UTC 6610 CMOS IC
UTC
UNISONIC TECHNOLOGIES CO. LTD
1
QW-R502-011,A
FREQUENCY AND CLOCK
DISPLAY DRIVER
The UTC 6610 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
QFP-48-12
12-0.8
BLOCK DIAGRAM
M
U
X
TIMMING CTL
CLOCK
AMP
AMP
PRESCALER
DIV.BY 10
IF
FREQ
OFFSET
COUNTER
LCD DRIVER
AV
DD
V
DD
CO
M
1
CO
M
2
CO
M
3
SE
G
0
SE
G
1
SE
G
2
SE
G
3
SE
G
4
SE
G
5
SE
G
6
SE
G
7
SE
G
8
SE
G
9
SE
G
1
0
SE
G
1
1
SE
G
1
2
AV
SS
V
SS
T
EST
TEST
C
L
K
OS
C
OUT
OS
C I
N
PR SET
M
I
N SET
AL
D
I
SP
A
L
O
N
/O
FF
AL-OUT
AL-SIG
RST
CLKFREQ-SEL
V
LCD
RANGE
IF70K
AM/FM-SEL
AM
IN
FM
IN
UTC 6610 CMOS IC
UTC
UNISONIC TECHNOLOGIES CO. LTD
2
QW-R502-011,A
PAD ASSIGNMENT
QFP-48- 12
12-0.8 PACKAGE
36 35 34 33 32 31 30 29 28 27 26 25
1
2
3
4
5
6
7
8
9 10 11 12
37
38
39
40
41
42
43
44
45
46
47
48
24
23
22
21
20
19
18
17
16
15
14
13
RAN
G
E
IF7
0
K
NC
NC
AL-O
U
T
AL-S
IG
V
SS
CL
KF
REQ
-
SEL
NC
HR
-SET
MI
N
-
S
E
T
NC
AL DISP
AL ON/OFF
TEST
TEST CLK
RST
V
SS
V
LCD
OSCOUT
OSC IN
SEG11
SEG12
NC
NC
SE
G
1
SEG
2
SE
G
3
SE
G
4
SEG
5
SEG
6
SE
G
7
SE
G
8
SE
G
9
SE
G
1
0
NC
NC
SEG0
COM1
COM2
COM3
V
SS
V
DD
AM
IN
FM
IN
AV
SS
AV
DD
AM/FM-SEL
6610
QFP-44- 10
10-.8 PACKAGE
36
33 32 31 30 29 28 27 26 25
1
2
3
4
5
6
7
8
9 10
11
12
37
38
39
40
41
42
43
44
24
23
22
21
20
19
18
17
16
15
14
13
RAN
G
E
IF
7
0
K
NC
AL
-
O
UT
AL
-
S
I
G
V
SS
CLKFREQ
-
SEL
NC
HR-SET
M
I
N-
SET
NC
AL DISP
AL ON/OFF
TEST
TEST CLK
RST
V
LCD
OSCOUT
OSC IN
SEG11
SEG12
NC
SEG
1
SEG
2
SEG
3
SEG
4
SEG
5
SEG
6
SEG
7
SEG
8
SEG
9
SEG
1
0
NC
SEG0
COM1
COM2
COM3
V
DD
AM
IN
FM
IN
AV
SS
AV
DD
AM/FM-SEL
34
35
NC
6610
UTC 6610 CMOS IC
UTC
UNISONIC TECHNOLOGIES CO. LTD
3
QW-R502-011,A
COB PACKAGE,QFP TYPE
36
33
32
31
30 29 28 27 26 25
1
2
3
4
5
6
7
8
9 10
11
12
37
39
40
24 23 22 21
20
19
18
17
16
15
14
13
RA
NGE
IF
70K
NC
AL
-O
U
T
AL
-SIG
V
SS
CL
K
F
RE
Q-
S
E
L
NC
HR
-SET
MI
N-
S
E
T
AL DISP
AL ON/OFF
TEST
TEST CLK
RST
V
LCD
OSCOUT
OSC IN
SEG11
SEG12
SEG
1
SEG
2
SEG
3
SEG
4
SEG
5
SEG
6
SEG
7
SEG
8
SEG
9
SEG
1
0
SEG0
COM1
COM2
COM3
V
DD
AM
IN
FM
IN
AV
SS
AV
DD
AM/FM-SEL
34
35
38
6610
COB PACKAGE SOP TYPE
RANGE
IF70K
AL-OUT
AL-SIG
CLKFREQ-SEL
NC
HR-SET
MIN-SET
AL DISP
AL ON/OFF
OSCOUT
OSC IN
SEG11
SEG12
SEG0
COM1
COM2
COM3
V
DD
AM
IN
FM
IN
V
SS
AM/FM-SEL
1
2
3
4
5
6
7
8
9
10
11
12
18
17
16
15
14
13
36
35
34
33
32
31
30
29
28
27
26
25
19
20
21
22
23
24
6610
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
NC
RST
V
LCD
UTC 6610 CMOS IC
UTC
UNISONIC TECHNOLOGIES CO. LTD
4
QW-R502-011,A
ABSOLUTE MAXIMUM RATINGS
( Ta=25
C ,unless otherwise specified )
PARAMETER SYMBOL
RATING
UNIT
Supply Voltage
V
DD
0.5 ~ 7.0
V
Input Voltage
V
IN
-0.5 ~ V
DD
+0.5
V
Output Voltage
V
OUT
-0.5 ~ V
DD
+0.5
V
Storage Temperature
T
STG
-40 ~ +125
C
ESD Protection
-2 ~ + 2
kV
ELECTRICAL CHARACTERISTICS
(Ta=25
C, V
DD
= 3,Unless otherwise specified)
Parameter Symbol
Test
conditions
MIN
TYP
MAX
UNIT
Supply Voltage
V
DD
I
DD1
frequency
mode
1.8 3.6 mA
VDD Supply Current Consumption
I
DD2
clock
mode
55 110 A
Internal LCD Reference Voltage
V
LCD
respect to VDD
2
2.25
2.5
V
LCD Drive Current consumption
I
LCD
