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Part: LC7442
Category:
Analog & Mixed-Signal Processing
Description: Pip Controller
Company: Sanyo Semiconductor Corporation
Datasheet: Download LC7442 datasheet File size : 702 kB
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Datasheet text preview:
Ordering number : EN4412A
CMOS IC
LC7442, 7442E
PIP Controller
Overview
The LC7442 and LC7442E are memory controller for PIP (picture-in-picture) systems for TV sets and VCRs. Since this IC includes 3 built-in D/A converter circuits on chip, a component-type PIP system can be constructed by c o m b i n i n g this product with memory and an A/D converter such as the LC7480.
· Operating power supply voltage: 5 V ±10% · Package: QIP64E, DIP64S
Notes 1.When aspect correction is not performed
D/A clock Y R-Y B-Y 15.00 MHz 3.75 MHz 3.75 MHz
Features
· Horizontal resolution: 600 TV lines*1 · Three built-in D/A converter provided on-chip in the PIP memory controller block · High image quality display provided by vertical filter function frame display*2 · Built-in even/odd field determination circuit · Built-in PLL circuit (requires external LPF) · Handles NTSC/PAL, TV/VCR, and multi-mode systems (NTSC-PAL)*3 · Sub-screen specifications -- Display modes: 2-screen, 3-screen, and 4-screen*2 -- Display on/off and frame on/off/color switching, wipe function -- Supports switching between fixed (4 corners) and arbitrary (8-bit specification of vertical and horizontal position) display positions -- The size of the display area can be either variable or 1/9 of the main picture area, i.e 1/3 of the vertical and 1/3 of the horizontal dimensions of the screen -- Horizontal resolution of about 250 dots (Y signal) -- Gradations (quantization): 64 (6 bits)
2. The specifications vary with the external memory as listed in the table below.
Display 1 screen 2 screens 3 screens 4 screens screen in 2-screen mode.
O: Both dynamic and static images can be frame
Memory
256 k × × ×
1M
O O
Single-screen display consists of displaying only one
displayed : Only dynamic images can be frame displayed ×: Not possible
3. Multi-mode is only supported when 1M of external memory is provided. 4. See the separate "APPLICATION NOTE" document for details.
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
51795TH (OT) / 73093JN No. 4412-1/22
LC7442, 7442E
Package Dimensions
unit: mm 3071-DIP64S
[LC7442]
unit: mm 3159-QFP64E
[LC7442E]
SANYO: DIP64S
SANYO: QIP64E
Pin Assignments
No. 4412-2/22
LC7442, 7442E
Block Diagram
No. 4412-3/12
Others parts begin by lc
LC-1 LC-2 LC-3 LC-4 LC-5 LC-6 LC-7 LC-8 LC-9 LC-10 LC-11 LC-12 LC-13 LC-14 LC-15 LC-16 LC-17 LC-18 LC-19 LC-20 LC-21 LC-22 LC-23 LC-24 LC-25 LC-26 LC-27 LC-28 LC-29 LC-30 LC-31 LC-32 LC-33 LC-34
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