NIPPON PRECISION CIRCUITS INC.
NIPPON PRECISION CIRCUITS-1
OVERVIEW
CF5732 Series
Analog clock CMOS IC
The CF5732 series are analog clock driver ICs using
32kHz reference frequency of crystal oscillator. Some
versions in accordance with the combinations of each
motor drive and alarm output characteristics can provide
a wide range of applications for various clock specifica-
tions.
The CF5732 series incorporates 4 types of pace adjust-
ment capacitors, which enables to adjust the pace with
bonding options.
FEATURES
- Built-in oscillator circuits(32.678 kHz)
On-chip feed back resistors (Rf, Rd)
Crystal oscillator capacitors (C
D
, C
G
)
Additional 4 capacitors for pace adjustment.
- Debounce circuit (AI terminal)
- Single 1.5 V supply
- Available as a die
SERIES LINEUP
CF5732EA
CF5732FA
CF5732GA
CF5732HA
CF5732JA
CF5732KA
Built-in
XT terminal C
G
(pF)
11.5
11.5
10
11.5
11.5
11.5
Capacitor
XT terminal C
D
(pF)
29
29
25
29
29
29
C1(pF)
6
6
3
6
6
6
C2(pF)
7
7
4
7
7
7
C4(pF)
8
8
5
8
8
8
C4(pF)
9
9
6
9
9
9
Motor
Active Level
-
H
L
H
H
H
Output
Hand Drive Cycle(sec)
0.125
1
1
1
1
1
Pulse Width(msec)
DUTY50%
31.25
31.25
15.6
23.4375
46.875
Alarm
Active Level
L
L
L
L
L
L
Input
Test Function
Yes(1/2V
DD
)
Yes(1/2V
DD
)
Yes(1/2V
DD
)
Yes(1/2V
DD
)
Yes(1/2V
DD
)
Yes(1/2V
DD
)
Alarm
Terminal
AO
AO
AO
AO
AO
AO
AO
AO
AO
AO
AO
AO
Output
Active Level
H
L(*1)
H
L(*2)
H
L(*1)
H
L(*2)
H
L(*2)
H
L(*2)
Fundmental Frequency(Hz)
2048
2048
2048
2048
2048
2048
2048
2048
2048
2048
2048
2048
Modulation Frequency(Hz)
8
+
1 8
+
1 8
+
1 8
+
1 8
+
1 8
+
1 16
+
1
16
+
1
8
+
1
8
+
1
8
+
1
8
+
1
I
OH
MIN(mA)
-
1.0
-
1.0
-
1.0
-
1.0
-
1.0
-
1.0
I
OL
MIN(mA)
1.0
1.0
1.0
1.0
1.0
1.0
(*1) AO is the reverse phase of AO, when output is active. (the same phase, when output is inactive)
(*2) AO is complete reverse phase of AO. (even output is inactive.)
NIPPON PRECISION CIRCUITS-2
CF5732 Series
PINOUT
(0, 0)
1
2
3
4
5
6
7
8
9
11
X
Y
10
12
13
14
Name
VDD
VSS
TC
AI
AO
AO
OUT2
OUT1
XT
XT
C1
C2
C3
C4
Description
Power supply pin
Ground
Test pin
Alarm Input
Alarm signal Output
Alarm signal Inverting Output
Motor drive output 2
Motor drive output 1
Crystal oscillator connection
Crystal oscillator connection
Supplementary internal capacitor connection 1
Supplementary internal capacitor connection 2
Supplementary internal capacitor connection 3
Supplementary internal capacitor connection 4
Chip size:
1.49
1.40mm
Chip thickness:
300
30
m
Pad size:
100
100
m
Reverse side of chip is V
DD
.
No
Name
X
Y
No
Name
X
Y
1
VDD
1023
1248
8
OUT1
340
151
2
VSS
817
1248
9
XT
567
151
3
TC
553
1248
10
XT
1101
151
4
AI
214
1248
11
C1
1305
382
5
AO
151
943
12
C2
1305
682
6
AO
151
429
13
C3
1305
880
7
OUT2
151
151
14
C4
1305
1105
(Unit:
m)
PIN DESCRIPTION
BLOCK DIAGRAM
4 Stage
Divider
13 Stage
Divider
Alarm
Input
Alarm Output
Control
Mortor Output
Control
VDD
VSS
AO
AO
OUT1 OUT2
TC
AI
Alarm
Test
XT
C
G
C
D
XT
C1
C2
C3
C4
NIPPON PRECISION CIRCUITS-3
CF5732 Series
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
Parameter
Symbol
Condition
Rating
Unit
Supply Voltage
V
DD
- V
SS
-
0.3 to
+
5.0
V
Input Voltage
V
IN
V
SS
V
IN
V
DD
V
Operating Temperature
T
OPR
-
30 to
+
70
C
Storage Temperature
T
STG
-
40 to
+
125
C
(V
SS
= 0V)
Rating
Parameter
Symbol
Condition
MIN
TYP
MAX
Unit
Supply Voltage
V
DD
1.1
1.5
2.0
V
Supply Current
I
DD
No Load(*1)
1.0
3.0
A
Motor Output Current
I
MOT
V
DD
= 1.2V, R
L
= 200
4.0
mA
Alarm Output Current
I
OH
AO, AO pin, V
OH
= 0.75V
-
1.0
mA
I
OL
AO, AO pin, V
OL
= 0.75V
1.0
mA
Alarm Input Voltage
V
IH
AI pin
V
DD
-
0.2
V
DD
V
V
IL
AI pin
V
SS
V
SS
+
0.2
V
Alarm Input Center Voltage
V
IM
AI pin
1/2V
DD
V
Input Resistance
R
IN
AI pin
5
15
50
k
Oscillator Stability
f/f
V
DD
= 1.1V to 2.0V
0.5
1
PPM/0.1V
Internal Capacitance
C
G
(*2)
GA
10
pF
others
11.5
pF
C
D
(*3)
GA
25
pF
others
29
pF
(Ta= 25
C, V
DD
= 1.5V, V
SS
= 0V, f
0
= 32.768kHz unless otherwise noted)
(*1) All terminals except for the supply and the crystal oscillators are open.
(*2) C
G
is the incorporated capacitance between VDD and XT.
(*3) C
D
is the incorporated capacitance between VDD and XT.
NIPPON PRECISION CIRCUITS-4
CF5732 Series
FUNCTIONAL DESCRIPTION
Alarm input/output
AO
AO
(*1)
AI
AO
(*2)
1/2V
DD
(*3)
f
PW
f
CY
(*1) AO is the reverse phase of AO, when output is active. (the same phase, when output is inactive): CF5732EA, GA
(*2) AO is complete reverse phase of AO. (even output is inactive.): CF5732FA, HA, JA, KA
(*3) When AI is held at 1/2 V
DD
, the alarm reference, frequency is output at AO and AO.
Input Debouncing Circuit
Setting bouncing delay time prevents the circuit from the
erroneous operation by AI input bouncing (chattering.)
t
on
31.25 msec : The alarm input is ignored
t
on
62.5 msec : The alarm input is accepted
t
CH
t
ON
AI
(Active L)
NIPPON PRECISION CIRCUITS-5
CF5732 Series
Motor Drive Outputs
Step needle movement
CF5732FA, GA, HA, JA, KA
OUT1
OUT2
t
PW
t
PW
t
CY
1sec
t
CY
1sec
OUT1
OUT2
t
CY
125msec
t
CY
125msec
Continuos needle movement
CF5732EA
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