Datasheet UPD3788D Datasheet (NEC)

Page 1
DATA SHEET
MOS INTEGRATED CIRCUIT
µ
PD3788
7300 PIXELS × 3 COLOR CCD LINEAR IMAGE SENSOR
The µPD3788 is a high-speed and high sensitive color CCD (Charge Coupled Device) linear image sensor which
changes optical images to electrical signal and has the function of color separation.
µ
The transfer register, which transfers the photo signal electrons of 7300 pixels separately in odd and even pixels. Moreover, the spectral response characteristics of the µPD3788 is modified from the previous device µPD3728 to be suitable for Xe-lamp. Therefore, it is suitable for 600 dpi/A3 high-speed color digital copiers and so on.

FEATURES

• Valid photocell : 7300 pixels × 3
• Photocell pitch : 10 µm
2
µ
• Photocell size : 10 × 10
• Line spacing : 40 µm (4 lines) Red line-Green line, Green line-Blue line
• Color filter : Primary colors (red, green and blue), pigment filter (with light resistance 107 lx•hour)
• Resolution : 24 dot/mm (600 dpi) A3 (297 × 420 mm) size (shorter side)
• Drive clock level : CMOS output under 5 V operation
• Data rate : 40 MHz MAX. (20 MHz/1 output)
• Output type : 2 outputs in phase/color
• Power supply : +12 V
• On-chip circuits : Reset feed-through level clamp circuits
Voltage amplifiers

ORDERING INFORMATION

Part Number Package
µ
PD3788D CCD linear image sensor 36-pin ceramic DIP (15.24 mm (600))
m
The information in this document is subject to change without notice. Before using this document, please confirm that this is the latest version. Not all devices/types available in every country. Please check with local NEC representative for availability and additional information.
Document No. S14664EJ1V0DS00(1st edition) Date published June 2000 N CP(K) Printed in Japan
©
2000
Page 2

COMPARISON CHART

µ
PD3788
Item ABSOLUTE MAXIMUM Shift register clock voltage (V) –0.3 to +8 –0.3 to +15 RATINGS Reset gate clock voltage (V) –0.3 to +8 –0.3 to +15
Reset feed-through level clamp clock voltage (V) –0.3 to +8 –0.3 to +15
Transfer gate clock voltage (V) –0.3 to +8 –0.3 to +15 ELECTRICAL Saturation exposure (Ix·s) Red TYP. 0.36 0.35 CHARACTERISTICS Green TYP. 0.37 0.39
Blue TYP. 0.80 0.31
Response (V/Ix·s) Red MIN. 3.85 3.9
TYP. 5.5 5.6
MAX. 7.15 7.3
Green MIN. 3.78 3.6
TYP. 5.4 5.1
MAX. 7.02 6.6
Blue MIN. 1.75 4.5
TYP. 2.5 6.4
MAX. 3.25 8.3
Response peak (nm) Red TYP. 645 630
Green TYP. 540 540
Blue TYP. 445 460
Random noise test conditions tcp = 20 ns t7 = 150 ns TIMING CHART t3 (ns) MIN. 17 20
t7 (ns) MIN. 17 20
t10 (ns) MIN. –20 –10
tCP (ns) MIN. 5
TYP. 150 – STANDARD TOTAL SPECTRAL modified – CHARACTERISTIC RESPONSE CHARACTERISTICS CURVES
µ
PD3788
µ
PD3728
2
Data Sheet S14664EJ1V0DS00
Page 3

BLOCK DIAGRAM

20
φ
CLB 1L GND
30
φφφ
29
φ
28
16
23
µ
PD3788
21
24
GND
V
OUT
2
(Blue, even)
GND
V
OUT
1
(Blue, odd) GND
OUT
3
V (Green, odd)
V
OUT
4
(Green, even) GND
OUT
6
V (Red, even)
GND
V
OUT
5
(Red, odd)
31
32
CCD analog shift register
Transfer gate
33
. . . . . . . . . .
D27
D128
S1
Photocell
S2
(Blue)
Transfer gate
34
CCD analog shift register
35
36
CCD analog shift register
Transfer gate
. . . . . . . . . .
D27
D128
S1
Photocell
S2
(Green)
Transfer gate
1
CCD analog shift register
2
3
CCD analog shift register
Transfer gate
4
. . . . . . . . . .
D27
D128
S1
Photocell
S2
(Red)
Transfer gate
5
CCD analog shift register
S7300
S7299
S7300
S7299
S7300
S7299
D129
D129
D129
D134
D134
D134
TG1
φ
22
(Blue)
TG2
φ
21
(Green)
φ
TG3
15
(Red)
GND
6
8
7
OD
V
RB
9
φ
10
Data Sheet S14664EJ1V0DS00
13 14
φφφ
12
3
Page 4

