datasheet SC3610 datasheet

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)



DD

FM

AM

AM/FM_SEL

IF

RANGE

AVDDV

AMP

IN

I

AMP

N

70K

TIMMINGCTL

SS

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

OSC

TESTCLK

COUNTER

CLOCK

PR SET

MIN SET

AL DISP

AL ON/OFF

LCD

V

CLKFREQ-SEL

RST

AL-SIG
AL-OUT

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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

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

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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

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

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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

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

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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

µA

kΩ

kΩ
kΩ

Ω

V

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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

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FUNCTIONAL DESCRIPTION

1. RADIO FREQUENCY DISPLAY OPERATION (DTS MODE):

The FM and AM local oscillator output generated from the external RF receiver enters a high gain input
comparator through the FM
dynamic pre-scalar. Depending on the state of the AM/FM-SEL pin, the FM and AM signal will be selected and
enters the IF frequency offset block. Depending on the FM/AM selection, 10.7MHz/70kHz or 455kHz I.F.
frequency will be subtracted or added from the input signal.

LCD Display Range:

Mode Range Display range (on LCD) Step Resolution

FM H

AM H

Note:1 When counter frequency overflow, MSB will not be displayed.

IF Offset for different application:

IF70K AMFM-

0 0 +10.7MHz Display FM input frequency 10.7MHz
0 1 +455kHz Display AM input frequency 455kHz
1 0 -70 kHz* Display FM input frequency +70kHz
1 1 +455 kHz Display AM input frequency 455kHz

* Suitable to use with Silan SC1088

and the AMINpins respectively. The FM signal then routes through a divide-by-10

IN

L

L

SEL

11.00 MHz to 99.99 MHz

11.00 MHz to 149.9 kHz
500 kHz to 9999 kHz

0.5 MHz to 29.99 MHz

IF Offset Operation

10kHz

100kHz

1kHz

10kHz

SC3610

1kHz

10kHz

100kHz

1kHz

2. CLOCK FUNCTION:

1) The clock will be advanced in the following flow:
PM 12:00 → PM 11:59 → AM 12:00 → 11:59

2) The [:] sign is the second indicator and will blink at a rate of 2Hz

3) TIME SETTING:

-- Pressing the keys combination of [TIME SET] [HR SET] or [TIME SET] [MIN SET] will enter the time
setting mode.

-- One digit will be incremented afte r enter in g the alarm sett in g mode. Keep pressing the keys

combination for more than 0.5 seconds will make the digit to be advanced at a rate of 2Hz.

4) ALARM TIME SETTING:

-- Pressing the keys combination of [AL DISP] [HR SET] or [AL DISP] [MIN SET] will enter the alarm time
setting mode. The [AL] indicator will turn on and the [:] sign will stop blinking.

-- One digit will be incremented after entering the alarm setting mode. Keep pressing the keys combination

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for more than 0.5 seconds will make the digit to be advanced at a rate of 2Hz.

5) ALARM FUNTION:

-- AL OUT output pin will output an alarm frequency of 1024Hz at 0.2 sec on and 0.2 sec off.

-- ALOUTpincanbeusedtodirectdriveapiezobuzzer.

-- When alarm is active, AL OUT output can be disabled by pressing the [AL-ON/OFF] key or it will turn
off automatically after 3 minutes lapse.

-- AL-SIGpinisanopendrainoutput(activelow).Oncealarmisactivated,AL-SIGcanbedisabledby

pressing [AL-ON/OFF] key or it will turn off automatically after one hour time lapse.

-- When [AL DISP] is pressed, alarm setting time will be displayed on the LCD and the [AL] indicator will

be on.

-- The [AL-ON/OFF] pin will toggle the [

indicator is on, alarm function is on.

6) 32.768kHz crystal is used for the reference frequency.

7) After Power-on-reset (RST):

-- [HR SET] and [MIN SET] keys will be disabled.

-- [AL-DISP] KEY,[AL-ON/OFF] KEY AND AL-SIG output will be enabled.

] indicator to turn on of off the alarm function. When the

3. After POWER-ON-SET(RST):

-- When in clock mode, it will display and start at AM 7:00.

-- When in DTS frequency mode, if CLKFREQ-SEL = High, and FM
segments will be turned on(LCD test mode).

