NPC CF5746AAB Cmos analog clock ic Datasheet

CF5746 Series
CMOS Analog Clock IC
NIPPON PRECISION CIRCUITS INC.
OVERVIEW
■
The CF5746 Series devices are analog clock ICs that
derive their timing from a 32 kHz oscillator element.
They feature alarm outputs, snooze function and
alarm auto-stop function. They can be configured to
match a wide variety of clock specifications, alarm
functions and motor outputs.
FEATURES
■
■
■
■
32.768 kHz oscillator circuit
• Rf and Rd built-in
• Oscillator capacitance built-in
- CD = 30 pF (typ, excluding CF5746ADC)
- CD = 20 pF (typ, CF5746ADC)
■
■
■
Alarm outputs
• Compatible with electronic sound alarms and
motor bells
• 4-step increasing volume alarm output
(CF5746AAB, ADC, AEA, AFA (AO1), AGA
(AO1))
Snooze function
• Temporarily stops alarm output and then restarts after a fixed time
Debouce circuit (AI/SNZ pin)
Test functions
• Shortening snooze time and auto-stop time
• Increasing motor speed (excluding
CF5746BCA)
Power-ON clear function
1.5 V supply voltage
Chip form
SERIES CONFIGURATION
XT pin CG (pF)
XT pin CG (pF)
Active level
Motor output Needle period tCY (s)
Pulsewidth tPW (ms)
Alarm active level
Pin type
SNZ interface
AI/SNZ input
SNZ time tSNZ (s)
Bounce delay (ms)
SNZ release
Pins
Active level
Frequency fPW (Hz)
Modulation fCY(Hz)
Step 1
Step 2
Duty (%)
Step 3
Step 4
Alarm output
Step 1
Step 2
Step time
Step 3
(s)
Built-in
capacitance
Step 4
IOH min (mA)
IOL min (mA)
Auto-stop tSTOP (s)
Pad layout
Other
CF5746AAB
None
30
HIGH
1
23.4375
LOW
512 Hz
Yes
256
31.25
No
AO
AO
HIGH LOW 1
4096
4096
8+1
8+1
12.5
12.5
25
25
50
50
–
–
0 to 7 0 to 7
7 to 15 7 to 15
15 to
15 to
AS
AS 2
C F 5 7 4 6 A BA
None
30
HIGH
1
31.25
LOW
512 Hz
Yes
256
31.25
No
AO1
AO2
HIGH HIGH
DC
DC
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
−0.8
0.8
−0.8
0.8
−0.8
0.8
−0.8
0.8
128
A
128
A
CF5746BCA
None
30
–
0.125
50% duty
LOW
512 Hz
Yes
256
31.25
No
AO1
AO2
HIGH HIGH
DC
DC
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
CF5746ADC
None
20
HIGH
1
46.875
HIGH
512 Hz
No
256
31.25
No
AO
AO
HIGH LOW 1
2048
2048
8+1
8+1
6.26
6.26
12.5
12.5
25
25
50
50
0 to 3 0 to 3
3 to 7 3 to 7
7 to 31
7 to 31
CF5746AEA
None
30
HIGH
1
31.25
LOW
512 Hz
Yes
256
31.25
No
AO
AO
HIGH LOW 1
2048
2048
8+1
8+1
6.26
6.26
12.5
12.5
50
50
–
–
0 to 7 0 to 7
7 to 15 7 to 15
15 to
15 to
AS
AS
31 to
31 to
–
–
AS
AS
−0.8
−0.8
−0.8
−0.8
−0.8
−0.8
0.8
0.8
0.002 0.002
0.8
0.8
128
128
128
B
A
A
Power-ON clear, oscillator Rd and Rf built-in
–
–
C F 5 7 4 6 A FA
None
30
HIGH
1
46.875
LOW
Pull-up
Yes
256
31.25
Yes (2 s)
AO1
AO2
HIGH HIGH
2048
DC
8+1
–
12.5
–
25
–
50
–
–
–
0 to 7
–
7 to 15
–
15 to
–
AS
C F 5 7 4 6 AG A
None
30
HIGH
1
31.25
LOW
Pull-up
Yes
256
31.25
Yes (2 s)
AO1
AO2
HIGH HIGH
2048
DC
8+1
–
6.26
–
12.5
–
50
–
–
–
0 to 7
–
7 to 15
–
15 to
–
AS
–
–
–
–
−0.8
0.002
−0.8
0.8
−0.8
0.002
−0.8
0.8
128
A
128
A
1. AO has the opposite polarity to AO only when output (same phase when non-active).
2. AS = auto-stop
NIPPON PRECISION CIRCUITS—1
CF5746 Series
PAD DIMENSIONS
L ayout
Dimensions (µm)
No.
