CF5761 series
CMOS Analog Clock IC with Alarm Function
OVERVIEW
The CF5761 series are analog clock ICs with alarm functions that derive their timing from a standard
32.768kHz oscillator element. Two kinds of alarm output are available and can be selected using a control pin.
The series lineup comprises devices with various alarm patterns and motor outputs for a wide range of clock
specifications. They support convenient functions, such as input chattering elimination circuit and power-on
clear functions. They are fabricated using Molybdenum-gate CMOS process, realizing low power consump-
tion.
FEATURES
I
I
PAD LAYOUT
(Unit:µm)
I
I
I
I
I
I
I
I
I
32.768kHz fundamental frequency oscillator
Feedback resistor and oscillator capacitor C
D
built-in
Supports various alarms: piezo-alarm, electromag-
netic speaker
Snooze function
Switchable alarm function using SEL pin
Alarm auto-stop function (see series lineup)
Input chattering elimination circuit (SEL, AI, SN)
Test function
1.2 to 3.6V operating supply voltage
Chip form (CF5761××)
Molybdenum-gate CMOS process
VDD TI
O1
O2
VSS
AO2
1
2
3
4
NPC
5
6
7
13
12
(1410, 1370)
HA5761
11
10
AI
SN
XT
XTN
9
8
(0,0) AO1 AO3 SEL
Chip size: 1.41
×
1.37 mm
Chip thickness: 300 ± 30 µm
Pad size: 100
×
100 µm
Reverse side: V
DD
level
ORDERING INFORMATION
Device
CF5761××
Package
Chip form
NIPPON PRECISION CIRCUITS INC.—1
CF5761 series
SERIES LINEUP
C
G
[pF]
Built-in
capacitance
1
C
D
[pF]
Active level
Motor output Needle period t
CY
[s]
Pulsewidth t
PW
[ms]
Active level
AI input
Bounce delay [ms]
SN input
Active level
Snooze time t
SNZ
[s]
Bounce delay [ms]
SEL pin
Application
Pin
Active level
Frequency f
PW
[kHz]
Step 1
Modulation Step 2
f
CY
[Hz]
Step 3
Step 4
Alarm output
Step 1
Step 2
Duty [%]
Step 3
Step 4
Step 1
Step 2
Step time [s]
Step 3
Step 4
Auto-stop [s]
I
OH
[mA] min.
I
OL
[mA] min.
CF5761CA
4
27
–
0.0625 (8Hz sweep)
62.5 (50% duty)
HIGH (pull-down)
62.5
HIGH (pull-down)
300
62.5
LOW
Simple alarm
AO1, AO3: tone
AO2: motor bell
AO1
AO2
AO3
H
4
8
–
–
–
50
–
–
–
–
–
–
–
−0.9
0.9
H
DC
–
–
–
–
–
–
–
–
–
–
–
–
−0.9
0.01
L
4
8
–
–
–
50
–
–
–
–
–
–
–
−0.9
0.9
HIGH
Simple alarm
AO1, AO3: tone
AO2: Magnet speaker
AO1
AO2
AO3
H
2
8
–
–
–
50
–
–
–
–
–
–
–
−0.9
0.01
CF5761EA
4
27
LOW
1
23.4
HIGH (pull-down)
62.5
HIGH (pull-down)
300
62.5
LOW
Step tone alarm
AO1, AO2: motor bell
AO1
H
–
1+2+4+8
CF5761HA
4
27
LOW
10
13.7
HIGH (pull-down)
62.5
HIGH (pull-down)
300
62.5
LOW
Simple alarm
AO1, AO3: tone
AO1
H
4
1+16
–
–
–
50
–
–
–
–
–
–
–
−0.9
0.9
AO2
H
–
1+16
–
–
–
–
–
–
–
–
–
–
–
−0.9
0.01
AO3
L
HIGH
Simple alarm
AO1, AO3: tone
AO1
H
AO2
H
–
–
–
–
–
–
–
–
–
–
–
–
–
−0.9
0.01
AO3
L
4
See special timing in functional description.
−0.9
0.9
Not
used
−0.9
0.9
HIGH
Simple alarm
AO1, AO2: motor bell
AO1
H
DC
–
–
–
–
–
–
–
–
–
–
–
–
AO2
L
DC
–
–
–
–
–
–
–
–
–
–
–
–
−0.01
0.9
AO3
AO2
L
–
1+2+4+8
AO3
64Hz
clock
output
32Hz
clock
output
None
−0.9
0.9
−0.9
0.9
1+2+8 1+2+8
1+8
1+8
DC
DC
32kHz
50
50
F
50
50
output
50
50
–
–
0–8
0–8
8–16 8–16
16–24 16–24
24–
24–
None
−0.9
0.01
−0.01
0.9
−0.01
0.01
32kHz
F
output
4
4
1+16
–
–
–
50
–
–
–
–
–
–
–
None
−0.9
0.9
−0.9
0.01
−0.01
0.01
−0.9
0.9
1. C
G
and C
D
built-in parasitic capacitance (C
G
= C
D
= 4pF)
C
G
[pF]
Built-in
capacitance
1
C
D
[pF]
Active level
Motor output Needle period t
CY
[s]
Pulsewidth t
PW
[ms]
Active level
AI input
Bounce delay [ms]
Active level
SN input
Snooze time t
SNZ
[s]
Bounce delay [ms]
SEL pin
Application
Pin
Active level
Frequency f
PW
[kHz]
Step 1
Step 2
Modulation
f
CY
[Hz]
Step 3
Step 4
Alarm output
Step 1
Step 2
Duty [%]
Step 3
Step 4
Step 1
Step 2
Step time [s]
Step 3
Step 4
Auto-stop [s]
I
OH
[mA] min.
I
OL
[mA] min.
CF5761LB
4
34
LOW
1
31.3
LOW (pull-up)
62.5
LOW (pull-up)
300
62.5
LOW
Step volume alarm
AO1, AO2: tone
AO1
AO2
AO3
H
L
2
2
1+8
1+8
1+8
–
6.25
12.5
50
–
0–8
8–16
16–
–
−0.9
0.9
1+8
1+8
1+8
–
6.25
12.5
50
–
0–8
8–16
16–
–
−0.9
0.9
HIGH
Simple alarm
AO1, AO2: motor bell
AO1
AO2
AO3
H
DC
–
–
–
–
–
–
–
–
–
–
–
–
300
−0.9
0.9
−0.9
0.9
−0.9
0.9
−0.9
0.9
−0.9
0.9
−0.9
0.9
H
DC
–
–
–
–
–
–
–
–
–
–
–
–
CF5761MB
4
34
–
0.0625 (8Hz sweep)
62.5 (50% duty)
LOW (pull-up)
62.5
LOW (pull-up)
300
62.5
LOW
Step volume alarm
AO1, AO2: tone
AO1
AO2
AO3
H
2
1+8
1+8
1+8
1+8
6.25
12.5
25
50
0–4
4–8
8–12
12–
L
2
1+8
1+8
1+8
1+8
6.25
12.5
25
50
0–4
4–8
8–12
12–
HIGH
Simple alarm
AO1, AO2: motor bell
AO1
AO2
AO3
H
DC
–
–
–
–
–
–
–
–
–
–
–
–
300
−0.9
0.9
−0.9
0.9
−0.9
0.9
−0.9
0.9
−0.9
0.9
−0.9
0.9
H
DC
–
–
–
–
–
–
–
–
–
–
–
–
CF5761NB
4
34
LOW
1
23.4
LOW (pull-up)
62.5
LOW (pull-up)
300
62.5
LOW
Step volume alarm
AO1, AO2: tone
AO1
AO2
AO3
H
4
1+8
1+8
1+8
–
6.25
12.5
50
–
0–8
8–16
16–
–
L
4
1+8
1+8
1+8
–
6.25
12.5
50
–
0–8
8–16
16–
–
HIGH
Step volume alarm
AO1, AO2: tone
AO1
AO2
AO3
H
2
1+8
1+8
1+8
–
12.5
25
50
–
0–8
8–16
16–
–
300
−0.9
0.9
−0.9
0.9
−0.9
0.9
L
2
1+8
1+8
1+8
–
12.5
25
50
–
0–8
8–16
16–
–
Not
used
Not
used
Not
used
Not
used
Not
used
1. C
G
and C
D
built-in parasitic capacitance (C
G
= C
D
= 4pF)
NIPPON PRECISION CIRCUITS INC.—2
See special timing in functional description.
CF5761 series
BLOCK DIAGRAM
XT
XTN
6-stage
divider
5-stage
divider
4-stage
divider
4-stage
divider
Motor output
control
T1
AI
SN
Test control
Alarm input
control
Snooze input
control
Alarm pattern
control
Alarm output
control
Alarm pattern
select
O1
O2
AO1 AO2 AO3
SEL
PAD DESCRIPTION and DIMENSIONS
Pad dimensions
Number
1
2
3
4
5
6
7
8
9
10
Name
O1
O2
VSS
AO2
AO1
AO3
SEL
XTN
XT
SN
I/O
O
O
–
O
O
O
I
O
I
I
Function
X [µm]
Movement motor drive output 1 (CMOS output)
Movement motor drive output 2 (CMOS output)
Ground
Alarm output 2
Alarm output 1
Alarm output 3
Alarm function select. Pull-down resistor built-in
Crystal oscillator output. Oscillator capacitance C
D
built-in
Crystal oscillator input. Crystal connected between XT and XTN
Snooze input
Pull-down resistor built-in (CF5761CA, EA, HA)
Pull-up resistor built-in (CF5761LB, MB, NB)
Alarm input
Pull-down resistor built-in (CF5761CA, EA, HA)
Pull-up resistor built-in (CF5761LB, MB, NB)
Test pin
Supply
155
155
155
155
155
351
583
1255
1255
1255
Y [µm]
1215
1023
835
567
155
155
155
166
399
587
11
12
13
AI
T1
VDD
I
I/O
–
1255
1217
1029
821
1215
1215
NIPPON PRECISION CIRCUITS INC.—3
CF5761 series
SPECIFICATIONS
Absolute Maximum Ratings
Parameter
Supply voltage range
Input voltage range
Operating temperature range
Storage temperature range
Symbol
V
DD
−
V
SS
V
IN
T
opr
T
stg
Condition
Rating
−0.3
to 5.0
V
SS
to V
DD
−30
to 80
−65
to 150
Unit
V
V
°C
°C
Electrical Characteristics
1.5V operation
T
a
= 25°C, V
SS
= 0V, V
DD
= 1.5V, X’tal (f
0
= 32.768kHz, C
I
= 35kΩ max, C
G
= 20pF) unless otherwise noted
Rating
Parameter
Operating voltage
Oscillator startup time
1
Frequency voltage characteristic
Current consumption
1
O1, O2 motor output current
2
AI HIGH-level input current
AI LOW-level input current
SN, SEL HIGH-level input current
Symbol
V
DD
t
1
∆f/f
No output load
I
DD
I
OUT
I
IH1
I
IL1
I
IH2
I
IH3
SN LOW-level input current
AO1, AO2, AO3 LOW-level output
current
3
AO1, AO2, AO3 HIGH-level output
current
3
T1 LOW-level output current
T1 HIGH-level output current
F output voltage
4
Built-in capacitance
1.
2.
3.
4.
I
IL2
I
IL3
I
OL1
I
OL2
I
OH1
I
OH2
I
OLT
I
OHT
V
F
C
D
No output load, F output
V
DD
= 1.2V, R
L
= 400Ω
V
DD
= 1.5V, V
IH
= 1.5V
V
DD
= 1.5V, V
IL
= 0V
V
DD
= 1.5V, V
IH
= 1.5V
V
DD
= 1.5V, V
IH
= 0.5V
V
DD
= 1.5V, V
IL
= 0V
V
DD
= 1.5V, V
IL
= 1.0V
V
DD
= 1.5V, V
OL
= 0.75V
V
DD
= 1.5V, V
OL
= 0.75V
V
DD
= 1.5V, V
OH
= 0.75V
V
DD
= 1.5V, V
OH
= 0.75V
V
DD
= 1.5V, V
OL
= 1.5V
V
DD
= 1.5V, V
OH
= 0V
V
DD
= 1.2V, output
capacitance C
L
= 50pF
V
DD
= 1.2V
Condition
min
1.2
–
–
–
–
2.40
0.6
0.6
0.2
9
0.2
9
900
10
900
10
5
5
0.4
typ
1.5
–
–
0.5
0.9
2.55
3
3
1
18
1
18
2000
30
2000
30
10
10
–
See series lineup
max
3.6
5.0
1.0
1.0
µA
1.8
–
7.5
7.5
2
µA
36
2
µA
36
–
µA
100
–
µA
100
20
20
–
µA
µA
V
pF
mA
µA
µA
V
s
ppm/0.1V
Unit
Measured using standard circuits.