PIN CONFIGURATION (Top View)

CCD linear image sensor 36-pin ceramic DIP (15.24 mm (600))
•µPD3788D
V
1
OUT
Output signal 4 (Green, even)
4
36
V
Output signal 3 (Green, odd)
OUT
3
µ
PD3788
Ground
Output signal 6 (Red, even)
Ground
Output signal 5 (Red, odd)
Ground
Output drain voltage
Reset gate clock
Shift register clock 10
No connection No connection
No connection Shift register clock 1 Shift register clock 2
Transfer gate clock 3 (for Red)
GND
V
GND
V
GND
φ
φ
OUT
OUT
V
OD
RB
φ
10
NC NC NC
φ φ
TG3
2
1
1
Red
1
Blue
Green
3
6
4 5
5
6 7 8 9
10 11 12
1
13
2
14 15
35 34 33 32 31 30 29 28
27 26 25 24 23 22
GND V
OUT
GND V
OUT
GND
φ
CLB
φ
1L
φ
20
NC NC NC 2
φ
1
φ φ
TG1
Output signal 1 (Blue, odd)
1
Ground Output signal 2 (Blue, even)
2
Ground Reset feed-through level
clamp clock Last stage shift register clock 1
Shift register clock 20
No connection No connection No connection Shift register clock 2 Shift register clock 1 Transfer gate clock 1 (for Blue)
Ground
Ground No connection No connection
GND
NC NC
16 17 18
7300
7300
7300
21 20 19
φ
Transfer gate clock 2 (for Green)
TG2
No connection
NC
No connection
NC

PHOTOCELL STRUCTURE DIAGRAM PHOTOCELL ARRAY STRUCTURE DIAGRAM

(Line spacing)
10 m
7 m
µ
Aluminum shield
µ
10 m
3
m
µ
Channel stopper
µ
10 m
µ
10 m
µ
Blue photocell array
(40 m)
Green photocell array
(40 m)
Red photocell array
4 lines
µ
4 lines
µ
4
Data Sheet S14664EJ1V0DS00
Page 5
µ
PD3788
ABSOLUTE MAXIMUM RATINGS (TA = +25 °C)
Parameter Symbol Ratings Unit Output drain voltage VOD –0.3 to +15 V Shift register clock voltage V Reset gate clock voltage V Reset feed-through level clamp clock voltage V Transfer gate clock voltage V
φ
1, Vφ1L, Vφ10, Vφ2, Vφ20 –0.3 to +8 V
φ
RB –0.3 to +8 V
φ
CLB –0.3 to +8 V
φ
TG1
to V
φ
TG3 –0.3 to +8 V
Operating ambient temperature TA –25 to +60 °C Storage temperature Tstg –40 to +100 °C
Caution Exposure to ABSOLUTE MAXIMUM RATINGS for extended periods may affect device reliability;
exceeding the ratings could cause permanent damage. The parameters apply independently.
RECOMMENDED OPERATING CONDITIONS (TA = +25 °C)
Parameter Symbol MIN. TYP. MAX. Unit Output drain voltage VOD 11.4 12.0 12.6 V Shift register clock high level V Shift register clock low level V Reset gate clock high level V Reset gate clock low level V Reset feed-through level clamp clock high level V Reset feed-through level clamp clock low level V Transfer gate clock high level
Note
Transfer gate clock low level V Data rate 2f
φ
1H, Vφ1LH, Vφ10H, Vφ2H, Vφ20H 4.5 5.0 5.5 V
φ
1L, Vφ1LL, Vφ10L, Vφ2L, Vφ20L –0.3 0 +0.5 V
φ
RBH 4.5 5.0 5.5 V
φ
RBL –0.3 0 +0.5 V
φ
CLBH 4.5 5.0 5.5 V
φ
CLBL –0.3 0 +0.5 V
V
φ
TG1H
to V
φ
TG3H 4.5 Vφ1H Vφ1H V
φ
TG1L
to V
φ
TG3L –0.3 0 +0.5 V
φ
RB 2 40 MHz
(V
φ
10H)(Vφ10H)
Note When Transfer gate clock high level (V
Image lag can increase.
φ
Remark Pin 9 (
10) and pin 28 (φ20) should be open to decrease the influence of input clock noise to output signal
waveform, in case of operating at low or middle speed range; data rate under 24 MHz or so.
φ
TG1H to VφTG3H) is higher than Shift register clock high level (Vφ1H (Vφ10H)),
Data Sheet S14664EJ1V0DS00
5
Page 6

