Silan
Semiconductors
FREQUENCY AND CLOCK
DISPLAY DRIVER
DESCRIPTION
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.
SC3610
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
QFP-48-12x12-0.8
ORDERING INFORMATIOM
SC3610A
SC3610B
SC3610C
SC3610D
QFP-48-12x12-0.8 Package
QFP-44-10x10-0.8 Package
COB Package (QFP Type)
COB Package (SOP Type)
BLOCK DIAGRAM
SEG10
SEG11
SEG12
COM1
COM2
COM3
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
AV
DD
V
DD
LCD DRIVER
V
LCD
IF
FM
IN
AMP
PRESCALER
DIV. BY 10
FREQ
OFFSET
AM
I
N
COUNTER
CLKFREQ-SEL
AMP
RST
AM/FM_SEL
IF
70K
AL-SIG
RANGE
TIMMING CTL
M
U
X
CLOCK
AL-OUT
MIN SET
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
2000.12.31
1
AL ON/OFF
TESTCLK
OSC
OUT
AL DISP
PR SET
TEST
AV
SS
V
SS
OSC
IN
Silan
Semiconductors
PAD ASSIGNMENT
SC3610A (QFP-48-12x12-0.8 Package)
CLKFREQ-SEL
MIN-SET
SC3610
HR-SET
AL-OUT
RANGE
AL-SIG
IF
70K
V
SS
NC
NC
NC
36 35 34 33 32 31 30 29 28 27 26 25
AM/FM-SEL 37
AV
DD
38
AM
IN
39
AV
SS
40
FM
IN
41
V
DD
42
V
SS
43
COM1 44
COM2 45
COM3 46
SEG0 47
NC 48
1
NC
2
SEG1
3
SEG2
4
SEG3
5
SEG4
6
SEG5
7
SEG6
8
SEG7
9
SEG8
10 11 12
SEG10
SEG9
NC
24 AL-DISP
23 AL-ON/OFF
22 TEST
21 TESTCLK
20 RST
SC3610A
NC
19 V
SS
18 V
LCD
17 OSC
OUT
16 OSC
IN
15 SEG12
14 SEG11
13 NC
SC3610B (QFP-44-10x10-0.8 Package)
CLKFREQ-SEL
MIN-SET
HR-SET
AL-OUT
RANGE
AL-SIG
IF
70K
V
SS
NC
NC
33 32 31 30 29 28 27 26 25 24 23
NC 34
AM/FM-SEL 35
AV
DD
36
AM
IN
37
AV
SS
38
FM
IN
39
V
DD
40
COM1 41
COM2 42
COM3 43
SEG0 44
1
NC
2
SEG1
3
SEG2
4
SEG3
5
SEG4
6
SEG5
7
SEG6
8
SEG7
9
SEG8
10 11
SEG9
SEG10
22 AL-DISP
21 AL-ON/OFF
20 TEST
19 TESTCLK
18 RST
SC3610B
NC
17 V
LCD
16 OSC
OUT
15 OSC
IN
14 SEG12
13 SEG11
12 NC
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
2000.12.31
2
Silan
Semiconductors
SC3610C (COB Package, QFP Type)
CLKFREQ-SEL
SC3610
MIN-SET
20 AL-DISP
19 AL-ON/OFF
18 TEST
17 TESTCLK
16 RST
15 V
LCD
14 OSC
OUT
13 OSC
IN
12 SEG12
11 SEG11
1
SEG1
2
SEG2
3
SEG3
4
SEG4
5
SEG5
6
SEG6
7
SEG7
8
SEG8
9
SEG9
10
SEG10
HR-SET
AL-OUT
RANGE
AL-SIG
IF
70K
V
SS
NC
30 29 28 27 26 25 24 23 22 21
AM/FM-SEL 31
AV
DD
32
AM
IN
33
AV
SS
34
FM
IN
35
V
DD
36
COM1 37
COM2 38
COM3 39
SEG0 40
SC3610C
SC3610D (COB Package, SOP Type)
COM1
COM2
COM3
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
OSC
IN
OSC
OUT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
NC
36
35
34
33
32
31
30
29
V
DD
FM
IN
V
SS
AM
IN
AM/FM-SEL
RANGE
NC
IF
70K
AL-OUT
AL-SIG
CLKFREQ-SEL
NC
HR-SET
MIN-SET
AL-DISP
AL-ON/OFF
RST
V
LCD
SC3610D
28
27
26
25
24
23
22
21
20
19
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
2000.12.31
3
Silan
Semiconductors
ABSOLUTE MAXIMUM RATING
Characteristic
Supply Voltage
Input or Output Voltage
Storage Temperature
ESD Protection
SC3610
Symbol
V
DD
V
IN,
V
OUT
T
STG
Value
0.5 ~ 7.0
-0.5
~
V
DD
+0.5
-40 ~ +125
-2 ~ + 2
Unit
V
V
°C
kV
ELECTRICAL CHARACTERISTICS
Parameter
Supply Voltage
VDD Supply Current Consumption
I
DD2
Internal LCD Reference Voltage
LCD Drive Current consumption
LCD Frame Frequency
