CF5746AAB NPC | Alldatasheet

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NIPPON PRECISION CIRCUITS—1 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.

FEATURES

n 32.768 kHz oscillator circuit f and R d built-in

  • Oscillator capacitance built-in D = 30 pF (typ, excluding CF5746ADC) D = 20 pF (typ, CF5746ADC) n Alarm outputs
  • Compatible with electronic sound alarms and motor bells
  • 4-step increasing volume alarm output (CF5746AAB, ADC, AEA, AFA (AO1), AGA (AO1)) n Snooze function
  • Temporarily stops alarm output and then re- starts after a fixed time n Debouce circuit (AI/SNZ pin) n Test functions
  • Shortening snooze time and auto-stop time
  • Increasing motor speed (excluding CF5746BCA) n Power-ON clear function n

1.5 V supply voltage

n Chip form SERIES CONFIGURATION CF5746AAB CF5746ABA CF5746BCA CF5746ADC CF5746AEA CF5746AFA CF5746AGA Built-in capacitance XT pin C G (pF) None None None None None None None XT pin C G (pF) 30 30 30 20 30 30 30 Motor output Active level HIGH HIGH – HIGH HIGH HIGH HIGH Needle period t CY (s) 1 1 0.125 1111 Pulsewidth t PW AI/SNZ input Alarm active level LOW LOW LOW HIGH LOW LOW LOW Pin type 512 Hz 512 Hz 512 Hz 512 Hz 512 Hz Pull-up Pull-up SNZ interface Yes Yes Yes No Yes Yes Yes SNZ time t SNZ (s) 256 256 256 256 256 256 256 SNZ release No No No No No Yes (2 s) Yes (2 s) Alarm output Pins AO A O AO1 AO2 AO1 AO2 AO A O AO A O AO1 AO2 AO1 AO2 Active level HIGH LOW 1. AO has the opposite polarity to AO only when output (same phase when non-active). HIGH HIGH HIGH HIGH HIGH LOW HIGH LOW HIGH HIGH HIGH HIGH Frequency f PW (Hz) 4096 4096 DC DC DC DC 2048 2048 2048 2048 2048 DC 2048 DC Modulation f CY Duty (%) Step 3 50 50 –––– 2 5 2 5 5 0 5 0 5 0 – 5 0 – Step time (s) Step 1 0 to 7 0 to 7 –––– 0 t o 3 0 t o 3 0 t o 7 0 t o 7 0 t o 7 – 0 t o 7 – Step 2 7 to 15 7 to 15 –––– 3 t o 7 3 t o 7 7 t o 1 5 7 t o 1 5 7 t o 1 5 – 7 t o 1 5 – Step 3 15 to AS 2. AS = auto-stop 15 to AS –––– 7 t o 3 1 7 t o 3 1 15 to AS 15 to AS 15 to AS – 15 to AS – AS 31 to I OH min (mA) 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 I OL Auto-stop t STOP (s) 128 128 128 128 128 128 128 P a d l a y o u t AABAAAA Other Power-ON clear, oscil lator R d and R f built-in

NIPPON PRECISION CIRCUITS—2 PAD DIMENSIONS BLOCK DIAGRAM No. Layout Dimensions (µm) 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

O (AO2) TEST 1444 1219 9X T 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. (0, 0) X Y XT TEST VSS XT AO(AO1) AO(AO2) OUT1 OUT2 AI/SNZ 4- Stage Divider 11- Stage Divider 4- Stage DividerAO Duty Control Snooze Counter Output Control Input Control Alarm Out VDD CD

NIPPON PRECISION CIRCUITS—3 PIN DESCRIPTION SPECIFICATIONS Absolute Maximum Ratings

