NPC CF5760 Cmos analog clock ic Datasheet

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. Various alarm functions and motor outputs are available to match a wide range of clock specifications.
FEATURES
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■
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PAD LAYOUT
1.2 to 2.0V operating supply voltage
1.2µA (typ) / 1.5V current consumption
32.768 kHz oscillator circuit
Oscillator capacitance CG and CD built-in
Alarm output function
Reset function (optional seconds control function)
Input chattering elimination function (AI/R)
Chip form (CF5760××)
(Unit: mm)
(760, 1210)
VDD
1
AI/R
2
O1
3
O2
4
9
XT
8
XTN
7
AON
6
AO
5
VSS
HA5760
(0,0)
Chip size: 0.76 × 1.21 mm
Chip thickness: 300 ± 30 µm
Pad size: 100 × 100 µm
Reverse side: VDD level
SERIES CONFIGURATION
CF5760AA CF5760BA CF5760CC CF5760DA CF5760EA CF5760FC CF5760GB CF5760HA
CG [pF]
3
3
3
3
3
27
3
3
25
25
33
25
25
33
26
25
25
HIGH/LOW
HIGH/LOW
LOW/HIGH
LOW/HIGH
–/LOW
LOW/HIGH
LOW/HIGH
LOW/HIGH
LOW/HIGH
LOW
LOW
HIGH
LOW
–
–
HIGH
HIGH
–
1
1
1
1
1
0.0625
1
1
0.0625
23.4
23.4
31.25
27.3
1000
62.5
31.25
46.875
62.5
Built-in
capacitance1 C [pF]
D
Alarm input/reset input level
Active level
Motor output
Needle period
tCY [s]
Pulsewidth
tPW [ms]
Pins
Active level
CF5760JA
3
AO
AON
AO
HIGH LOW HIGH
AON
F
(32kHz)
AO
AON
AO
HIGH LOW HIGH
Frequency
Alarm output fPW [kHz]
4
4
DC
–
Modulation
fCY [Hz]
8
8
–
–
8+1 8+1
IOH min [µA]
900
900
900
10
900
IOL min [µA]
900
900
10
10
900
2
2
AON
F
(32kHz)
AO
AON
–
–
AO
AON
AO
AON
AO
AON
AO
HIGH LOW HIGH LOW HIGH LOW HIGH
DC
–
–
–
2
2
2
2
2
2
–
–
–
–
8+1 8+1 8+1 8+1 8+1 8+1
900
900
10
–
–
900
900
900
900
900
900
10
10
–
–
900
900
10
10
900
AON
F
(32kHz)
DC
–
–
–
900
900
10
900
10
10
1. Built-in capacitance includes the parasitic capacitance.
ORDERING INFORMATION
Device
Package
CF5760××
Chip form
SEIKO NPC CORPORATION —1
CF5760 series
BLOCK DIAGRAM
VDD
VSS
7 Stage
Divider
9 Stage
Divider
CG
XT
CD
XTN
Reset
Input
AI/R
Alarm
Input
Motor Output
Control
Alarm Output
Control
AO
O1
AON
O2
PAD DESCRIPTION/DIMENSIONS
Dimensions [µm]
No.
Name
Description
X
Y
1
VDD
Supply
155
1065
2
AI/R
Alarm input and reset input
155
854
3
O1
Motor output 1
155
620
4
O2
Motor output 2
145
145
5
VSS
Ground
615
145
6
AO
Alarm output 1
615
325
7
AON
Alarm output 2
615
505
8
XTN
Oscillator output
615
746
9
XT
Oscillator input
615
1065
SEIKO NPC CORPORATION —2
CF5760 series
SPECIFICATIONS
Absolute Maximum Ratings
Parameter
Rating
Unit
VDD − VSS
−0.3 to 5.0
V
Input voltage range
VIN
VSS ≤ VIN ≤ VDD
V
Operating temperature range
Topr
−30 to 80
°C
Storage temperature range
Tstg
−65 to 150
°C
Supply voltage range
Symbol
Condition
Electrical Characteristics
Ta = 25°C, VDD = 1.5V, VSS = 0V, CG = 23pF, CD = 25pF, X’tal (f0 = 32.768kHz, CI = 50kΩ max) unless otherwise noted
Rating
Parameter
Symbol
Condition
Unit
min
typ
max
1.2
–
2.0
V
Operating voltage
VDD
Current consumption
IDD
O1 = O2 = open
–
1.2
4.0
µA
Oscillator start-up time
tSTA
VDD = 1.2V
–
–
5.0
s
Motor output current
IMOT
VDD = 1.2V, RL = 200Ω1
4.0
–
–
mA
AI/R HIGH-level input current
IIH
VDD = 1.5V
2
4
8
µA
AI/R LOW-level input current
IIL
VDD = 1.5V
2
4
8
µA
Oscillator frequency stability
∆f/f
VDD = 1.2 to 2.0V
–
0.5
1.0
ppm/0.1V
Alarm LOW-level output current2
(AO, AON)
IOL1
VDD = 1.5V, VOL = 0.75V
900
2000
–
µA
IOL2
VDD = 1.5V, VOL = 0.75V
10
30
–
µA
IOH1
VDD = 1.5V, VOH = 0.75V
900
2000
–
µA
IOH2
VDD = 1.5V, VOH = 0.75V
10
30
–
µA
VDD = 1.2V, CL = 50pF
0.4
–
–
V
Alarm HIGH-level output current2
(AO, AON)