ELECTRICAL CHARACTERISTICS

µ
PD3788
TA = +25 °C, VOD = 12 V, f
φ
RB = 1 MHz, data rate = 2 MHz, storage time = 10 ms, input signal clock = 5 Vp-p,
light source: 3200 K halogen lamp +C-500S (infrared cut filter, t = 1mm) +HA-50 (heat absorbing filter, t = 3mm)
Parameter Symbol Test Conditions MIN. TYP. MAX. Unit Saturation voltage Vsat 1.5 2.0 V Saturation exposure Red SER 0.36 lxs
Green SEG 0.37 lxs Blue SEB 0.80 lxs
Photo response non-uniformity PRNU VOUT = 1 V 6 18 %
Note 1
Note 1
Note 1
Note 1
Green RG 3.78 5.4 7.02 V/lxs Blue RB 1.75 2.5 3.25 V/lxs
Note 3
Green 540 nm Blue 445 nm
Note 2
ADS1 Light shielding 1.0 5.0 mV ADS2 0.5 5.0 mV DSNU1 Light shielding 2.0 5.0 mV DSNU2 1.0 5.0 mV
IL1 VOUT = 1 V 2.0 5.0 % IL2 1.0 5.0 % VOS 4.0 5.0 6.0 V td VOUT = 1 V 20 ns
data rate = 40 MHz
DR11 Vsat/DSNU1 1000 times DR12 Vsat/DSNU2 2000 times DR21 Vsat/σbit1 2000 times DR22 Vsat/σbit2 4000 times RFTN Light shielding –500 +200 +500 mV
σbit1 Light shielding, bit clamp 1 .0 mV σbit2 mode (tcp = 20 ns) 0.5 mV σline1 Light shielding, line 4.0 mV σline2 clamp mode (t19 = 3 µs) 2.0 mV
Average dark signal
Dark signal non-uniformity
Power consumption P W 600 800 mW Output impedance ZO 0.3 0.5 k Response Red RR 3.85 5.5 7.15 V/lxs
Image lag
Offset level Output fall delay time Register imbalance RI VOUT = 1 V 0 4.0 % Total transfer efficiency TTE VOUT = 1 V, 95 98 %
Response peak Red 645 nm
Dynamic range
Reset feed-through noise Random noise
Note 1
Note 2
Notes 1. ADS1, DSNU1, IL1, DR11, DR21, σbit1 and σline1 show the specification of VOUT1 and VOUT2.
ADS2, DSNU2, IL2, DR12, DR22, σbit2 and σline2 show the specification of VOUT3 to VOUT6.
2. Refer to TIMING CHART 2, 5.
φ
3. When the fall time of
6
1L (t2’) is the TYP. value (refer to TIMING CHART 2, 5).
Data Sheet S14664EJ1V0DS00
Page 7
INPUT PIN CAPACITANCE (TA = +25 °C, VOD = 12 V)
Parameter Symbol Pin name Pin No. MIN. TYP. MAX. Unit
Shift register clock pin capacitance 1 C
Shift register clock pin capacitance 2 C
Last stage shift register clock pin capacitance C Reset gate clock pin capacitance C Reset feed-through level clamp clock pin capacitance C Transfer gate clock pin capacitance C
φ
1
φ
2
φ
L
φ
RB
φ
CLB
φ
TG
µ
PD3788
φ
1 13 350 500 pF
23 350 500 pF
φ
10 9 350 500 pF
φ
2 14 350 500 pF
24 350 500 pF
φ
20 28 350 500 pF
φ
1L 29 10 pF
φ
RB 8 10 pF
φ
CLB 30 10 pF
φ
TG1 22 100 pF
φ
TG2 21 100 pF
φ
TG3 15 100 pF
Remark Pins 13, 23 (φ1) and pin 9 (φ10) are connected each other inside of the device.
Pins 14, 24 (φ2) and pin 28 (φ20) are connected each other inside of the device.
Data Sheet S14664EJ1V0DS00
7
Page 8
8

