Philips saa5252 DATASHEETS

DATA SH EET

Product specification

Supersedes data of March 1995

File under Integrated Circuits, IC02

1996 Jul 18

INTEGRATED CIRCUITS

SAA5252

Line twenty-one acquisition and

display (LITOD)

1996 Jul 18 2

Philips Semiconductors Product specification

Line twenty-one acquisition and display (LITOD) SAA5252

FEATURES

• Complete ‘stand-alone’ Line 21 decoder in one package

• On-chip display RAM allowing full page Text mode

• Enhanced character display modes

• Full colour captions

• RGB interface for standard colour decoder ICs

• Automatic handling of Field 2 data

• Automatic selection of (1H, 1V), (2H, 1V) or (2H, 2V)

scan modes

• Onboard OSD facility using Character generator

• RGB inputs to support existing OSD ICs

• I

2

C-bus or ‘stand-alone’ pin control

• Automatic data-ready signal generation on data

acquisition

• Can decode signals recorded on standard VHS and

S-VHS tape.

GENERAL DESCRIPTION

The SAA5252 (LITOD) is a single-chip CMOS device,

which will acquire, decode and display Line 21 Closed

Captioning data from a 525-line composite video signal.

Operation as an On-Screen Display (OSD) device is also

possible. Normal and line progressive scan modes are

supported.

QUICK REFERENCE DATA

ORDERING INFORMATION

SYMBOL PARAMETER MIN. TYP. MAX. UNIT

V

DD

supply voltage 4.5 5.0 5.5 V

I

DD

supply current − 30 − mA

V

syn

CVBS sync amplitude 0.1 0.3 0.6 V

V

vid

CVBS video amplitude 0.7 1.0 1.4 V

T

amb

operating ambient temperature −20 − +70 °C

T

stg

storage temperature −55 − +125 °C

TYPE

NUMBER

PACKAGE

NAME DESCRIPTION VERSION

SAA5252P DIP24 plastic dual in-line package; 24 leads (600 mil) SOT101-1

SAA5252T SO24 plastic small outline package; 24 leads; body width 7.5 mm SOT137-1

1996 Jul 18 3

Philips Semiconductors Product specification

Line twenty-one acquisition and display (LITOD) SAA5252

BLOCK DIAGRAM

MBB623 - 1

CHARACTER

GENERATOR

ADDRESSING

CONTROL

CODE

INTERPRETER

AND

ADDRESSING

CHARACTER

ROM

DISPLAY

TIMING

ROUNDING

ITALICS

AND

RGB

MULTIPLEXOR

PAGE

RAM

17

16

15

14

13

9

10

11

12

I C

INTERFACE

2

SERIAL/

PARALLEL

AND

PARITY

SYNC SEPARATOR

AND

ACQUISITION TIMING

ADC

DATA

DETECTOR

OSCILLATOR

5

3

4

7 86

2

1

23

24

20

22

21

19 18

V

SS DD

V

VH

i.c.

RGBREF

BLAN

R

G

B

BLANIN

RIN

GIN

BIN

DR

SDA

SCL

I C/DC

2

OSCIN

OSCGND

OSCOUT

BLACK

IREF

CVBS

SAA5252

Fig.1 Block diagram.

1996 Jul 18 4

Philips Semiconductors Product specification

Line twenty-one acquisition and display (LITOD) SAA5252

PINNING

SYMBOL PIN DESCRIPTION

CVBS 1 composite video input; signal should be connected via a

100 nF capacitor

I

2

C/DC 2 input selects I

2

C or Direct Control

SDA 3 serial data port for I

2

C-bus or mode select input for

direct control

SCL 4 serial clock input for I

2

C-bus or mode select input for

direct control

DR 5 data-ready signal to microcontroller (active-LOW) or

mode select input for direct control

i.c. 6 internally connected; connect to V

SS

for normal

operation

V 7 vertical reference input for display timing

H 8 horizontal reference input for display timing

BLANIN 9 video blanking input from external OSD device

RIN 10 RED video input from external OSD device

GIN 11 GREEN video input from external OSD device

BIN 12 BLUE video input from external OSD device

B 13 BLUE video output

G 14 GREEN video output

R 15 RED video output

BLAN 16 video blanking output

RGBREF 17 input voltage defining output HIGH level for RGB pins

for closed captioning output

V

DD

18 +5 V supply

V

SS

19 0 V ground

OSCOUT 20 oscillator output

OSCIN 21 oscillator input

OSCGND 22 oscillator ground

BLACK 23 video black level storage input; connected to V

SS

via

100 nF capacitor

IREF 24 reference current input; connected to V

SS

via 27 kΩ

resistor

Fig.2 Pin configuration.