10
9
8
1
2
7
3
Y
4
6
5
(0, 0)
X
A (ex. BCA)
B (BCA)
X
Y
1
VDD
VSS
166
1210
2
VSS
VDD
166
882
3
OUT1
AI/SNZ
166
474
4
AI/SNZ
AO1
166
228
5
TEST
AO2
444
169
6
OUT2
OUT1
1444
169
7
AO (AO1)
OUT2
1444
513
8
AO (AO2)
TEST
1444
1219
9
XT
XT
1444
1516
10
XT
XT
1192
1531
Chip size: 1.61 × 1.70 mm
Chip thickness: 400 ± 30 µm
Pad size: 100 × 100 µm
Chip surface is at V DD potential.
BLOCK DIAGRAM
TEST
4- Stage
Divider
XT
XT
AO(AO2)
VSS
11- Stage
Divider
Output
Control
OUT1
OUT2
CD
AO Duty
Control
AO(AO1)
VDD
Alarm
Out
4- Stage
Divider
Snooze
Counter
Input
Control
AI/SNZ
NIPPON PRECISION CIRCUITS—2
CF5746 Series
PIN DESCRIPTION
Name
Description
VDD
Positive supply voltage pin
VSS
Ground pin
XT
Oscillator input pin
XT
Oscillator output pin
OUT1
Motor output pin 1
OUT2
Motor output pin 2
AI/SNZ
Alarm/snooze input pin
AO (AO1)
Alarm output pin
AO (AO2)
Alarm output pin
TEST
Test pin
SPECIFICATIONS
Absolute Maximum Ratings
P arameter
Rating
Unit
V DD − V SS
−0.3 to 5.0
V
Input voltage range
V IN
V SS to V DD
V
Operating temperature range
Topr
−30 to 70
°C
Storage temperature range
Tstg
−40 to 125
°C
Supply voltage range
Symbol
Condition
Electrical Characteristics
Ta = 25 °C, VDD = 1.5 V, VSS = 0 V, f0 = 32.768 kHz unless otherwise noted
Rating
P arameter
Operating voltage
Symbol
V DD
Condition
Unit
min
typ
max
1.2
–
2.0
V
–
1.0
2.0
µA
No load
Current consumption1
IDD
Motor output current
IMOT
V DD = 1.2 V, RL = 200 Ω
±3.8
–
–
mA
Alarm HIGH-level output current
IOH
V DD = 1.2 V, VOH = 0.7 V
−0.8
−1.5
–
mA
V DD = 1.2 V, VOL = 0.5 V
0.8
1.5
–
mA
2
15
30
µA
Alarm LOW-level output current2
Alarm LOW-level output current3
IOL
AI/SNZ HIGH-level input voltage
V IH
V DD − 0.2
–
V DD
V
AI/SNZ LOW-level input voltage
V IL
V SS
–
V SS + 0.2
V
AI/SNZ HIGH-level output current
IOH
VOH = V DD − 1.5 V
−1
−3
−10
µA
AI/SNZ LOW-level output current
IOL
VOL = V DD + 1.5 V
1
3
10
µA
Oscillator frequency stability
∆f/f
V DD = 1.2 to 2.0 V
–
0.5
1
ppm/0.1 V
VDD-to-XT pin built-in
capacitance
CG
–
None
–
pF
VDD-to-XT pin built-in
capacitance
Excluding CF5746ADC
–
30
–
pF
CD
CF5746ADC
–
20
–
pF
Excluding
CF5746AFA,
AGA
1. All pins except the supply and crystal oscillator pins are open.
2. CF5746AAB, ABA, BCA, AEA, AFA (AO2), AGA (AO2)
3. CF5746ADC, AFA (AO1), AGA (AO2)
NIPPON PRECISION CIRCUITS—3
CF5746 Series
FUNCTIONAL DESCRIPTION
Alarm Input/Output
AI/SNZ input Deboucing circuit
A bounce delay is provided on the AI/SNZ input,
regardless of whether the input is LOW or HIGH, to
eliminate erroneous operation caused by input
bounce. For tON ≤ 31.25 ms, any alarm input or
snooze input signal is ignored. For tON ≥ 62.5 ms,
the alarm input or snooze input is accepted.
