SC sc3610 Service Manual

Silan Semiconductors

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FREQUENCY AND CLOCK DISPLAY DRIVER

DESCRIPTION

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The SC3610 is a frequency and clock display driver used for displaying FM/AM radio frequency or a 12 hour alarm clock. By using CMOS technology, it consumes very low power in clock display mode.

FEATURES

* FM input with pre-scalar for radio frequency up to 150 MHz * AM input for radio frequency up to 30 MHz * 3 common, 13 segment, 1/3 bias LCD display drivers which

supports 4 digits LCD display * On chip oscillator for external 32.768kHz crystal * 10.7 MHz / 70 kHz I.F. frequency offset for FM signal and 455kHz

I.F. frequency offset for AM signal * Internal real time clock in 12 hour display mode * Selectable clock or frequency display * 1.8V to 3.3V supply voltage

BLOCK DIAGRAM

SC3610

QFP-48-12x12-0.8

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ORDERING INFORMATIOM

SC3610A QFP-48-12x12-0.8 Package SC3610B QFP-44-10x10-0.8 Package SC3610C SC3610D

COB Package (QFP Type) COB Package (SOP Type)

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DD

FM

AM

AM/FM_SEL

IF

RANGE

AVDDV

AMP

IN

I

AMP

N

70K

TIMMINGCTL

SS

V

AV

PRESCALER

DIV. BY 10

COM1

COM2

COM3

SEG0

SEG1

SEG2

SEG3

SEG4

SEG5

SEG6

SEG7

SEG8

SEG9

SEG10

SEG11

SEG12

LCD DRIVER

IF FREQ

OFFSET

M U X

IN

TEST

OUT

OSC

TESTCLK

COUNTER

CLOCK

PR SET

MIN SET

AL DISP

AL ON/OFF

LCD

V

CLKFREQ-SEL

RST

AL-SIG AL-OUT

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.0 2000.12.31

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PAD ASSIGNMENT

SC3610A (QFP-48-12x12-0.8 Package)

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SC3610

RANGE

NC

36 35 34 33 32 31 30 29 28 27 26 25

37AM/FM-SEL 38

AV

DD

39

AM

IN

SS

AV

40 41

FM

IN

V

42

DD

43

V

SS

COM1

44 45

COM2

46

COM3

47

SEG0

48

NC

1 2 3 4 5 6 7 8 9 10 11 12

NC

SEG1

SC3610B (QFP-44-10x10-0.8 Package)

RANGE

33 32 31 30 29 28 27 26 25 24 23

34

NC

AV

AM AV

FM

V COM1 COM2 COM3

SEG0

35

DD

36

IN

37

SS

38

IN

39

DD

40 41 42 43 44

1 2 3 4 5 6 7 8 9 10 11

NC

AM/FM-SEL

NC

SEG2

NC

SEG1

70K

IF

SC3610A

SEG3

70K

AL-OUT

IF

SC3610B

SEG3

SEG2

AL-OUT

SEG4

SEG5

VSSAL-SIG

SEG5

VSSAL-SIG

SEG6

CLKFREQ-SEL

SEG6

CLKFREQ-SEL

SEG7

NC

SEG7

NC

SEG8

HR-SET

SEG8

HR-SET

SEG9

MIN-SET

SEG9

MIN-SET

SEG10

NC

SEG10

NC

24 23 22 21 20 19 18 17 16 15 14 13

NC

22 21 20 19 18 17 16 15 14 13 12

AL-DISP AL-ON/OFF TEST TESTCLK RST V

SS LCD

V OSC

OUT

OSC

IN

SEG12 SEG11 NC

AL-DISP AL-ON/OFF TEST TESTCLK RST

LCD

V OSC

OUT

OSC

IN

SEG12 SEG11 NC

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.0 2000.12.31

2

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Silan Semiconductors

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SC3610C (COB Package, QFP Type)

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SC3610

RANGE

30 29 28 27 26 25 24 23 22 21

31AM/FM-SEL

AV

DD

32

AM

IN

33

SS

AV

34

FM

IN

35

V

DD

36 37

COM1

38

COM2

39

COM3

40

SEG0

1 2 3 4 5 6 7 8 9 10

SEG1

SC3610D (COB Package, SOP Type)

1

COM1

2

COM2 COM3

3

SEG0

4 5

SEG1

6

SEG2 SEG3

7

SEG4

8

SEG5

9

SEG6

10

SEG7

11

SEG8

12

SEG9

13

SEG10

14 15

SEG11 SEG12

16

OSC

IN

17

OSC

OUT

18

70K

IF

NC

SC3610C

SEG3

SEG2

SC3610D

AL-OUT

SEG4

SEG5

VSSAL-SIG

SEG6

CLKFREQ-SEL

SEG7

HR-SET

NC

SEG9

SEG8

DD

36

V

35

FM

SS

34

V AM

33

AM/FM-SEL

32 31

RANGE NC

30

70K

29

IF

28

AL-OUT AL-SIG

27 26

CLKFREQ-SEL

25

NC

24

HR-SET

23

MIN-SET AL-DISP

22

AL-ON/OFF

21

RST

20

V

LCD

19

MIN-SET

SEG10

IN

20

AL-DISP

19

AL-ON/OFF

18

TEST

17

TESTCLK

16

RST

15

V

14

OSC

13

OSC

12

SEG12

11

SEG11

LCD

OUT IN

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.0 2000.12.31

3

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Silan Semiconductors

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ABSOLUTE MAXIMUM RATING

Characteristic Symbol Value Unit

Supply Voltage V Input or Output Voltage V Storage Temperature T ESD Protection -2 ~ + 2 kV

