tape
45
40
35
30
REC-cal = 5.0V
REC-cal = 2.5V
REC-cal = 0V
100101k10k100k
Frequency (Hz)
Equalizer Amp. Gain vs. Frequency (GPcal)
GP-cal = 0V
GP-cal = 2.5V
25
REC-EQ Gain (dB)
20
15
10
5
Rev.5, Oct. 1999, page 56 of 69
GP-cal = 5.0V
100101k10k100k
Frequency (Hz)
Page 57
Equalizer Total Harmonic Distortion vs. Output Level (1)
100
NNmode
EQIN → EQOUT
V
= ±7.0V
S
20Hz
1kHz
10
1.0
REC-EQ T.H.D. (%)
0.1
5kHz
10kHz
add BOOST C
HA12215F
−20
Output Level Vout (dB)
Equalizer Total Harmonic Distortion vs. Output Level (2)
100
NCmode
EQIN → EQOUT
V
= ±7.0V
S
20Hz
1kHz
10
1.0
REC-EQ T.H.D. (%)
0.1
5kHz
10kHz
add BOOST C
5100−5−10−15
15
−20
Output Level Vout (dB)
5100−5−10−15
Rev.5, Oct. 1999, page 57 of 69
15
Page 58
HA12215F
Equalizer Total Harmonic Distortion vs. Output Level (3)
100
NMmode
EQIN → EQOUT
V
= ±7.0V
S
20Hz
1kHz
10
1.0
REC-EQ T.H.D. (%)
0.1
5kHz
10kHz
add BOOST C
−20
Output Level Vout (dB)
Equalizer Total Harmonic Distortion vs. Output Level (4)
100
HNmode
EQIN → EQOUT
V
= ±7.0V
S
20Hz
2kHz
10
1.0
REC-EQ T.H.D. (%)
0.1
10kHz
20kHz
add BOOST C
5100−5−10−15
15
−20
Rev.5, Oct. 1999, page 58 of 69
Output Level Vout (dB)
5100−5−10−15
15
Page 59
Equalizer Total Harmonic Distortion vs. Output Level (5)
100
HCmode
EQIN → EQOUT
V
= ±7.0V
S
20Hz
2kHz
10
1.0
REC-EQ T.H.D. (%)
0.1
10kHz
20kHz
add BOOST C
HA12215F
−20
Output Level Vout (dB)
Equalizer Total Harmonic Distortion vs. Output Level (6)
100
HMmode
EQIN → EQOUT
V
= ±7.0V
S
20Hz
2kHz
10
1.0
REC-EQ T.H.D. (%)
0.1
10kHz
20kHz
add BOOST C
5100−5−10−15
15
−20
Output Level Vout (dB)
5100−5−10−15
Rev.5, Oct. 1999, page 59 of 69
15
Page 60
HA12215F
Equalizer Signal to Noise Ratio vs. Split Supply Voltage (1)
70
65
REC-EQ S/N (dB)
60
f = 1kHz
A-WTG filter
Norm speed
NN
NC
55
5
NM
678
Split Supply Voltage (V)
9
Equalizer Signal to Noise Ratio vs. Split Supply Voltage (2)
70
65
REC-EQ S/N (dB)
60
f = 1kHz
A-WTG filter
High speed
HN
HC
55
5
HM
678
Split Supply Voltage (V)
9
Rev.5, Oct. 1999, page 60 of 69
Page 61
Equalizer Vomax vs. Split Supply Voltage (1)
20
f = 1kHz
add BOOST C
NN
NC
15
10
REC-EQ Vomax (dB)
5
0
5
NM
678
HA12215F
9
Split Supply Voltage (V)
Equalizer Vomax vs. Split Supply Voltage (2)
20
f = 1kHz
add BOOST C
HN
HC
15
10
REC-EQ Vomax (dB)
5
0
5
HM
678
9
Split Supply Voltage (V)
Rev.5, Oct. 1999, page 61 of 69
Page 62
HA12215F
RECcal Correction vs. V
5
f = 3kHz
GP-cal OPEN
4
V
= ±7V
S
Norm speed
3
Norm tape
2
1
0
−1
RECcal Correction (dB)
−2
−3
−4
−5
025143
V
REC-cal
REC-cal
(V)
GPcal Correction vs. V
5
4
3
2
1
0
−1
GPcal Correction (dB)
−2
f = 12kHz
−3
REC-cal OPEN
V
= ±7V
S
−4
Norm speed
Norm tape
−5
5
678
V
GP-cal
GP-cal
9
(V)
Rev.5, Oct. 1999, page 62 of 69
Page 63