Alarm/snooze function
An active level on AI/SNZ for ≥ 62.5 ms triggers the
alarm function, and alarm operation starts.
During alarm output, an active level on AI/SNZ for ≥
62.5 ms triggers the snooze function. In snooze
mode, the alarm output is temporarily stopped for an
interval of approximately 256 seconds. After this
interval ends, alarm output restarts.
CF5746AAB
LOW
Yes
256
No
Alarm active level
SNZ interface
SNZ time tSNZ(s)
SNZ release
C F 5 7 4 6 A BA
LOW
Yes
256
No
CF5746BCA
LOW
Yes
256
No
For devices other than the CF5746ADC, the snooze
interval count is restarted from 0 if another snooze
input is received while in snooze mode. After the
snooze interval ends, alarm output restarts.
For the CF5746AFA and AGA, an active level on
AI/SNZ for ≥ 2 s in snooze mode cancels the snooze
and immediately the alarm signal restarts (snooze
release).
CF5746ADC
HIGH
No
256
No
CF5746AEA
LOW
Yes
256
No
C F 5 7 4 6 A FA
LOW
Yes
256
Yes (2 s)
C F 5 7 4 6 AG A
LOW
Yes
256
Yes (2 s)
CF5746ADC
AO
AO
HIGH
LOW 1
2048
2048
8+1
8+1
6.26
6.26
12.5
12.5
25
25
50
50
0 to 3
0 to 3
3 to 7
3 to 7
CF5746AEA
AO
AO
HIGH
LOW 1
2048
2048
8+1
8+1
6.26
6.26
12.5
12.5
50
50
–
–
0 to 7
0 to 7
7 to 15 7 to 15
C F 5 7 4 6 A FA
AO1
AO2
HIGH
HIGH
2048
DC
8+1
–
12.5
–
25
–
50
–
–
–
0 to 7
–
7 to 15
–
C F 5 7 4 6 AG A
AO1
AO2
HIGH
HIGH
2048
DC
8+1
–
6.26
–
12.5
–
50
–
–
–
0 to 7
–
7 to 15
–
Alarm output
The CF5746 Series devices feature a combination of
various alarm output options to cover a wide range of
clock specifications.
■
■
Step output function (CF5746AAB, ADC, AEA,
AFA (AO1), AGA (AO1))
The alarm output increases in volume over 3 or 4
steps, depending on the device selected.
Auto-stop function
After the alarm has been active continuously for
128 seconds, auto-stop mode becomes active and
the output stops.
Pins
Active level
Frequency fPW (Hz)
Modulation fCY (Hz)
Step 1
Step 2
Duty (%)
Step 3
Step 4
Step 1
Step 2
Step time
(s)
Step 3
Step 4
Auto-stop tSTOP (s)
CF5746AAB
AO
AO
HIGH
LOW 1
4096
4096
8+1
8+1
12.5
12.5
25
25
50
50
–
–
0 to 7
0 to 7
7 to 15 7 to 15
15 to
15 to AS
AS 2
–
–
128
C F 5 7 4 6 A BA
AO1
AO2
HIGH
HIGH
DC
DC
–
–
–
–
–
–
–
–
–
–
–
–
–
–
CF5746BCA
AO1
AO2
HIGH
HIGH
DC
DC
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
128
128
7 to 31
7 to 31
31 to AS 31 to AS
128
15 to AS 15 to AS 15 to AS
–
–
128
–
128
–
15 to AS
–
–
–
–
128
1. AO has the opposite polarity to AO only when output (same phase when non-active).
2. AS = auto-stop
NIPPON PRECISION CIRCUITS—4
CF5746 Series
Motor Output
The motor output can be matched to the clock using
a step needle movement (3 options) or a continuous
needle movement (1 option), depending on the
device selected.
