STV5342 Datasheet, PDF (1/20 Pages) STMicroelectronics – TELETEXT DECODER WITH 4 INTERGATED PAGES

STV5342
TELETEXT DECODER WITH 4 INTEGRATED PAGES
. _{COMPLETE TELETEXT DECODER INCLUD-}
. ^{ING ON-CHIP 4 PAGES MEMORY, REDUC-}
ING EMC RADIATIONS
UPWARD SOFTWARE AND HARDWARE
COMPATIBLE WITH PREVIOUS SGS-THOM-
SON’s DECODER SDA5243
. AUTOMATIC SELECTION OF UP TO SIX NA-
TIONAL LANGUAGES
. _{4 SIMULTANEOUS PAGE REQUESTS}
. _{DISPLAY OF THE 25TH STATUS ROW}
. _{MICROPROCESSOR CONTROL VIA AN I}²_C
BUS (SLAVE ADDRESS 0010001 R/W)
. DATA ACQUISITION AVAILABLE FROM
LINES 2 TO 22 OR FROM A COMPLETE
FIELD
. HIGH QUALITY DISPLAY USING A CHARAC-
TER MATRIX OF 12 x 10 DOTS
. _{SINGLE + 5V SUPPLY VOLTAGE}
. _{ON-CHIP MASK PROGRAMMABLE ROM}
CHARACTER GENERATORS
. _{HCMOS PROCESS}
DIP40
(Plastic Package)
ORDER CODE : STV5342
PIN CONNECTIONS
V_{D D}
1
40
2
39
3
38
RESERVED
4
37
5
36
TTD
6
35
TTC
7
34
DESCRIPTION
The STV5342 is a HCMOS integrated circuit which
performs all the processing of logical data within a
625 lines system teletext decoder. It is designed to
operate in conjunction with one-chip : the SAA5231
integrated chip which extracts Teletext information
embedded in a composite video signal. Up to 4
pages of display data can be stored in internal
memory. A complete system also comprises a mi-
croprocessor controlling the STV5342 via a 2-wires
serial bus. An on-chip ROM memory contains the
character sets. The STV5342 performs automatic
selection of one of up to six natural languages. Data
bytes may be decoded in either 7-Bit plus parity or
in full 8-Bit formats. The chip set also supports
facilities for reception and display of higher-level
protocol data.
ODD/EVEN
8
F6
9
VCS
10
S AN D
11
TCS/ SCS
12
R
13
G
14
B
15
COR
16
BL AN
17
Y
18
SCL
19
SDA
20
33
32
31
RESERVE D
30
29
28
27
26
25
24
23
22
21
V _SS
April 1994
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