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CF5746 Series
NIPPON PRECISION CIRCUITS INC.
CMOS Analog Clock IC
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.
s
s
FEATURES
s
s s
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)
s s s
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 - -0.8 0.8 128 A - -0.8 0.8 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 0.8 128 A - - -0.8 0.8 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 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 - -0.8 0.002 128 A - -0.8 0.8 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 0.002 128 A - -0.8 0.8
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
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 No. A (ex. BCA)
10 9 1 2 8
Dimensions (m) X 166 166 166 166 444 1444 1444 1444 1444 1192 Y 1210 882 474 228 169 169 513 1219 1516 1531
B (BCA) VSS VDD AI/SNZ AO1 AO2 OUT1 OUT2 TEST XT XT
1 2 3 4 5 6
VDD VSS OUT1 AI/SNZ TEST OUT2 AO (AO1) AO (AO2) XT XT
3 Y 4 (0, 0) X 5
7 6
7 8 9 10
Chip size: 1.61 x 1.70 mm Chip thickness: 400 30 m Pad size: 100 x 100 m Chip surface is at V DD potential.
BLOCK DIAGRAM
TEST VDD VSS
XT XT CD
4- Stage Divider
11- Stage Divider
Output Control
OUT1 OUT2
AO Duty Control
AO(AO1) AO(AO2)
4- Stage Divider
Alarm Out
Snooze Counter
Input Control
AI/SNZ
NIPPON PRECISION CIRCUITS--2
CF5746 Series
PIN DESCRIPTION
Name VDD VSS XT XT OUT1 OUT2 AI/SNZ AO (AO1) AO (AO2) TEST Positive supply voltage pin Ground pin Oscillator input pin Oscillator output pin Motor output pin 1 Motor output pin 2 Alarm/snooze input pin Alarm output pin Alarm output pin Test pin Description
SPECIFICATIONS
Absolute Maximum Ratings
P arameter Supply voltage range Input voltage range Operating temperature range Storage temperature range Symbol V DD - V SS V IN Topr Tstg Condition Rating -0.3 to 5.0 V SS to V DD -30 to 70 -40 to 125 Unit V V C C
Electrical Characteristics
Ta = 25 C, VDD = 1.5 V, VSS = 0 V, f0 = 32.768 kHz unless otherwise noted
Rating P arameter Operating voltage Current consumption1 Motor output current Alarm HIGH-level output current Alarm LOW-level output current2 Alarm LOW-level output current3 AI/SNZ HIGH-level input voltage AI/SNZ LOW-level input voltage AI/SNZ HIGH-level output current AI/SNZ LOW-level output current Oscillator frequency stability VDD-to-XT pin built-in capacitance VDD-to-XT pin built-in capacitance IOL V IH V IL IOH IOL f/f CG Excluding CF5746ADC CD CF5746ADC
VOH = V DD - 1.5 V VOL = V DD + 1.5 V
Symbol V DD IDD IMOT IOH
Condition min 1.2 No load - V DD = 1.2 V, RL = 200 V DD = 1.2 V, VOH = 0.7 V V DD = 1.2 V, VOL = 0.5 V 3.8 -0.8 0.8 2 V DD - 0.2 V SS Excluding CF5746AFA, AGA -1 1 - - - - 1.0 - -1.5 1.5 15 - - -3 3 0.5 None 30 20 2.0 - - - 30 V DD V SS + 0.2 -10 10 1 - - - typ - max 2.0
Unit V A mA mA mA A V V A A ppm/0.1 V pF pF pF
V DD = 1.2 to 2.0 V
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 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)
Alarm active level SNZ interface SNZ time tSNZ(s) SNZ release
Alarm output The CF5746 Series devices feature a combination of various alarm output options to cover a wide range of clock specifications.
s
s
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.
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 - - - - - - - - - - - - - - - - 128 - - CF5746BCA AO1 AO2 HIGH HIGH DC DC - - - - - - - - - - - - - - - - 128 - - 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 7 to 31 7 to 31 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 - - - 128 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 - 15 to AS - 128 - -
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)
15 to AS 15 to AS 15 to AS - 128 - -
31 to AS 31 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 Active level Needle period tCY (s) Pulsewidth tPW (ms) Movement HIGH 1 23.4375 Step C F 5 7 4 6 A BA HIGH 1 31.25 Step CF5746BCA - 0.125 50% duty Continuous CF5746ADC HIGH 1 46.875 Step CF5746AEA HIGH 1 31.25 Step C F 5 7 4 6 A FA HIGH 1 46.875 Step C F 5 7 4 6 AG A HIGH 1 31.25 Step
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.
s s
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 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 - 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
Device
BCA
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
1sec AO
tCY
1sec
fPW
AO
fCY1
fCY2
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
AI/ SNZ
62.5 msec
tON
sec
2 *4
tON
512Hz *3 AO, AO1*1
62.5 msec
tON
62.5 msec
tON
62.5 msec
(Restart)
tSNZ *5
tSTOP= 128
sec
tSNZ= 0 *4
sec
tSNZ
AO
AO1 , AO2 (DC Output)
*2
*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
AI/ SNZ (H to L)
tON
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. 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 INC.
NIPPON PRECISION CIRCUITS--7

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