DD

V

OUT

IN,

STG

0.5 ~ 7.0 V

-0.5~VDD+0.5 V

-40 ~ +125

ELECTRICAL CHARACTERISTICS

Parameter Symbol Test Conditions Min Typ Max Unit

Supply Voltage V

VDD Supply Current Consumption

Internal LCD Reference Voltage V LCD Drive Current consumption I LCD Frame Frequency F Oscillator Frequency F FM Input Frequency F AM Input Frequency F FM Input impedance R AM Input impedance R Open Drain Low Level Voltage VOLoc VDD=3V, Isink =10mA -- -- 0.5 V Low Level Input Voltage V High Level Input Voltage V Low Level Output Voltage, VOLVDD=3V, Isink=4mA -- -- 0.4 V High Level Output Voltage V Schmitt Trigger Positive Threshold Vt+ VDD=3V -- 2.3 2.4 V Schmitt Trigger Negative Threshold Vt- VDD=3V 0.6 0.9 -- V Schmitt Trigger Input Resistance R Reset Pin pull-up Resistance R

(V

=3V,Temp=25°C , unless otherwise specified)

DD

I

frequency mode -- 1.8 3.6 mA

DD1

I

clock mode -- 55 110

DD2

respect to VDD 2 2.25 2.5 V

LCD

all segments on -- -- 5

LCD

LCD OSC

FMVIN

AMVIN IN(FM)FFM IN(AM)FAM

IL

IH

OHVDD

IN+/-

IN-UP

=0.3V

PP

=0.3V

PP

=120MHz -- 150 -=12MHz -- 2.0 --

=3V, I

pull-up or pull-down -- 75 --

=-4mA VDD-0.5 -- -- V

SOURCE

11.0 -- 150 MHz

0.7V

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

4

SC3610

°C

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-- 32 -- Hz

-- 32.768 -- kHz

0.5 -- 30 MHz

-- -- 0.3V

-- -- V

DD

-- 750 --

Rev: 1.0 2000.12.31

DD

µA

kΩ

kΩ kΩ

Ω

V

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Silan Semiconductors

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PAD DESCRIPTION

Pad

No.

1 VDD -- Supply voltage

2 ~ 4 COM1 ~ COM3 OL LCD common drive signal for driving LCD display

5 ~ 17 SEG0 ~ SEG12 OL LCD segment drive signal for driving LCD display

18 OSCI I 32.768 kHz crystal oscillator input pin 19 OSCO O 32.768 kHz crystal oscillator output pin

20 V

21 RST ISU 22 TESTCLK ISD For testing use only with internal pull-down 23 TEST ISD When high, the chip will enter test mode 24 AL-ON/OFF ISU Alarm function on or off in toggle mode. Internal pull up input 25 AL-DISP ISU When pressed, will display the alarm time. Internal pull up input

26 MIN-SET ISU

27 HR-SET ISU Hoursetting for time and alarm(together with AL-DISP). Internal pull up. 28 NC -- No connection

29 CLKFREQ-SEL ISD

30 V 31 AL-SIG 32 AL-OUT O4 Alarm output at 1kHz with 0.2 sec on and 0.2 sec off, push-pull output. 33 IF70k ISD Select IF offset in FM mode. H:70kHz, L:10.7kHz 34 NC -- No connection 35 RANGE ISU For frequency counting mode only, Range = H or L, gate time = 0.1S 36 AM/FM-SEL ISU AM/FM mode selection. High for AM and low for FM, internal pull-up. 37 AV 38 AM 39 AV 40 FM

Note: I Oscillator Input Pad O Oscillator Output Pad

Symbol I/O Description

LCD Supply voltage. Connects a 0.1 µF capacitor between this pin and

LCD

SS

DD

IN

SS

IN

ISU Schmitt trigger input pad with pull-up OD10 Open Drain with 10mA output driving ISD Schmitt trigger input pad with pull-down O4 Push-pull output pad with 4mA driving

O

V

SS

Active low power-on reset with pull-up resistor of approx.750kΩ

Minute setting for time and alarm(together w ith AL-DISP). Internal pull up.

Clock or frequency display mode. Internal pull-down input. When low, clock will be displayed. When high, radio frequency will be displayed.

-- Ground pin Open drain alarm signal output, active low.

OD10

-- Analog Supply voltage

-- AM signal input, 0.3V peak to peak, 500kHz to 30MHz.

-- Analog Ground pin.

-- FM signal input, 0.3V peak to peak, 11-150MHz.

OL LCD segment and common output pad

SC3610

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.0 2000.12.31

5

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SC sc3610 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual