CF5760 series
CMOS Analog Clock IC
OVERVIEW
The CF5760 series are analog clock ICs that derive their timing from a 32.768 kHz oscillator element. They
feature a reset function (optional seconds control function) which can be used to maintain accurate time. Vari-
ous alarm functions and motor outputs are available to match a wide range of clock specifications.
FEATURES
PAD LAYOUT
Top view
ꢀ 1.2 to 2.0V operating supply voltage
ꢀ 1.2µA (typ) / 1.5V current consumption
ꢀ 32.768 kHz oscillator circuit
XT
VDD
AI/R
1
2
9
8
ꢀ Oscillator capacitance C and C built-in
G
D
ꢀ Alarm output function
XTN
ꢀ Reset function (optional seconds control function)
ꢀ Input chattering elimination function (AI/R)
ꢀ Chip form (CF5760××)
O1
3
7
6
5
AON
AO
VSS
O2
4
HA5760
(0,0)
Chip size: 0.76 × 1.21 mm
Chip thickness: 300 30 ꢀm
Pad size: 100 × 100 ꢀm
Reverse side: V level
DD
SERIES CONFIGURATION
CF5760AA CF5760BA CF5760CC CF5760DA CF5760EA CF5760FC CF5760GB CF5760HA CF5760JA
CG [pF]
3
25
3
25
3
33
3
25
3
25
3
27
26
3
25
3
Built-in
capacitance1
CD [pF]
33
LOW/HIGH
–
25
LOW/HIGH
–
Alarm input/reset input level
Active level
HIGH/LOW
LOW
HIGH/LOW
LOW
LOW/HIGH
HIGH
LOW/HIGH
LOW
–/LOW
–
LOW/HIGH
HIGH
LOW/HIGH
HIGH
Needleperiod
tCY [s]
1
1
1
1
1
0.0625
62.5
1
1
0.0625
62.5
Motor output
Pulsewidth
tPW [ms]
23.4
23.4
31.25
27.3
1000
31.25
46.875
Pins
AO AON AO AON AO AON AO AON AO AON AO AON AO AON AO AON AO AON
F
(32kHz)
F
(32kHz)
F
(32kHz)
Active level
HIGH LOW HIGH
HIGH LOW HIGH
–
–
–
–
–
–
HIGH LOW HIGH LOW HIGH LOW HIGH
Frequency
fPW [kHz]
4
8
4
8
DC
–
–
–
2
2
DC
–
–
–
2
2
2
2
2
2
DC
–
–
–
Alarm output
Modulation
fCY [Hz]
8 + 1 8 + 1
8 + 1 8 + 1 8 + 1 8 + 1 8 + 1 8 + 1
I
OH min [µA]
900 900 900
900 900 10
10
10
900 900 900
900 900 10
10
10
–
–
–
–
900 900 900 900 900 900 900
900 900 10 10 900 900 10
10
10
IOL min [µA]
1. Built-in capacitance includes the parasitic capacitance.
ORDERING INFORMATION
Device
Package
Chip form
CF5760××
NIPPON PRECISION CIRCUITS INC.—1