MIK1089D
6 Functions 6 Digit Alarm-
Chronograph Duplexed LCD
Watch Circuit
Revised October 1999
Features
Single chip CMOS construction
Drives 6 digit duplexes LCD with 7 day mark, AM/PM
mark, date mark and alarm mark
Colon display
Direct drive of piezoelectric transducer at 3 volt peak to
peak
32,768 Hz Crystal frequency
On-chip oscillator and resistors
On-chip voltage doubler
Single 1.5 V battery operation
Low power dissipation
Debounce circuitry on switch inputs
Protection against static discharge
Trimmer capacitor included
Functions
6 Function: Month, Date, Day-of-Week, Hour, Minute,
Second
Alarm function with 4 to 5 minute snooze
6 Digit chronograph: Autoranging after 30 minutes to hour,
minute, second
User seletable 12 hour/24 hour format
Alarm output for melody IC (KS5310, KS5381, KS5318
series)
4 Year calendar
One touch correction of time error within 30 seconds
Fast advance for time and alarm time set
Chime on every hour
Electrical Characteristics
(T
a
= 25
o
C, V
DD
= 0 V, V
SS
= -1.5 V; unless otherwise specified)
Parameter
Symbol Test
Condition Min Typ Max
Unit
V
SS
1.2 1.5 1.8 V
Operating Voltage
V
EE
2.4 3.0 3.6 V
Supply Current
I
DD
Without
Load
V
SS
=-1.5
-
2.0
A
Input High Voltage
V
IH
V
DD
-0.3
V
DD
V
Input Low Voltage
V
IL
V
SS
V
SS
+0.3
Oscillator Start Voltage
V
OSC
Within 5 sec
1.45
V
I
ala
V
sat
= 0.5 V
(Both Direction)
0.5 - mA
Alarm Driver Current
I
alb
V
sat
= 0.5 V
10
-
A
DC-DC Conversion Frequency
F
CON
C
1
= C
2
= 0.1
F
1,024 KHz
LCD Frequency
F
d
32
Hz
Time Stability
T
stb
V
SS
= -1.3
-1.8 V
- 3
ppm
Switch Debouncing Time
Tdeb
31.25
msec
Quartz Crystal Parameters: Fp=32768 Hz, C
L
=12.5 pF, C
O
=1.2pF, C
1
=3.0FF,R
r
=35K
Page 1 of 3
MIK1089D
6 Functions 6 Digit Alarm-
Chronograph Duplexed LCD
Watch Circuit
Revised October 1999
PM/AM
G2/D2
ADEG/SU
B2/C2
C1/B1
F3/E3
A2/MO
G3/D3
A3/WE
F4/E4
A4/TH
G4/D4
A5/FR
B4/C4
A6/SA
F5/E5
DATE/AL
G5/D5
COM1
B5/C5 F6/E6
G6/D6 B6/C6
COM2
F2/E2
COL/TU
B3/C3
SU MO TU WE TH FR SA
B1
B5
B6
B2
B4
B3
F2
F3
F4
F5
F6
A2
A1
A3
A4
A5
A6
G2
G1
G3
G4
D2
D1
D3
D4
D5
D6
C1
C5
C6
C2
C4
C3
COLON
E2
E1
E3
E4
E5
E6
AM
PM
39
46
16
45
19
42
22
17
44
20
41
23
18
43
21
40
24
34
2
29
7
38
33
3
28
8
37
32
4
27
9
13
36
31
5
26
10
14
35
1
30
6
25
12
11
15
V
DD
V
DD
0,1 F
1,5V
0,1 F
+
L = 30 - 40 mHn
V
SS
V
SS
ALA1 or ALA2
ALA1 or ALA2
or
Rb
Rb
Rc
Rc = 2 - 10KOhm
Rb = 1 - 5 KOhm
M
AC
VDD
VSS
Vee
ALB
ALA2
ALA1
OO
OI
COM2
PM/AM AEDG/SU
C1/B1
A2/MO
COL/TU A3/WE
A4/TH A5/FR A6/SA DATE/AL
COM1
F2/E2
G2/D2 B2/C2
F3/E3 G3/D3 B3/C3
F4/E4 G4/D4 B4/C4 F5/E5 G5/D5 B5/C5 F6/E6 G6/D6 B6/C6
T3
D
S
CAP
1KO
Vee
T2
T1
VDD
Page 2 of 3
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