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-48-12Ò12-0.8




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
VLCD
RANGE
IF70K
AM/FM-SEL
AMIN
FMIN