TIMING CHART 1 (Bit clamp mode, for each color)

φ
TG1 to
φ
TG3
1 ( 10)
φ
φ
2 ( 20)
φ
φ
φ
1L
Data Sheet S14664EJ1V0DS00
φ
RB
φ
CLB
V
OUT
1, 3, 5
V
OUT
2, 4, 6
Note Input the
Note Note
91113
7
101214
8
1517192123
1618202224
25
26
27
28
29
30
Optical black
(96 pixels)
119
121
123
125
120
122
124
126
Invalid photocell
(6 pixels)
127
128
129
131132
130
Valid photocell
(7300 pixels)
7425
7427
7429
7431
7426
7428
7430
7432
Invalid photocell
(6 pixels)
7433
7434
7435
7436
7437
7438
φ
RB and
135
246
φ
CLB pulses continuously during this period, too.
µ
PD3788
Page 9

TIMING CHART 2 (Bit clamp mode, for each color)

t1 t2
µ
PD3788
1 ( 10)
φ
2 ( 20)
φ
φ
OUT
V
V
φ
φ
φ
φ
RB
CLB
1 to
OUT
1L
90 %
10 %
90 %
10 %
90 %
10 %
t1'
90 %
10 %
t5 t6
t3
t10
90 %
t4
t2'
cp
t
t11
t9t8
t7
10 %
t
d
6
RFTN
V
OS
10 %
Symbol MIN. TYP. MAX. Unit t1, t2 0 50 ns t1’, t2’ 0 5 ns t3 17 50 ns t4 5 200 ns t5, t6 0 20 ns t7 17 150 ns t8, t9 0 20 ns t10 –20 t11 –5
Note 1
Note 2
+50 ns +50 ns
tcp 5 150 ns
Data Sheet S14664EJ1V0DS00
9
Page 10
Notes 1. MIN. of t10 shows that the φRB and φCLB overlap each other.
µ
PD3788
90 %
t10
φ
RB
φ
CLB
90 %
2. MIN. of t11 shows that the φ1L and φCLB overlap each other.
φ
φ
1L
CLB
t11
90 %
90 %
10
Data Sheet S14664EJ1V0DS00
Page 11

TIMING CHART 3 (Bit clamp mode, for each color)

1 ( 10)
2 ( 20)
2 V or more 2 V or more
2 ( 20)
1L
2 V or more 0.5 V or more
φ
φ
φ
φ
φ
φ
φ
µ
PD3788
t12 t14t13
TG1 to TG3
φ
φ
1 ( 10)
2 ( 20)
φ
φφ
φφφ
RB
φ
CLB
1L
90 % 10 %
t15
90 %
Note 1
Symbol MIN. TYP. MAX. Unit t11 –5 t12 3000 10000 ns t13, t14 0 50 ns t15, t16 900 1000 ns
Note 2
+50 ns
t16
90 %
t11
90 %
Notes 1. Input the φRB and φCLB pulses continuously during this period, too.
2. MIN. of t11 shows that the φ1L and φCLB overlap each other.
t11
90 %
90 %
φ
1 (φ10), φ2 (φ20) cross points
φ
φ
1L
CLB
φ
1L, φ2 (φ20) cross points
Remark Adjust cross points (φ1 (φ10), φ2 (φ20)) and (φ1L, φ2 (φ20)) with input resistance of each pin.
Data Sheet S14664EJ1V0DS00
11
Page 12
12

TIMING CHART 4 (Line clamp mode, for each color)

φ
TG1 to
φ
TG3
φφ
1 ( 10)
φφφ
2 ( 20)
1L
Data Sheet S14664EJ1V0DS00
φ
RB
CLB
φ
V
OUT
1, 3, 5
V
OUT
2, 4, 6
Note Set the
Remark Inverse pulse of the
Note Note
135
246
φ
RB to high level during this period.
φ
TG1 to φTG3 can be used as
7
8
91113
101214
1517192123
1618202224
25
26
φ
CLB.
27
29
28
30
Optical black
(96 pixels)
119
121
123
125
120
122
124
126
Invalid photocell
(6 pixels)
127
128
129
131132
130
Valid photocell
(7300 pixels)
7425
7427
7429
7431
7426
7428
7430
7432
Invalid photocell
(6 pixels)
7433
7434
7435
7436
7437
7438
µ
PD3788
Page 13