all segments on
5
A
LCD Frame Frequency
F
LCD
32 Hz
Oscillator Frequency
F
OSC
32.768 kHz
FM Input Frequency
F
FM
V
IN
= 0.3 V
PP
11.0
150
MHz
AM Input Frequency
F
AM
V
IN
= 0.3 V
PP
0.5
30
MHz
FM Input impedance
R
IN(FM)
F
FM
=120MHz
150
AM Input impedance
R
IN(AM)
F
AM
=12MHz
2.0
k
Open Drain Low Level Voltage
V
OL
oc V
DD
=3V, Isink =10mA
0.5
V
Low Level Input Voltage
V
IL
0.3V
DD
V
High Level Input Voltage
V
IH
0.7V
DD
V
Low Level Output Voltage
V
OL
V
DD
=3V, Isink=4mA
0.4
V
High Level Output Voltage
V
OH
V
DD
=3V, I
SOURCE
=-4mA
V
DD
-0.5
V
Schmitt Trigger Positive Threshold
Vt+
V
DD
=3V
2.3
2.4
V
Schmitt Trigger Negative Threshold
Vt-
V
DD
=3V 0.6
0.9
V
Schmitt Trigger Input Resistance
R
IN+/-
pull-up or pull-down
75
k
Reset Pin pull-up Resistance
R
IN-UP
750 k
PAD DESCRIPTION
PAD NO.
SYMBOL
I/O
DESCRIPTION
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
LCD
O
LCD Supply voltage. Connects a 0.1
F capacitor between this pin and
V
SS
21
RST ISU
Active low power-on reset with pull-up resistor of approx.750k
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
Minute setting for time and alarm(together with AL-DISP). Internal pull
up.
27
HR-SET
ISU
Hour setting for time and alarm(together with AL-DISP). Internal pull up.
28 NC
No
connection
29 CLKFREQ-SEL ISD
Clock or frequency display mode. Internal pull-down input. When low,
clock will be displayed. When high, radio frequency will be displayed.
30 V
SS
Ground
pin
31 AL-SIG
OD10
Open drain alarm signal output, active low.
32
AL-OUT
O4
Alarm output at 1kHz with 0.2 sec on and 0.2 sec off, push-pull output.
UTC 6610 CMOS IC
UTC
UNISONIC TECHNOLOGIES CO. LTD
5
QW-R502-011,A
33
IF70k
ISD
Select IF offset in FM mode. H:70kHz, L:10.7kHz
PAD NO.
SYMBOL
I/O
DESCRIPTION
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
DD
Analog Supply voltage
38 AM
IN
AM signal input, 0.3V peak to peak, 500kHz to 30MHz.
39 AV
SS
Analog Ground pin.
40 FM
IN
FM signal input, 0.3V peak to peak, 11-150MHz.
Note: I : Oscillator Input Pad
O: Oscillator Output Pad
ISU: Schmitt trigger input pad with pull-up
D10: Open Drain with 10mA output driving
ISD: Schmitt trigger input pad with pull-down
O4: Push-pull output pad with 4mA driving
OL: LCD segment and common output pad
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
IN
and the AM
IN
pins respectively. The FM signal then routes through a divide-by-
10
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
RESOULTION
FM
H
L
11.00 MHz to 99.99 MHz
11.00 MHz to 149.9 kHz
10kHz
100kHz
1kHz
10kHz
AM H
L
500 kHz to 9999 kHz
0.5 MHz to 29.99 MHz
1kHz
10kHz
100kHz
1kHz
Note:1 When counter frequency overflow, MSB will not be displayed.
IF OFFSET FOR DIFFERENT APPLICATION:
IF70K AM/FM-SEL IF
Offset
Operation
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
+455kHz
Display AM input frequency 455kHz
* Suitable to use with TDA7088.
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 after entering the alarm setting 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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