&AMINpins are grounded, all LCD

IN

4. LCD pin configuration and 0 to 9 digits segments display configuration.

Pin Function LCD Mapping

1 COM1 COM1 -- -­2 COM2 -- COM2 -­3 COM3 -- -- COM3
4 SEG0 kHz MHz
5 SEG1 AL DIG1-c DIG1-b
6 SEG2 DIG1-d DIG1-g DIG1-a
7 SEG3 DP1 DIG1-e DIG1-f
8 SEG4 DP2 DIG2-c DIG2-b
9 SEG5 DIG2-d DIG2-g DIG2-a

10 SEG6 : DIG2-e DIG2-f

SC3610

(To be continued)

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(Continued)

Pin Function LCD Mapping

11 SEG7 AM DIG3-c DIG3-b
12 SEG8 DIG3-d DIG3-g DIG3-a
13 SEG9 -- DIG3-e DIG3-f
14 SEG10 FM DIG4-c DIG4-b
15 SEG11 DIG4-d DIG4-g DIG4-a
16 SEG12 PM DIG34-e DIG4-f

PIN16

LCD TIMING WAVEFORMS

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One Cycle

COL

2134

DP2 DP1

SC3610

PIN1

a

S1

b

f

g

cde

One Cycle

VDD

VLCD 1/3

COM1

VLCD 2/3

VLCD

VDD

VLCD 1/3

COM2

VLCD 2/3

VLCD

VDD

VLCD 1/3

COM3

VLCD 2/3

VLCD

VDD

VLCD 1/3

SEGX.

VLCD 2/3

VLCD

SEGX.
COM1

ON

SEGX.

COM2

ON

SEGX.
COM3

ON

SEGX.

COM1

ON

SEGX.
COM2

ON

SEGX.
COM3

ON

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SUGGESTED APPLICATION

AM Local
Oscillator

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500kHz 30MHz

AM Local Oscillator

Frequency

Clock
Buffer

SC3610

AMIN

Radio

Frequency

Receiver

FM Local
Oscillator

TYPEICAL LCD LAYOUT

Counter Only Mode

PIN COM1 COM2 COM3

1COM1-- -­2--COM2-­3----COM3
4kHzMHzS1
5AL1C1B
61D1G1A
7 DP1 1E 1F
8 DP2 2C 2B

92D2G2A
10 COL 2E 2F
11 AM 3C 3B
12 3D 3G 3A
13 -- 3E 3F
14 FM 4C 4B
15 4D 4G 4A
16 PM 4E 4F

11MHz 150MHz

FM Local Oscillator

Frequency

Clock
Buffer

PIN16

SC3610

FMIN

COL

DP2 DP1

LCD

PIN1

S1

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Clock and Counter Mode

PIN COM1 COM2 COM3

1COM1-- --

2--COM2--

3----COM3

4kHzMHzTK

5TS1C1B

61D1G1A

71P1E1F

82P2C2B

92D2G2A
10 COL 2E 2F
11 -- 3C 3B
12 3D 3G 3A
13 S1 3E 3F
14 FM 4C 4B
15 4D 4G 4A
16 PM 4E 4F
17 AM
18 AL
19 MW
20 LW
21 SW



s1 AL

D S
SW AM

MW FM
LW PM

PIN21

SC3610

a

f

g

e

c

4321

d

AM

MW

stereo

COL

b

1P2P

LW

SW

MHz

KHz

TK

TS

PIN1

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TYPICAL APPLICATION CIRCUITS (1)

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SC3610

12345678910111213141516

COM1

COM2

COM3

SEG0

SEG1

SEG2

SEG3

SEG4

SEG5

SEG6

SEG7

LCD DRIVER

OUT

OSC

32.768kHz

IF
FREQ
OFFSET

IN

OSC

PRESCALER

DIV. BY 10

M
U

X

TEST

TESTCLK

20pF 20pF

SEG8

SEG9

COUNTER

PR SET

SEG10

SEG11

CLOCK

MIN SET

SEG12

LCD

V

0.1µF

V

CLKFREQ-SEL

4.7kΩ

RST

0.1µF

AL-SIG

AL-OUT

AL DISP

AL ON/OFF

DD

1MΩ

10uf10nf

FM

AM

AM/FM-SEL

70K

IF

RANGE

V

DD

AVDDV

DD

IN

AMP

I

N

AMP

TIMMING CTL

SS

SS

V

AV

4 - DIGITS LCD DISPLAY

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TYPICAL APPLICATION CIRCUITS (2)