CF5746AAB
C F 5 7 4 6 A BA
CF5746BCA
CF5746ADC
CF5746AEA
C F 5 7 4 6 A FA
C F 5 7 4 6 AG A
HIGH
1
23.4375
Step
HIGH
1
31.25
Step
–
0.125
50% duty
Continuous
HIGH
1
46.875
Step
HIGH
1
31.25
Step
HIGH
1
46.875
Step
HIGH
1
31.25
Step
Active level
Needle period tCY (s)
Pulsewidth tPW (ms)
Movement
Test Functions
Open-circuit output
When AI/SNZ is open circuit, a 512 Hz tone is
output (except on the CF5746AFA and AGA).
Time shortening function
This function is used to reduce the alarm output
snooze interval and the auto-stop time. This function
is active under either of the following conditions.
■
■
TEST must be HIGH.
OUT1 and OUT2 must both be HIGH.
Note that devices other than the CF5746BCA (that
is, the step needle movement devices) also have
reduced motor output needle periods for the case
where TEST is HIGH.
Motor output needle period
Alarm output
Auto-stop time
Snooze interval
Device
1/4
Unmodulated
1/1024
1/1024
AAB
ADC
AEA
AFA (AO1)
AGA (AO1)
TEST = HIGH
1/4
–
1/1024
1/1024
ABA
AFA (AO2)
AGA (AO2)
–
–
1/1024
1/1024
BCA
–
Unmodulated
1/1024
1/1024
AAB
ADC
AEA
AFA (AO1)
AGA (AO1)
OUT1 = OUT2 = HIGH
–
–
1/1024
1/1024
ABA
AFA (AO2)
AGA (AO2)
–
–
1/1024
1/1024
BCA
Power-ON Clear Function
When power is first applied, the snooze state and
alarm auto-stop state are reset to their default values.
NIPPON PRECISION CIRCUITS—5
CF5746 Series
TIMING DIAGRAMS
Motor Output (Step Movement): excluding CF5746BCA
Alarm Output: CF5746AAB, ADC, AEA, AFA (AO1), AGA (AO1)
tPW
OUT1
tPW
OUT2
tCY
tCY
1sec
1sec
AO
fPW
fCY1
fCY2
AO
Motor Output (Continuous Movement): CF5746BCA
OUT1
tCY
125msec
OUT2
tCY
125msec
Alarm Step Output: CF5746AAB, ADC, AEA, AFA (AO1), AGA (AO1)
AO
AO
fPW
NIPPON PRECISION CIRCUITS—6
CF5746 Series
Alarm/Snooze Input and Alarm Output
tON
tON
62.5
msec
sec
2 *4
AI/ SNZ
tON
512Hz *3
tON
62.5
msec
62.5
msec
AO, AO1*1
tON
t
62.5
msec
*5
SNZ
(Restart)
tSTOP= 128
sec
tSNZ= 0 *4
sec
tSNZ
AO
*2
AO1 , AO2
(DC Output)
*1: CF5746AFA, AGA
*2: CF5746ABA, BCA
*3: CF5746AAB, ABA, BCA, ADC, AEA
*4: CF5746AFA, AGA
*5: CF5746AAB, ABA, BCA, AEA, AFA, AGA
Alarm/Snooze Input (Deboucing Circuit)
AI/ SNZ
(L to H)
tCH
tON
AI/ SNZ
(H to L)
NIPPON PRECISION CIRCUITS INC. reserves the right to make changes to the products described in this data sheet in order to
improve the design or performance and to supply the best possible products. Nippon Precision Circuits Inc. assumes no responsibility for
the use of any circuits shown in this data sheet, conveys no license under any patent or other rights, and makes no claim that the circuits
are free from patent infringement. Applications for any devices shown in this data sheet are for illustration only and Nippon Precision
Circuits Inc. makes no claim or warranty that such applications will be suitable for the use specified without further testing or modification.
The products described in this data sheet are not intended to use for the apparatus which influence human lives due to the failure or
malfunction of the products. Customers are requested to comply with applicable laws and regulations in effect now and hereinafter,
including compliance with export controls on the distribution or dissemination of the products. Customers shall not export, directly or
indirectly, any products without first obtaining required licenses and approvals from appropriate government agencies.
NIPPON PRECISION CIRCUITS INC.
NIPPON PRECISION CIRCUITS INC.
4-3, 2-chome Fukuzumi
Koutou-ku, Tokyo 135-8430, Japan
Telephone: 03-3642-6661
Facsimile: 03-3642-6698
NC9417AE
1996.04
NIPPON PRECISION CIRCUITS—7
Similar pages