MIK9503I
32 kHz Analog Clock Driver
with Alarm In
November 2000
Features
Single 1.5V battery operation
Low power consumption
High precision 32.768 kHz crystal controlled oscillator
1Hz stepping motor driver with 31.25 ms pulse width
2 kHz modulated by 8 Hz and 1 Hz alarm output
Speaker output without a transistor.
Electrical Characteristics
(V
dd
= 1.5V, V
SS
= 0V, T
A
= 25
0
C unless otherwise specified)
Parameter Test
condition
Min
Typ Max Units
Vdd Operating voltage
1.1
1.5
1.8
V
Idd Operating current
No load
2.0
A
Motor output z:
t1 Cycle Time
tp1 Pulse Duration
Im Motor output current
V
dd
= 1.2 V, R
L
= 200
4.0
2.0
31.25
sec
ms
mA
I
ol
Alarm output low current
V
dd
= 1.5 V, V
ol
= 1.1V
50
mA
f/f Oscillation stability
V
dd
= 1.2 V
1.8 V
3.0
ppm
V
STS
Oscillator Start Voltage
Within 1sec
1.2
V
Quartz Crystal Parameter: Fp = 32768 Hz, C
L
= 12.5 pF, C
0
= 1.2 pF, C
1
= 3.0FF, Rr = 35 K
Application Information
Pad Assignment
Pad No
Name
Function
1 OSCO
Oscillator
output
2 V
SS
Negative power supply
3
ALARM IN
Alarm input
4
MOTOR 1
Motor driver output 1
5
MOTOR 2
Motor driver output 2
6
ALARM OUT
Alarm output
7 V
dd
Positive power supply
8
OSCI
Oscillator input
Application Circuit
M
1.5 V
+
1
QUARTZ
SPEAKER
3
2
MOTOR
6
7
8
4
5
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