ALC Operate Level vs. Input Level
10
f = 1kHz, VS ±7.0V, Both channel input (L, Rch)
RIN → RECOUT, RIN = 192.8mVrms = 0dB
8
TYPE II
TYPE I, IV
cal = 5V
cal = 5V
6
cal = 2.5V
4
cal = 2.5V
HA12215F
2
cal = 0V
0
Output Level RECOUT (dB) 0dB = 300mVrms
cal = 0V
−2
−53020100
51525
Input Level Vin (dB) RIN = 192.8mVrms = 0dB
ALC Total Harmonic Distortion vs. Input Level (1)
f = 1kHz, V
TYPE I,IV
= ±7.0V
S
(Norm tape, Metal tape)
1.0
Cal = 0V
Cal = 2.5V
Cal = 5V
0.1
T.H.D. (%)
0dB = 192.8mVrms
Vin
R4
13kC40.1µ
R3
2.2k
56
55
RIN
ALC
35
0.01
−5
Input Level Vin (dB)
2025151050
30
Rev.5, Oct. 1999, page 63 of 69
Page 64
HA12215F
ALC Total Harmonic Distortion vs. Input Level (2)
10
f = 1kHz, V
TYPE II
(Crom tape)
1.0
0.1
T.H.D. (%)
0.01
−5
= ±7.0V
S
Cal = 0V
Cal = 2.5V
Cal = 5V
Input Level Vin (dB)
ALC Operate Level vs. Frequency
2025151050
30
8
6
4
2
0
−2
Operate Level RECOUT (dB) 0dB = 300mVrms
−4
Rev.5, Oct. 1999, page 64 of 69
Vin = ±12dB, Both channel input (L, Rch), RIN → RECOUT
TYPE I, IV (Norm tape, Metal tape)
TYPE II (Crom tape)
1001k10k50k
ALC-CAL = 5V
ALC-CAL = 2.5V
ALC-CAL = 0V
Frequency (Hz)
Page 65
Bias Output Voltage vs. Load Current
8
VS = ±7.0V
Bias ON
7
6
Bias Output Voltage (V)
5
0
270Ω
31
V
Load Current I (mA)
I
HA12215F
564321
7
MS Sensing Level vs. Frequency
0
−10
−20
MS Sensing Level (dB)
−30
1001k10k100k
Frequency (Hz)
VS = ±7.0V, MSOUT
AIN → PBOUT = 580mVrms = 0dB
Lo → Hi
Hi → Lo
Rev.5, Oct. 1999, page 65 of 69
Page 66
HA12215F
40
30
20
MS Amp. Gain vs. Frequency
VS = ±7.0V
MAOUT
Gain (dB)
10
0
−10
500
VS = ±7.0V, f = 5kHz, MSOUT
AIN → PBOUT = 580mVrms
0dB
−10dB
−20dB
100
MSIN
100101k10k100k
Frequency (Hz)
No-Signal Sensing Time vs. Resistance
10
No-Signal Sensing Time (ms)
1
Rev.5, Oct. 1999, page 66 of 69
PBOUT
MSOUT
C13
0.33µ
14V
CC
R13
100k1M
Resistance R13 (Ω)
Page 67
100
VS = ±7.0V, f = 5kHz, MSOUT
AIN → PBOUT = 580mVrms
0dB
−10dB
−20dB
10
HA12215F
Signal Sensing Time vs. Capacitance
PBOUT
Signal Sensing Time (ms)
1
MSOUT
14V
C13
R13
330k
0.010.10.5
Capacitance C13 (µF)
CC
Rev.5, Oct. 1999, page 67 of 69
Page 68
HA12215F
Package Dimensions
12.8 ± 0.3
10.0
42
29
43
12.8 ± 0.3
56
1
± 0.08
*0.32
0.30 ± 0.06
0.7750.775
0.13
M
0.35
0.10
*Dimension including the plating thickness
Base material dimension
14
28
15
+0.1
2.20
−0.09
0.1
0.65
2.54 Max
± 0.04
0.15
*0.17 ± 0.05
Hitachi Code
JEDEC
EIAJ
Weight
(reference value)
0.60
Unit: mm
1.40
0°− 8°
± 0.15
FP-56
0.5 g
Rev.5, Oct. 1999, page 68 of 69
Page 69
HA12215F
Disclaimer
1. Hitachi neither warrants nor grants licenses of any rights of Hitachi’s or any third party’s patent,
copyright, trademark, or other intellectual property rights for information contained in this document.
