saa5249 NXP Semiconductors, saa5249 Datasheet - Page 2

• Manufacturer Part Number: saa5249
• Description: Integrated Vip And Teletext With Background Memory Controller Ivt1.1bmcx
• Manufacturer: NXP Semiconductors

Philips Semiconductors
FEATURES
QUICK REFERENCE DATA
ORDERING INFORMATION
1996 Nov 07
V
I
V
V
f
T
SAA5249P/E
SAA5249GP/E
DD
XTAL
Complete teletext decoder featuring a background
memory controller in a single 48-pin DIP package.
Capable of storing of up to 512 teletext pages in an
external DRAM, giving instant access to the teletext
data
Automatic processing of extension packet 26 for widest
possible language decoding. All our standard language
options can be available, and the language option is
readable via I
100% hardware compatible with the SAA5247 plug-in
replacement and with the possibility of extra market in
those countries with packet 26 transmissions.
Still pin-aligned to SAA5254 and SAA5244A.
100% software compatible with the SAA5247, and
SAA5244A, except if the special OSD symbols were
used. Also 100% software compatible to SAA5254. In all
events there is a change to the ROM ID number.
The device is pin-aligned with the other members of the
new Philips teletext decoder family, i.e. SAA5281 and
the SAA5254, making one hardware solution for the
whole range
Low software overhead for the microprocessor
RGB interface to standard colour decoder ICs, push-pull
output drive.
amb
DD
syn
vid
Integrated VIP and Teletext with
Background Memory Controller
NUMBER
SYMBOL
TYPE
2
C-bus.
supply voltage
supply current
sync amplitude
video amplitude
crystal frequency
operating ambient temperature
QFP64
NAME
DIP48
plastic dual in-line package; 48 leads (600 mil)
plastic quad flat package; 64 leads (lead length 1.95 mm);
body 14
PARAMETER
20
2.7 mm; high stand-off height
DESCRIPTION
2
GENERAL DESCRIPTION
The Integrated VIP and Teletext (IVT1.1BMCX) is a
teletext decoder (contained within a single chip package)
for decoding 625-line based World System Teletext
transmissions. With its built-in background memory
controller the device can store incoming teletext packets in
the external 1M4 DRAM. With this large packet store
which can be rapidly scanned, we can achieve near
instantaneous access to all the pages transmitted by the
broadcaster.
This version of the decoder also contains some extra
hardware to process extension packet 26 automatically,
extending the markets to which the TV chassis can be
shipped and offering many more language options for the
set maker.
PACKAGE
4.5
0.1
0.7
20
MIN.
5.0
90
0.3
1.0
27
TYP.
Preliminary specification
5.5
120
0.6
1.4
+70
MAX.
SAA5249
SOT240-1
SOT319-1
VERSION
V
mA
V
V
MHz
C
UNIT