MIK7089F-XX
6 Functions 6 Digit Alarm-
Chronograph Duplexed LCD Watch
Circuit with El Lamp Driver
July 1999 - revised November 2000
Features
Single chip CMOS construction
Drives 6 digit duplexes LCD with 7 day mark, AM/PM
mark, date mark and alarm mark
Colon display
32,768 Hz Crystal frequency
On-chip oscillator and resistors
On-chip voltage doubler
Low power dissipation
Debounce circuitry on switch inputs
Protection against static discharge
Trimmer capacitor included
Economical solution for EL display
No external component needed for delay function
Min external components in application
Functions
Watch
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 selectable 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
EL Lamp Driver
Single 1.5 V or 3.0 V battery operation (mask option)
(7089-01: -1.5 V, 7089-02: -3.0 V)
DC to AC conversion
Built-in delay function
Two independent trigger inputs:
TRG (is active at high)makes EL display for 2,4 or 8
second delay (mask option),
BL (is active at high) makes EL flash without any delay
(See Timing Diagram)
Output frequency-32KHz, 16KHz, 8KHz, 4KHz or 2KHz
(mask option)
PMP duty circle 1/2, 3/4 or 7/8 (mask option)
EL frequency 1KHz, 512 Hz or 256 Hz (mask option)
Pin Description
N
Pad Name
I/O
Description
N
Pad Name
I/O
Description
1
F2/E2
O
Signal to LCD (Segment)
27
A6
/
SA
O
Signal to LCD (Segment)
2
G2/D2
O
Signal to LCD (Segment)
28
A5/FR
O
Signal to LCD (Segment)
3
B2/C2
O
Signal to LCD (Segment)
29
A4/TH
O
Signal to LCD (Segment)
4
F3/E3
O
Signal to LCD (Segment)
30
A3/WE
O
Signal to LCD (Segment)
5
G3/D3
O
Signal to LCD (Segment)
31
COL/TU
O
Signal to LCD (Segment)
6
B3/C3
O
Signal to LCD (Segment)
32
A2/MO
O
Signal to LCD (Segment)
7
F4/E4
O
Signal to LCD (Segment)
33
C1/B1
O
Signal to LCD (Segment)
8
G4/D4
O
Signal to LCD (Segment)
34
ADEG/SU
O
Signal to LCD (Segment)
9
B4/C4
O
Signal to LCD (Segment)
35
PM/AM
O
Signal to LCD (Segment)
10
F5/E5
O
Signal to LCD (Segment)
36
COM2
O
Signal to LCD (Common)
11
G5/D5
O
Signal to LCD (Segment)
37
M
I
Switch M
12
B5/C5
O
Signal to LCD (Segment)
38
AC
I
Common reset
13
F6/E6
O
Signal to LCD (Segment)
39
TRG
I
Signal EL display (Pull down)
14
G6/D6
O
Signal to LCD (Segment)
40
BL
I
Signal EL flash (Pull down)
15
B6/C6
O
Signal to LCD (Segment)
41
V
DD
Positive Power Supply
16
T1
I
Test Pad1
42
DCHG
O
DC-AC converter
17 V
DD
Positive Power Supply
43
V
EE2
Negative Power Supply for EL
Driver
18
T2
I
Test Pad2
44
PMP
O
DC-AC converter
19 V
EE1
Voltage Doubler Supply
45
V
SS
Negative Power Supply
20
1KO
O
Voltage Doubler Capacitor
46
ALB
O
Sound Converter
21
CAP
I
Voltage Doubler Capacitor
47
ALA 2
O
Sound Converter (Open drain