3V

0.1µF

0.1µF

10kΩ1.8nF

0.1µF

reset

5.6kΩ

14

16

Search

Tuning

R

S

&

1

V3

MUTE

AF

2

Audio Out

-1

V2

10nF

AF



VP

680pF

BB910

10kΩ

82pF

68pF

220pF

11

12

5

4

VCO

V2

SC1088

Loop filter

V1

Mixer

2.2k 2. 2k

V2

VP

Demodulator

6k

76

8 139 10

5k

6k

IF Limiter

5.4k

Allpass

Filter

315

SC3610

2pF

9018

9018

20kΩ

220Ω

2pF

100kΩ

0.1µH 2pF

3.3nF
180pF

3.9nF
330pF

0.1µF

RUN

470pF

0.1µF
10kΩ

9013

9013

0.1µF

10kΩ

470kΩ

100kΩ

330kΩ

9012

10µF

0.1µF

CLKFREQ

70K

-SEL

On/Off

Alarm

AL-ON

/OFF

DISP

Alarm

Set

Time

Set

0.1µF

AL-

SET

HR-

MIN-

SET

MINHR

RST

202324222126

OSC

IN
17

32768Hz

VSSIF

AM/FM-SEL

OSC

OUT

18

NC

RANGE

SC3610D

AL-OUT

AL-SIG

NC

302827

Buzzer

A

MINVLCD

COM1

MIN

COM2

COM3

321

VDDF

SEG 12
SEG 11
SEG 10

SEG 9
SEG 8
SEG 7
SEG 6
SEG 5
SEG 4
SEG 3
SEG 2
SEG 1
SEG 0

16 15 14

13 12 11 10 9 8 7 6 5 4

FM

MHz

36

351933

25

31

323334

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CHIP TOPOGRAPHY



SC3610

33

3435

303132 29

28

2627

36
37
38
39
40

25
24
23
22

21
1
2
3
4
5

6

7 8 109

Chip Size: 2.72mmx2.88mm

12 13 14 15

11

20

19

18

17

16

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PAD COORDINATES

PAD NO. X Y PAD NO. X Y

1 -70 925 21 70 -925
2 -205 925 22 205 -925
3 -340 925 23 340 -925
4 -475 925 24 475 -925
5 -615 925 25 610 -925
6 -890 615 26 890 -615
7 -890 475 27 890 -475
8 -890 340 28 890 -340

9 -890 205 29 890 205
10 -890 70 30 890 -70
11 -890 -70 31 890 70
12 -890 -205 32 890 205
13 -890 -340 33 890 340
14 -890 -475 34 890 475
15 -890 -615 35 890 610
16 -615 -925 36 615 925
17 -475 -925 37 475 925
18 -340 -925 38 340 925
19 -205 -925 39 205 925
20 -70 -925 40 70 925

Note: The original point of the coordinate is the die center.

(Unit: µm)

SC3610

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PACKAGE OUTLINE

QFP-48-12x12-0.8 UNIT: mm

SC3610

17.20+-0.40

12.0+-0.2

36 25

37

48

1.6

0.30+-0.06 0.8

24

12.0+-0.2

17.2+-0.4

13

121

2.7

2.6+-0.2

1.8+-0.2

0.15+-0.05



QFP-44-10x10-0.8 UNIT: mm

13.6+-0.4

10.0+-0.2

33 23

34

1.8+-0.2

22

2.7

10.0+-0.2

13.6+-0.4

1.0
1

0.35+-0.10 0.8

1244

11

0.8+-0.2

0.15+-0.05



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COB PACKAGE (QFP TYPE) UNIT: mm

SC3610

23.0+-1.0

23.0+-1.0

1.7781.27 0.7

2.0 MAX

10.0 MAX

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COB PACKAGE (SOP TYPE) UNIT: mm

23.0+-1.0

2.0 MAX

10.0 +- 0.5

1.27

7.0 MAX

0.5

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HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.0 2000.12.31

16

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