R
L
is the resistance of the motor coil connected between O1 and O2.
The rating varies depending on the device selected. Please refer to the series lineup table for details.
F output voltage is the difference voltage, with load capacitor C
L
connected between F and VSS pins, between 0.5V
DD
and the peak voltage.
NIPPON PRECISION CIRCUITS INC.—4
CF5761 series
3.0V operation
T
a
= 25°C, V
SS
= 0V, V
DD
= 3.0V, X’tal (f
0
= 32.768kHz, C
I
= 35kΩ max, C
G
= 20pF) unless otherwise noted
Rating
Parameter
Operating voltage
Oscillator startup time
1
Frequency voltage characteristic
Current consumption
1
O1, O2 motor output current
2
AI HIGH-level input current
AI LOW-level input current
SN, SEL HIGH-level input current
Symbol
V
DD
t
1
∆f/f
No output load
I
DD
I
OUT
I
IH1
I
IL1
I
IH2
I
IH3
SN LOW-level input current
AO1, AO2, AO3 LOW-level output
current
3
AO1, AO2, AO3 HIGH-level output
current
3
T1 LOW-level output current
T1 HIGH-level output current
F output voltage
4
Built-in capacitance
1.
2.
3.
4.
I
IL2
I
IL3
I
OL1
I
OL2
I
OH1
I
OH2
I
OLT
I
OHT
V
F
C
D
No output load, F output
V
DD
= 2.4V, R
L
= 1kΩ
V
DD
= 3.0V, V
IH
= 3.0V
V
DD
= 3.0V, V
IL
= 0V
V
DD
= 3.0V, V
IH
= 3.0V
V
DD
= 3.0V, V
IH
= 0.5V
V
DD
= 3.0V, V
IL
= 0V
V
DD
= 3.0V, V
IL
= 2.5V
V
DD
= 3.0V, V
OL
= 1.5V
V
DD
= 3.0V, V
OL
= 1.5V
V
DD
= 3.0V, V
OH
= 1.5V
V
DD
= 3.0V, V
OH
= 1.5V
V
DD
= 3.0V, V
OL
= 3.0V
V
DD
= 3.0V, V
OH
= 0V
V
DD
= 2.4V, output
capacitance C
L
= 50pF
V
DD
= 2.4V
Condition
min
1.2
–
–
–
–
2.26
0.6
0.6
0.2
25
0.2
25
900
10
900
10
–
–
0.8
typ
3.0
–
–
0.6
1.3
–
3
3
1
50
1
50
–
–
–
–
20
20
–
See series lineup
max
3.6
5.0
1.0
1.2
µA
2.6
–
7.5
7.5
2
µA
100
2
µA
100
–
µA
–
–
µA
–
–
–
–
µA
µA
V
pF
mA
µA
µA
V
s
ppm/0.1V
Unit
Measured using standard circuits.
R
L
is the resistance of the motor coil connected between O1 and O2.
The rating varies depending on the device selected. Please refer to the series lineup table for details.
F output voltage is the difference voltage, with load capacitor C
L
connected between F and VSS pins, between 0.5V
DD
and the peak voltage.
Measurement Circuit
VDD
C
G
XT
T1
A
I
O
I
DD
A
O1
X'tal
I
I
XTN
C
D
O2
R
L
V
DD
I
AO
I
O
A
A
A
V
I
AI
AO1
SN
AO2
SEL
VSS
AO3
A
A
A
A
A
A
V
O
X’tal f
0
= 32.768kHz, C
I
= 35kΩ max, C
L
= 12.5pF, C
0
= 1.3pF, C
1
= 2.6pF, C
G
= 20pF, R
L
= 400Ω or 1kΩ
NIPPON PRECISION CIRCUITS INC.—5
模拟电子