output)
22
S
I
Switch S
48
ALA1
O
Sound Converter
23
D
I
Switch D
49
OO
O
Oscillator output
24
T3
I
Test Pad 3
50
OI
I
Oscillator input
25
COM1
O
Signal to LCD (Common)
26
DATE/AL
O
Signal to LCD (Segment)
Page 1 of 6
MIK7089F-XX
6 Functions 6 Digit Alarm-
Chronograph Duplexed LCD Watch
Circuit with El Lamp Driver
July 1999 - revised November 2000
Electrical Characteristics MIK7089F-01
(T
a
= 25
o
C, V
DD
= 0 V, V
SS
= V
EE2
= -1.5 V; unless otherwise specified)
Parameter Symbol Test
Condition
Min
Typ
Max
Units
Operating Voltage
V
SS
=V
EE2
1.2
1.5
1.8
V
V
EE1
2.4
3.0
3.6
V
Supply Current
I
DD
Without
Load
2.0
A
Input High Voltage
V
IH
-0.3
0 V
Input Low Voltage
V
IL
V
SS
V
SS
+0.3
Oscillator Start Voltage
V
OSC
Within 5 sec
1.45
V
Oscillator Frequency
F
OSC
32.768 KHz
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
= -1.2
-1.8 V
3
ppm
Switch Debouncing Time
Tdeb
31.25
msec
Output drive Current
I
OH
PMP, V
OH
= -0.7V
DCHG, V
OH
= -0.7V
-1.7 -0.7
-0.2
mA
Output sink Current
I
OL
PMP, V
OL
= -0.9V
DCHG, V
OL
= -0.9V
15
1
mA
I
OL
ALA2,
V
OL
= -0.4V
50
mA
I
OH
ALA1,
V
OH
= -0.7V, Vss = -1.4V
-1.5
mA
I
OL
ALA1,
V
OL
= -0.7V, Vss = -1.4V
1.5
mA
Alarm Driver Current
I
OL
ALB,
V
OL
= -0.7V, Vss = -1.4V
20
A
Quartz Crystal Parameters: F
= 32768 Hz, C
L
= 12.5
F, C
O
= 1.2
F, C
1
= 3.0
F
F, Rr = 35K
Electrical Characteristics MIK7089F-02
(T
a
= 25
o
C, V
DD
= 0 V, V
SS
= -1.5 V, V
EE2
= -3.0 V; unless otherwise specified)
Characteristic Symbol
Test
Condition Min
Typ
Max
Unit
Operating Voltage
V
SS
1.2
1.5
1.8
V
EE1
2.4
3.0
3.6
V
V
EE2
1.2
3.0
3.6
Supply Current
I
DD
Without
Load
2.0
A
Input High Voltage
V
IH
-0.3
0
V
Input Low Voltage
V
IL
V
SS
V
SS
+0.3
Oscillator Start Voltage
V
OSC
Within 5 sec
1.45
V
Oscillator Frequency
F
OSC
32.768
KHz
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
= -1.2
-1.8 V
3
ppm
Switch Debouncing Time
Tdeb
31.25
msec
Output drive Current
I
OH
PMP, V
OH
= -2.2V
DCHG, V
OH
= -2.2V
-3.4 -1.4
-0.2
mA
Output sink Current
I
OL
PMP, V
OL
= -2.4V
DCHG, V
OL
= -2.4V
15
1
mA
I
OL
ALA2,
V
OL
= -0.4V
50
mA
I
OH
ALA1,
V
OH
= -0.7V, Vss = -1.4V
-1.5
mA
I
OL
ALA1,
V
OL
= -0.7V, Vss = -1.4V
1.5
mA
Alarm Driver Current
I
OL
ALB,
V
OL
= -0.7V, Vss = -1.4V
20
A
Quartz Crystal Parameters: F
= 32768 Hz, C
L
= 12.5
F, C
O
= 1.2
F, C
1
= 3.0
F
F, Rr = 35K
Page 3 of 6
MIK7089F-XX
6 Functions 6 Digit Alarm-
Chronograph Duplexed LCD Watch
Circuit with El Lamp Driver
July 1999 - revised November 2000
MIK7089F-XX
6 Functions 6 Digit Alarm-
Chronograph Duplexed LCD Watch
Circuit with El Lamp Driver
July 1999 - revised November 2000
Page 5 of 6
Page 5 of 6
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