Hitachi bears no responsibility for problems that may arise with third party’s rights, includ ing
intellectual property rights, in connection with u se of the information contained in this document.
2. Products and product specifications may be subject to change without notice. Confirm that you have
received the latest product standards or specifications before final design, purchase or use.
3. Hitachi makes every attempt to ensure that its products are of high quality and reliability. However,
contact Hitachi’s sales office before using the product in an application that demands especially high
quality and reliability or where its failure or malfunction may directly threaten human life or cause risk
of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation,
traffic, safety equipment or medical equipment for life support.
4. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly
for maximum rating, operating supply voltage range, heat radiation characteristics, installation
conditions and other characteristics. Hitachi bears no responsibility for failure or damage when used
beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable
failure rates or failure modes in semiconductor devices and employ systemic measures such as failsafes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other
consequential damage due to operation of the Hitachi product.
5. This product is not designed to be radiation resistant.
6. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without
written approval from Hitachi.
7. Contact Hitachi’s sales office for any questions regarding this document or Hitachi semiconductor
products.
Sales Offices
Hitachi, Ltd.
Semiconductor & Integrated Circuits.
Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan
Tel: Tokyo (03) 3270-2111 Fax: (03) 3270-5109
Hitachi Semiconductor
(America) Inc.
179 East Tasman Drive,
San Jose,CA 95134
Tel: <1> (408) 433-1990
Fax: <1>(408) 433-0223
Europe: http://www.hitachi-eu.com/hel/ecg
Asia : http://sicapac.hitachi-asia.com
Japan: http://www.hitachi.co.jp/Sicd/indx.htm
Hitachi Europe GmbH
Electronic Components Group
Dornacher Straße 3
D-85622 Feldkirchen, Munich
Germany
Tel: <49> (89) 9 9180-0
Fax: <49> (89) 9 29 30 00
Hitachi Europe Ltd.
Electronic Components Group.
Whitebrook Park
Lower Cookham Road
Maidenhead
Berkshire SL6 8YA, United Kingdom
Tel: <44> (1628) 585000
Fax: <44> (1628) 585160
Hitachi Asia Ltd.
Hitachi Tower
16 Collyer Quay #20-00,
Singapore 049318
Tel : <65>-538-6533/538-8577
Fax : <65>-538-6933/538-3877
URL : http://www.hitachi.com.sg
Hitachi Asia Ltd.
(Taipei Branch Office)
4/F, No. 167, Tun Hwa North Road,
Hung-Kuo Building,
Taipei (105), Taiwan
Tel : <886>-(2)-2718-3666
Fax : <886>-(2)-2718-8180
Telex : 23222 HAS-TP
URL : http://www.hitachi.com.tw
Hitachi Asia (Hong Kong) Ltd.
Group III (Electronic Components)
7/F., North Tower,
World Finance Centre,
Harbour City, Canton Road
Tsim Sha Tsui, Kowloon,
Hong Kong
Tel : <852>-(2)-735-9218
Fax : <852>-(2)-730-0281
URL : http://www.hitachi.com.hk
Copyright Hitachi, Ltd., 2000. All rights reserved. Printed in Japan.
Colophon 2.0
Rev.5, Oct. 1999, page 69 of 69
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