M491B datasheet(1/16 Pages) STMICROELECTRONICS

номер детали	M491B

подробное описание детали	SINGLE-CHIP VOLTAGE SYNTHESIS TUNING SYSTEM WITH 1 ANALOG CONTROL

PDF	16 Pages

Scroll/Zoom	100%

производитель	STMICROELECTRONICS [STMicroelectronics]

домашняя страница	http://www.st.com

Logo

1 / 16 page

M491B

SINGLE-CHIP VOLTAGE SYNTHESIS TUNING SYSTEM

WITH 1 ANALOG CONTROL

September 1992

.

16-STATION MEMORY - 7-SEGMENT LED

DISPLAY

.

VOLTAGE SYNTHESIZER : 13 BITS

.

4-BAND PRESET CAPABILITY

.

NON-VOLATILE MEMORY : 304 BITS

- 16 WORDS OF 19 BITS FOR TUNING VOLT-

AGE (13 bits) - BAND (2 bits) - FINE DETUN-

ING (4 bits)

- 10

4 MODIFY CYCLES PER WORD

- MIN 10 YEARS DATA RETENTION

.

PCM REMOTE CONTROL RECEIVER : DE-

CODES SIGNAL TRANSMITTED BY M708

.

VOLUME D/A : 6-BIT RESOLUTION / 8kHz

.

MEMORY SKIP FUNCTION

.

AUTOMATIC SEARCH WITH DIGITAL AFT

CONTROL

.

FINE DETUNING D/A ACTING ON AFT DIS-

CRIMINATOR (16 steps) WITH SEPARATE

STORAGE FOR EACH MEMORY POSITION.

ALTERNATIVELY IT CAN BE USED TO CON-

TROL BRIGHTNESS OR COLOUR SATURA-

TION

.

MANUAL SEARCH WITH DIGITAL AFT CON-

TROL

.

MANUAL SEARCH WITH LINEAR AFT

.

SWEEP SEARCH DISPLAY OUTPUT

.

SUPPLY VOLTAGES : VDD = + 5V,

VPP = + 25V FOR THE MEMORY

.

CLOCK OSCILLATOR : 445 TO 510kHz

.

INTEGRATED DIGITAL POWER ON RESET

(no external initialization circuitry required)

DIP40

(Plastic Package)

ORDER CODE : M491B1

DESCRIPTION

The M491B is a monolithic N-MOS LSI circuit in-

cluding a Floating-gate Non-Volatile Memory for

storage of up to 16 stations. Tuning of the station

is performed with a 8192 step D/A converter, using

the principle of voltage synthesis. It is designed for

7-segment LED displays. Direct memory selection

is possible only from remote control while Up/Down

memory scanning is possible on the set and also

from remote control. An option input for 8 or 16

stations is available. The circuit also includes a

PCM remote control receiver operating in conjunc-

tion with the transmitter M708. The highly reliable

transmission code ensures error-free signal detec-

tion even in presence of high noise conditions.

Search of the station is possible in automatic or

manual modes. The circuit can operate with a

Digital or Linear AFT control. The Digital AFT mode

is necessary for automatic search and requires an

external circuit (TDA4433 or equivalent, e.g. dual

comparator plus TV station detector) to convert the

AFC-S-curve into an Up/Down command. Fine tun-

ing (detuning) is also possible with different modes

of operation. The circuit is assembled in 40-pindual

in-line plastic package.

1

2

3

4

5

6

7

8

9

10

11

12

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

13

14

15

16

17

18

19

20

24

23

22

21

(GND)

MEMORY SUPPLY

MEMORY TIMING

FINE TUNING D/A

TUNING D/A

DIGITAL AFT STATUS

OSC. IN

OSC. OUT

TEST

AFT 1

AFT 2

SWEEP DISPLAY OUT

VOLUME D/A

DIGITAL AFT EN.

V3

V2

V1

X4

X3

X2

X1

MAINS ON OPTION

MAINSON/OFF

SEGM. a

SEGM. b

SEGM.c

SEGM. d

OPT. 8/16

SEGM. e

SEGM.f

SEGM. g

SEGM.h + i

UHF

CATV

VHF III

VHF I

V

S S

V

DD

V

SS

(GND)

LINEAR AFT DEF.

I.R. INPUT

PIN CONNECTIONS

1/16

Аналогичный номер детали - M491B

производитель	номер детали	датащи	подробное описание детали
STMicroelectronics	M491B	1Mb / 23P	SINGLE CHIP VOLTAGE SYNTHESIS TUNING SYSTEMS WITH 1 ANALOG CONTROL

More results

Аналогичное описание - M491B

производитель	номер детали	датащи	подробное описание детали
NEC	UPD17016	1Mb / 324P	4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DIGITAL TUNING SYSTEM HARDWARE
	UPD17072	1Mb / 226P	4-BIT SINGLE-CHIP MICROCONTROLLER WITH HARDWARE FOR DIGITAL TUNING SYSTEM
	UPD17933	1,022Kb / 252P	4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DIGITAL TUNING SYSTEM HARDWARE
STMicroelectronics	M494	223Kb / 22P	SINGLE-CHIP VOLTAGE TUNING SYSTEM WITH 4 ANALOG CONTROLS AND mP INTERFACE June 1991
Toshiba Semiconductor	TC9309F-107	159Kb / 4P	SINGLE CHIP DIGITAL TUNING SYSTEM FOR CD RADIO SYSTEM
Toshiba Semiconductor	TC9321F-006	180Kb / 6P	SINGLE CHIP DIGITAL TUNING SYSTEM FOR CAR CD
Sanyo Semicon Device	LC75396NE	471Kb / 19P	Single-Chip Electronic Volume Control System
STMicroelectronics	M490B	1Mb / 23P	SINGLE CHIP VOLTAGE SYNTHESIS TUNING SYSTEMS WITH 1 ANALOG CONTROL
ATMEL Corporation	ATSAM9743	156Kb / 21P	Sound Synthesis Single-chip Music System
Renesas Technology Corp	PD17012	1Mb / 320P	4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DIGITAL TUNING SYSTEM HARDWARE

More results

M491B датащи(PDF) 1 Page - STMicroelectronics

M491B датащи(HTML) 1 Page - STMicroelectronics

Аналогичный номер детали - M491B

Аналогичное описание - M491B

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

датащи скачать

ссылки URL