TIMING CHART 5 (Line clamp mode, for each color)

t1 t2
µ
PD3788
φ
1( 10)
φ
φ
φφ
2( 20)
φ
φ
φ
φ
CLB
V
OUT
V
OUT
φ
1L
RB
1 to
90 %
10 %
90 %
10 %
90 %
10 %
t1'
“H”
6
90 %
10 %
t5 t6
t3
RFTN
t4
t2'
t
d
V
OS
10 %
Symbol MIN. TYP. MAX. Unit
t1, t2 0 50 ns t1’, t2’ 0 5 ns t3 17 50 ns t4 5 200 ns t5, t6 0 20 ns
Data Sheet S14664EJ1V0DS00
13
Page 14

TIMING CHART 6 (Line clamp mode, for each color)

µ
PD3788
φ
φ
TG1 to TG3
1 ( 10)
φ
2 ( 20)
φ
φφφ
φ
φ
RB
CLB
1L
t12
90 % 10 %
t15
90 %
90 %
90 % 10 %
t20 t21
Symbol MIN. TYP. MAX. Unit t12 3000 10000 ns t13, t14 0 50 ns t15, t16 900 1000 ns t17, t18 100 1000 ns t19 200 t12 ns t20, t21 0 20 ns
Note
t19
t14t13
t16
t18t17
Note Set the φRB to high level during this period.
φ
Remark Inverse pulse of the
φ
1 (φ10), φ2 (φ20) cross points
1 ( 10)
φφφ
2 V or more 2 V or more
2 ( 20)
φφ
TG1 to φTG3 can be used as φCLB.
φ
1L, φ2 (φ20) cross points
2 ( 20)
φ
1L
φ
2 V or more 0.5 V or more
Remark Adjust cross points (φ1 (φ10), φ2 (φ20)) and (φ1L, φ2 (φ20)) with input resistance of each pin.
14
Data Sheet S14664EJ1V0DS00
Page 15
µ
PD3788

DEFINITIONS OF CHARACTERISTIC ITEMS

1. Saturation voltage: Vsat Output signal voltage at which the response linearity is lost.
2. Saturation exposure: SE Product of intensity of illumination (I
3. Photo response non-uniformity: PRNU The output signal non-uniformity of all the valid pixels when the photosensitive surface is applied with the light of uniform illumination. This is calculated by the following formula.
X) and storage time (s) when saturation of output voltage occurs.
PRNU (%) =
4. Average dark signal: ADS Average output signal voltage of all the valid pixels at light shielding. This is calculated by the following formula.
ADS (mV) =
x
× 100
x
x : maximum of x
x = x
V
OUT
Register Dark
DC level
7300
d
j
Σ
j=1
7300
j
: Dark signal of valid pixel number j
d
j
x
7300
x
j
Σ
j=1
7300
j
: Output voltage of valid pixel number j
x
x
Data Sheet S14664EJ1V0DS00
15
Page 16
5. Dark signal non-uniformity: DSNU Absolute maximum of the difference between ADS and voltage of the highest or lowest output pixel of all the valid pixels at light shielding. This is calculated by the following formula.
DSNU (mV) : maximum of d
ADS
j = 1 to 7300
j
dj : Dark signal of valid pixel number j
V
OUT
ADS
Register Dark
DC level
DSNU
µ
PD3788
6. Output impedance: Z
O
Impedance of the output pins viewed from outside.
7. Response: R Output voltage divided by exposure (Ix
s).
Note that the response varies with a light source (spectral characteristic).
8. Image lag: IL The rate between the last output voltage and the next one after read out the data of a line.
φ
TG
Light
OUT
V
V IL (%) = ×100
V
OUT
ON OFF
V
1
V
OUT
1
16
Data Sheet S14664EJ1V0DS00
Page 17
µ
PD3788
9. Register imbalance: RI The rate of the difference between the averages of the output voltage of Odd and Even pixels, against the average output voltage of all the valid pixels.
n 2
2
(V2j – 1 V2j)
n
RI (%) =
j = 1
1
n
j = 1
n
V j
×100
n : Number of valid pixels
j : Output voltage of each pixel
V
10. Random noise: σ Random noise σ is defined as the standard deviation of a valid pixel output signal with 100 times (=100 lines) data sampling at dark (light shielding).
100
(Vi – V)
σ (mV) = , V =
Σ
i=1
2
100
i: A valid pixel output signal among all of the valid pixels for each color
V
OUT
1
100
100
Σ
i=1
Vi
V
1
V
2
V
100
line 1V
line 2
line 100
This is measured by the DC level sampling of only the signal level, not by CDS (Correlated Double Sampling).
Data Sheet S14664EJ1V0DS00
17
Page 18