F output voltage3
Internal capacitance4
VF
CG
CD
pF
Refer to the SERIES LINEUP
pF
1. RL is the load resistance connected between O1 and O2.
2. CF5760AA/ CC/ FC/ HA: If the outputs (AO or AON) are short circuit, the output current is IAO ≥ 900 µA.
3. The F output voltage rating, VF , when a load capacitance, CL, is connected between pin F and VSS, is the difference voltage between the center voltage, 0.5VDD, and the peak voltage.
4. CG is the capacitance between VDD and XT. CD is the capacitance between VDD and XTN.
SEIKO NPC CORPORATION —3
CF5760 series
FUNCTIONAL DESCRIPTION
Motor Output
Motor output waveform (step motor driver)
tPW
O1
(Active High)
tPW
O2
(Active High)
tCY
tCY
tCY : Needle period
tPW : Pulse width
Motor output waveform (sweep motor driver)
tPW
62.5ms
O1
tCY
tCY
62.5ms
62.5ms
tCY : Needle period
tPW : Pulse width
O2
tPW
62.5ms
Input Chattering Elimination Function (AI/R)
A bounce delay is provided on the AI/R input to eliminate erroneous operation caused by input bounce (chattering).
tON
AI/R
(Active Low)
tON < 62.5ms: input is ignored.
62.5 ≤ tON ≤ 125ms: indeterminate
tON > 125ms: input is accepted.
Input Control Functions
When AI/R is open circuit, a 256Hz signal is output.
When AI/R is HIGH or LOW, it selects the alarm (HIGH)/reset (LOW) function or reset (HIGH)/alarm (LOW)
function depending on the version.
SEIKO NPC CORPORATION —4
CF5760 series
Reset Function (optional seconds control function)
When AI/R goes active level for a reset, the motor output stops. When the reset is released, the first motor output pulse occurs on the output pin opposite to that which had the last output pulse immediately before the reset.
AI/R
(Active Low)
tPW
tON
O1
(Active High)
tPW
O2
(Active High)
tCY
+0
tCY
tCY −125msec
Alarm Output
Alarm output waveform
tON
AI/R
(Active High)
AO
(Active High)
fCY (Hz)
fPW(Hz)
*1
AON
(Active Low)
*1: Opposite phase to AO.
fPW = alarm fundamental frequency
fCY = alarm modulation frequency
F Output Function
The AON pin may be replaced by the F pin which is used to output a 32kHz signal (unaffected by the reset
function).
SEIKO NPC CORPORATION —5
CF5760 series
TYPICAL APPLICATION CIRCUITS
Alarm (HIGH)/Reset (LOW), Piezoelectric alarm
VDD
CG
XT
O1
XTN
O2
M
X'tal
3kΩ
Alarm
Switch
AO
Piezo
Speaker
AI/R
AON
Reset
Switch
VSS
Reset (HIGH)/Alarm (LOW), DC Output, F Output
VDD
Motor
CG
XT
O1
XTN
O2
M Bell
M
X'tal
Reset
Switch
AO
AI/R
F
3kΩ
Alarm
Switch
VSS
SEIKO NPC CORPORATION —6
CF5760 series
Please pay your attention to the following points at time of using the products shown in this document.
The products shown in this document (hereinafter “Products”) are not intended to be used for the apparatus that exerts harmful influence on
human lives due to the defects, failure or malfunction of the Products. Customers are requested to obtain prior written agreement for such
use from SEIKO NPC CORPORATION (hereinafter “NPC”). Customers shall be solely responsible for, and indemnify and hold NPC free and
harmless from, any and all claims, damages, losses, expenses or lawsuits, due to such use without such agreement. NPC reserves the right
to change the specifications of the Products in order to improve the characteristic or reliability thereof. NPC makes no claim or warranty that
the contents described in this document dose not infringe any intellectual property right or other similar right owned by third parties.
Therefore, NPC shall not be responsible for such problems, even if the use is in accordance with the descriptions provided in this document.
Any descriptions including applications, circuits, and the parameters of the Products in this document are for reference to use the Products,
and shall not be guaranteed free from defect, inapplicability to the design for the mass-production products without further testing or
modification. Customers are requested not to export or re-export, directly or indirectly, the Products to any country or any entity not in
compliance with or in violation of the national export administration laws, treaties, orders and regulations. Customers are requested
appropriately take steps to obtain required permissions or approvals from appropriate government agencies.
SEIKO NPC CORPORATION
1-9-9, Hatchobori, Chuo-ku,
Tokyo 104-0032, Japan
Telephone: +81-3-5541-6501
Facsimile: +81-3-5541-6510
http://www.npc.co.jp/
Email: [email protected]
NC9812DE
2006.04
SEIKO NPC CORPORATION —7
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