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參數資料
| 型號： | MC44002P |
| 廠商： | MOTOROLA INC |
| 元件分類： | 消費家電 |
| 英文描述： | CHROMA 4 VIDEO PROCESSOR |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP40 |
| 封裝： | PLASTIC, DIP-40 |
| 文件頁數： | 27/40頁 |
| 文件大小： | 491K |
| 代理商： | MC44002P |
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MC44002 MC44007
27
MOTOROLA ANALOG IC DEVICE DATA
PIN FUNCTION DESCRIPTION (continued)
Pin
Description
Equivalent Internal Circuit
22
23
24
VCC
0.1
μ
F
Vref
RGB Inputs
These external input signals to the color difference stages are ac
coupled into the IC via 0.1
μ
F capacitors. They have a clamp and
sync separator. The inputs should be driven from a source of less
than 1.0 k
output impedance with 700 mVpp signal levels.
25
Gnd
100 k
Y2 Input
Auxiliary external input to MC44002/7 which can be used in
conjunction with auxiliary color difference inputs and/or as a sync
input. The pin should be driven from a source of less than 1.0 k
output impedance with 700 mVpp luminance signal. The signal must
be ac coupled via an external 0.1
μ
F coupling capacitor. Internal
clamp and sync separator are provided.
26
27
VCC
Gnd
0.1
μ
F
Vref
100 k
B–Y and R–Y Inputs
Corrected color difference inputs from the MC44140. The signals are
ac coupled via 0.1
μ
F capacitors and are clamped internally. The
inputs should be driven from a source of less than 1.0 k
output
impedance.
28
VCC
Gnd
4.7
μ
F
YI Clamp
External capacitor used by the circuit which clamps the Y1 signal
output on Pin 29. A typical value is 4.7
μ
F.
29
Gnd
VCC
YI Output
The luminance, after passing through the filter and delay line/peaking
sections, is made available on this pin. It is also routed internally to
the color difference stages.
30
Gnd
VCC
To MC44140
30 k
System Select
A multilevel dc output controlled in software, which is used by the
MC44140 for system selection. Please refer to separate functional
description of the MC44140 chroma delay line.
31
Gnd
VCC
To MC44140
200
μ
A
Sandcastle
A special multilevel timing pulse derived in the MC44002/7 for use by
the MC44140. Please refer to separate function description of the
MC44140 chroma delay line.
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