1

2

3

4

5

6

7

8

9

10

11

12

24

23

22

21

20

19

18

17

16

15

14

13

SAA5252

CVBS

SDA

SCL

DR

i.c.

V

H

BLANIN

RIN

GIN

BIN

B

G

R

BLAN

RGBREF

V

DD

V

SS

OSCOUT

OSCIN

OSCGND

BLACK

IREF

I C/DC

2

MBB622 - 1

1996 Jul 18 5

Philips Semiconductors Product specification

Line twenty-one acquisition and display (LITOD) SAA5252

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 134).

Notes

1. This maximum value has an absolute maximum of 6.5 V independent of V

DD

.

2. The human body model ESD simulation is equivalent to discharging a 100 pF capacitor via a 1.5 kΩ resistor, which

produces a single discharge transient. Reference

“Philips Semiconductors Test Method UZW-BO/FQ-A302 (similar

to MIL-STD 883C method 3015.7)”

.

3. The machine model ESD simulation is equivalent to discharging a 200 pF capacitor via a resistor and series inductor

with effective dynamic values of 25 Ω and 2.5 µH, which produces a damped oscillating discharge. Reference

“Philips Semiconductors Test Method UZW-BO/FQ-B302 (similar to EIAJ IC-121 Test Method 20 condition C)”

.

Quality

This device will meet the requirements of the

“Philips Semiconductors General Quality Specification UZW-BO/FQ-0601”

in accordance with

“Quality Reference Handbook (order number 9397 750 00192)”

. This details the acceptance criteria

for all Q & R tests applied to the product.

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

V

DD

supply voltage (all supplies) −0.3 +6.5 V

V

Imax

maximum input voltage (any input) note 1 −0.3 V

DD

+ 0.5 V

V

Omax

maximum output voltage (any output) note 1 − V

DD

+ 0.5 V

V

dif

difference between V

SS

and OSCGND −±0.25 V

I

IOK

DC input or output diode current −±20 mA

I

Omax

maximum output current (each output) −±10 mA

T

amb

operating ambient temperature −20 +70 °C

T

stg

storage temperature −55 +125 °C

V

es

electrostatic handling

human body model note 2 −2000 +2000 V

machine model note 3 −200 +200 V

1996 Jul 18 6

Philips Semiconductors Product specification

Line twenty-one acquisition and display (LITOD) SAA5252

CHARACTERISTICS

V

DD

= 5 to 5.5 V; V

SS

=0V; T

amb

= −20 to +70 °C; unless otherwise specified.

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Supplies

V

DD

supply voltage 4.5 5.0 5.5 V

I

DDtot

total supply current − 30 − mA

Inputs

CVBS (

PIN 1)

V

syn

sync voltage amplitude 0.1 0.3 0.6 V

V

vid(p-p)

video voltage amplitude

(peak-to-peak value)

0.7 1.0 1.4 V

V

dat

caption data voltage

amplitude

0.25 0.35 0.49 V

Z

source

source impedance −−250 Ω

V

I

input switching voltage level

of sync separator

1.7 2.0 2.3 V

Z

I

input impedance 2.5 5 − kΩ

C

I

input capacitance −−10 pF

IREF (PIN 24)

R

24

resistor to ground − 27 − kΩ

V

24

voltage on pin 24 −

1

⁄

2

V

DD

− V

H(PIN 8)

V

IL

LOW level input voltage −0.3 − +0.8 V

V

IH

HIGH level input voltage 2.0 − V

DD

+ 0.5 V

I

LI

input leakage current V

I

=0toV

DD

−10 − +10 µA

I

Imax

maximum input current −1 − +1 mA

C

I

input capacitance −−10 pF

t

r

pulse rise time −−5µs

t

f

pulse fall time −−5µs

t

W

pulse width

scan mode 1H 1 12 63 µs

scan mode 2H 1 6 31 µs

V(

PIN 7)

V

IL

LOW level input voltage −0.3 − +0.8 V

V

IH

HIGH level input voltage 2.0 − V

DD

+ 0.5 V

I

LI

input leakage current V

I

=0toV

DD

−10 − +10 µA

I

Imax

maximum input current −1 − +1 mA

C

I

input capacitance −−10 pF

t

r

pulse rise time −−5ns

t

f

pulse fall time −−5ns

t

W

pulse width 1 −−µs