Oscillator Frequency
FM Input Frequency
AM Input Frequency
FM Input impedance
AM Input impedance
Open Drain Low Level Voltage
Low Level Input Voltage
High Level Input Voltage
Low Level Output Voltage,
High Level Output Voltage
Schmitt Trigger Positive Threshold
Schmitt Trigger Negative Threshold
Schmitt Trigger Input Resistance
Reset Pin pull-up Resistance
V
LCD
I
LCD
F
LCD
F
OSC
F
FM
F
AM
(V
DD
= 3V, Temp = 25°C , unless otherwise specified)
Symbol
V
DD
I
DD1
Test Conditions
Min
Typ
Max
Unit
frequency mode
clock mode
respect to VDD
all segments on
--
--
2
--
--
--
1.8
55
2.25
--
32
32.768
--
--
150
2.0
--
--
--
--
--
2.3
0.9
75
750
3.6
110
2.5
5
--
--
150
30
--
--
0.5
0.3V
DD
--
0.4
--
2.4
--
--
--
mA
µA
V
µA
Hz
kHz
MHz
MHz
Ω
kΩ
V
V
V
V
V
V
V
kΩ
kΩ
V
IN
= 0.3 V
PP
V
IN
= 0.3 V
PP
11.0
0.5
--
--
--
--
0.7V
DD
R
IN(FM)
F
FM
=120MHz
R
IN(AM)
F
AM
=12MHz
V
OL
oc V
DD
=3V, Isink =10mA
V
IL
V
IH
V
OL
V
OH
Vt+
Vt-
R
IN+/-
R
IN-UP
V
DD
=3V, Isink=4mA
V
DD
=3V, I
SOURCE
=-4mA
V
DD
=3V
V
DD
=3V
pull-up or pull-down
--
V
DD
-0.5
--
0.6
--
--
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
2000.12.31
4
Silan
Semiconductors
PAD DESCRIPTION
Pad
No.
1
2~4
5 ~ 17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Note:
I
ISU
ISD
SC3610
Description
Supply voltage
LCD common drive signal for driving LCD display
LCD segment drive signal for driving LCD display
32.768 kHz crystal oscillator input pin
32.768 kHz crystal oscillator output pin
LCD Supply voltage. Connects a 0.1
µF
capacitor between this pin and
V
SS
Active low power-on reset with pull-up resistor of approx.750kΩ
For testing use only with internal pull-down
When high, the chip will enter test mode
Alarm function on or off in toggle mode. Internal pull up input
When pressed, will display the alarm time. Internal pull up input
Minute setting for time and alarm(together with AL-DISP). Internal pull
up.
Hour setting for time and alarm(together with AL-DISP). Internal pull up.
No connection
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.
Alarm output at 1kHz with 0.2 sec on and 0.2 sec off, push-pull output.
Select IF offset in FM mode. H:70kHz, L:10.7kHz
No connection
For frequency counting mode only, Range = H or L, gate time = 0.1S
AM/FM mode selection. High for AM and low for FM, internal pull-up.
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.
O
OD10
O4
OL
Oscillator Output Pad
Open Drain with 10mA output driving
Push-pull output pad with 4mA driving
LCD segment and common output pad
Symbol
VDD
COM1 ~ COM3
SEG0 ~ SEG12
OSCI
OSCO
V
LCD
RST
TESTCLK
TEST
AL-ON/OFF
AL-DISP
MIN-SET
HR-SET
NC
CLKFREQ-SEL
V
SS
AL-SIG
AL-OUT
IF70k
NC
RANGE
AM/FM-SEL
AV
DD
AM
IN
AV
SS
FM
IN
I/O
--
OL
OL
I
O
O
ISU
ISD
ISD
ISU
ISU
ISU
ISU
--
ISD
--
OD10
O4
ISD
--
ISU
ISU
--
--
--
--
Oscillator Input Pad
Schmitt trigger input pad with pull-up
Schmitt trigger input pad with pull-down
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
2000.12.31
5
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