STANDARD CHARACTERISTIC CURVES (Nominal)

DARK OUTPUT TEMPERATURE
CHARACTERISTIC
8
4
2
1
0.5
Relative Output Voltage
0.25
STORAGE TIME OUTPUT VOLTAGE
CHARACTERISTIC (T
2
1
Relative Output Voltage
0.2
A = +25 °C)
µ
PD3788
0.1 100 20304050
Operating Ambient Temperature T
(without infrared cut filter and heat absorbing filter) (T
100
80
60
40
Response Ratio (%)
20
B
0.1 1510
A(°C) Storage Time (ms)
TOTAL SPECTRAL RESPONSE CHARACTERISTICS
R
G
A
= +25 °C)
B
G
18
0
400
500 600
Wavelength (nm)
Data Sheet S14664EJ1V0DS00
700 800
Page 19

APPLICATION CIRCUIT EXAMPLE

µ
PD3788
+5 V
+
µµ
10 F/16 V 0.1 F
B4
B6
B5
47
φ
RB
2
2
2
φ φ
2 2
PD3788
µ
1
V
OUT
4
2
GND
3
OUT
6
4 5
OUT
5
6
GND
7
V
OD
8
φφ
RB
9
φφ
10 20
10
NC NC
11
NC
12
NC
13
1
φ
14
φ
2
15
TG3
φ φ φ
16
GND
17
NC
18
NC
36
V
OUT
3
35
GND
34
V
OUT
1V
33
GNDGND
32
V
OUT
2V
31
GND
30
φ
CLB
29
1L
28
27 26
NC
25
NC
24
φ
2
23
φ
1
22
TG1
21
TG2
φ
20
NC
19
NC
B3
B1
B2
47 47
2
2
2 2 2
+
47 F/25 V0.1 F
µ
µ
µµ
10 F/16 V0.1 F
10
+
φ
+12 V
+5 V
CLB
1 TG
Remarks 1. Pin 9 (φ10) and pin 28 (φ20) should be open to decrease the influence of input clock noise to output
signal waveform, in case of operating at low or middle speed range; data rate under 24 MHz or so.
2. The inverters shown in the above application circuit example are the 74AC04.
Data Sheet S14664EJ1V0DS00
19
Page 20
µ
PD3788
B1 to B6 EQUIVALENT CIRCUIT
4.7 k
CCD V
OUT
47
2SA1005
110
+12 V
2SC945
47 F/25 V
µ
+
µ
0.1 F
1 k
20
Data Sheet S14664EJ1V0DS00
Page 21

PACKAGE DRAWING

CCD LINEAR IMAGE SENSOR 36-PIN CERAMIC DIP (15.24mm (600))
(Unit : mm)
94.00±0.50
1
9.5±0.9
14.99±0.3
2
(35.0)
The 1st valid pixel
(4.33)
15.24
µ
PD3788
1.27±0.05
0.46±0.05
88.9±0.6
1 The 1st valid pixel The center of the pin1 2 The 1st valid pixel The center of the package (Reference) 3 The surface of the chip The top of the glass cap (Reference) 4 The bottom of the package The surface of the chip
2.54
20.32
3.50±0.5
0.97±0.3
3.30±0.35
Name Dimensions Refractive index
Glass cap 93.0 × 13.6 × 1.0 1.5
(2.33)
2.0±0.3
0.25±0.05
3
4
Data Sheet S14664EJ1V0DS00
36D-1CCD-PKG1-2
21
Page 22
µ
PD3788

NOTES ON THE USE OF THE PACKAGE

The application of an excessive load to the package may cause the package to warp or break, or cause chips to
come off internally. Particular care should be taken when mounting the package on the circuit board.
When mounting the package, use a circuit board which will not subject the package to bending stress, or use a
socket.
Note
For this product, the reference value for the three-point bending strength however, on the inside portion as viewed from the face on which the window (glass) is bonded to the package body (ceramic).
Note Three-point bending strength test
Distance between supports: 70 mm, Support R: R 2 mm, Loading rate: 0.5 mm / min.
Load Load
is 300 [N]. Avoid imposing a load,
70 mm 70 mm
22
Data Sheet S14664EJ1V0DS00
Page 23
NOTES FOR CMOS DEVICES
1 PRECAUTION AGAINST ESD FOR SEMICONDUCTORS
Note: Strong electric field, when exposed to a MOS device, can cause destruction of the gate oxide and ultimately degrade the device operation. Steps must be taken to stop generation of static electricity as much as possible, and quickly dissipate it once, when it has occurred. Environmental control must be adequate. When it is dry, humidifier should be used. It is recommended to avoid using insulators that easily build static electricity. Semiconductor devices must be stored and transported in an anti-static container, static shielding bag or conductive material. All test and measurement tools including work bench and floor should be grounded. The operator should be grounded using wrist strap. Semiconductor devices must not be touched with bare hands. Similar precautions need to be taken for PW boards with semiconductor devices on it.
2 HANDLING OF UNUSED INPUT PINS FOR CMOS
Note: No connection for CMOS device inputs can be cause of malfunction. If no connection is provided to the input pins, it is possible that an internal input level may be generated due to noise, etc., hence causing malfunction. CMOS devices behave differently than Bipolar or NMOS devices. Input levels of CMOS devices must be fixed high or low by using a pull-up or pull-down circuitry. Each unused pin should be connected to V being an output pin. All handling related to the unused pins must be judged device by device and related specifications governing the devices.
DD or GND with a resistor, if it is considered to have a possibility of
µ
PD3788
3 STATUS BEFORE INITIALIZATION OF MOS DEVICES
Note: Power-on does not necessarily define initial status of MOS device. Production process of MOS does not define the initial operation status of the device. Immediately after the power source is turned ON, the devices with reset function have not yet been initialized. Hence, power-on does not guarantee out-pin levels, I/O settings or contents of registers. Device is not initialized until the reset signal is received. Reset operation must be executed immediately after power-on for devices having reset function.
Data Sheet S14664EJ1V0DS00
23
Page 24
µ
PD3788
The information in this document is current as of May, 2000. The information is subject to change without notice. For actual design-in, refer to the latest publications of NEC's data sheets or data books, etc., for the most up-to-date specifications of NEC semiconductor products. Not all products and/or types are available in every country. Please check with an NEC sales representative for availability and additional information.
No part of this document may be copied or reproduced in any form or by any means without prior written consent of NEC. NEC assumes no responsibility for any errors that may appear in this document.
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Descriptions of circuits, software and other related information in this document are provided for illustrative purposes in semiconductor product operation and application examples. The incorporation of these circuits, software and information in the design of customer's equipment shall be done under the full responsibility of customer. NEC assumes no responsibility for any losses incurred by customers or third parties arising from the use of these circuits, software and information.
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NEC semiconductor products are classified into the following three quality grades: "Standard", "Special" and "Specific". The "Specific" quality grade applies only to semiconductor products developed based on a customer-designated "quality assurance program" for a specific application. The recommended applications of a semiconductor product depend on its quality grade, as indicated below. Customers must check the quality grade of each semiconductor product before using it in a particular application. "Standard": Computers, office equipment, communications equipment, test and measurement equipment, audio
and visual equipment, home electronic appliances, machine tools, personal electronic equipment and industrial robots
"Special": Transportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster
systems, anti-crime systems, safety equipment and medical equipment (not specifically designed for life support)
"Specific": Aircraft, aerospace equipment, submersible repeaters, nuclear reactor control systems, life
support systems and medical equipment for life support, etc. The quality grade of NEC semiconductor products is "Standard" unless otherwise expressly specified in NEC's data sheets or data books, etc. If customers wish to use NEC semiconductor products in applications not intended by NEC, they must contact an NEC sales representative in advance to determine NEC's willingness to support a given application. (Note) (1) "NEC" as used in this statement means NEC Corporation and also includes its majority-owned subsidiaries. (2) "NEC semiconductor products" means any semiconductor product developed or manufactured by or for
NEC (as defined above).
M8E 00. 4
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