Electrical Characteristics

T a = 25 C, V DD = 1.5 V , V SS = 0 V , f = 32.768 kHz unless otherwise noted 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 A O (AO2) Alarm output pin TEST T est pin Parameter Symbol Condition Rating Unit Supply voltage range V DD V SS 0.3 to 5.0 V Input voltage range V IN V SS to V DD V Operating temperature range T opr 30 to 70 C Storage temperature range T stg 40 to 125 C Parameter Symbol Condition Rating Unit min typ max Operating voltage V DD No load 1.2 – 2.0 V Current consumption 1. All pins except the supply and crystal oscillator pins are open. I DD – 1.0 2.0 µA Motor output current I MOT V DD = 1.2 V, R L = 200 W ±3.8 – – mA Alarm HIGH-level output current I OH V DD = 1.2 V, V OH = 0.7 V 0.8 1.5 – mA Alarm LOW-level output current 2. CF5746AAB, ABA, BCA, AEA, AFA (AO2), AGA (AO2) I OL V DD = 1.2 V, V OL = 0.5 V 0.8 1.5 – mA Alarm LOW-level output current 3. CF5746ADC, AFA (AO1), AGA (AO2) 21 5 3 0 µ A 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 SS + 0.2 V AI/SNZ HIGH-level output current I OH V OH = V DD 1.5 V Excluding CF5746AFA, AGA 10 µA AI/SNZ LOW-level output current I OL V OL = V DD + 1.5 V 13 1 0 µ A Oscillator frequency stability D f/f V DD = 1.2 to 2.0 V – 0.5 1 ppm/0.1 V VDD-to-XT pin built-in capacitance C G – None – pF VDD-to-XT pin built-in capacitance C D Excluding CF5746ADC – 30 – pF CF5746ADC – 20 – pF

NIPPON PRECISION CIRCUITS—4 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 t ON 31.25 ms, any alarm input or snooze input signal is ignored. For t ON 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. 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). Alarm output The CF5746 Series devices feature a combination of various alarm output options to cover a wide range of clock specifications. n 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. n Auto-stop function After the alarm has been active continuously for 128 seconds, auto-stop mode becomes active and the output stops. CF5746AAB CF5746ABA CF5746BCA CF5746ADC CF5746AEA CF5746AFA CF5746AGA Alarm active level LOW LOW LOW HIGH LOW LOW LOW SNZ interface Yes Yes Yes No Yes Yes Yes SNZ time t SNZ (s) 256 256 256 256 256 256 256 SNZ release No No No No No Yes (2 s) Yes (2 s) CF5746AAB CF5746ABA CF5746BCA CF5746ADC CF5746AEA CF5746AFA CF5746AGA Pins AO A O AO1 AO2 AO1 AO2 AO A O AO A O AO1 AO2 AO1 AO2 Active level HIGH LOW 1. AO has the opposite polarity to AO only when output (same phase when non-active). HIGH HIGH HIGH HIGH HIGH LOW HIGH LOW HIGH HIGH HIGH HIGH Frequency f PW (Hz) 4096 4096 DC DC DC DC 2048 2048 2048 2048 2048 DC 2048 DC Modulation f CY Duty (%) Step 3 50 50 –––– 2 5 2 5 5 0 5 0 5 0 – 5 0 – Step time (s) Step 1 0 to 7 0 to 7 –––– 0 t o 3 0 t o 3 0 t o 7 0 t o 7 0 t o 7 – 0 t o 7 – Step 2 7 to 15 7 to 15 –––– 3 t o 7 3 t o 7 7 t o 1 5 7 t o 1 5 7 t o 1 5 – 7 t o 1 5 – Step 3 15 to AS 2. AS = auto-stop 1 5 t o A S –––– 7 t o 3 1 7 t o 3 1 1 5 t o A S 1 5 t o A S 1 5 t o A S – 1 5 t o A S – Auto-stop t STOP (s) 128 128 128 128 128 128 128

NIPPON PRECISION CIRCUITS—5 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. 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. n TEST must be HIGH. n 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. Power-ON Clear Function When power is first applied, the snooze state and alarm auto-stop state are reset to their default values. CF5746AAB CF5746ABA CF5746BCA CF5746ADC CF5746AEA CF5746AFA CF5746AGA Active level HIGH HIGH – HIGH HIGH HIGH HIGH Needle period t CY (s) 1 1 0.125 1111 Pulsewidth t PW Movement Step Step Continuous Step Step Step Step TEST = HIGH OUT1 = OUT2 = HIGH Motor output needle period 1/4 1/4 –––– Alarm output Unmodulated – – Unmodulated – – Auto-stop time 1/1024 1/1024 1/1024 1/1024 1/1024 1/1024 Snooze interval 1/1024 1/1024 1/1024 1/1024 1/1024 1/1024 Device AAB ADC AEA AFA (AO1) AGA (AO1) ABA AFA (AO2) AGA (AO2) BCA AAB ADC AEA AFA (AO1) AGA (AO1) ABA AFA (AO2) AGA (AO2) BCA

NIPPON PRECISION CIRCUITS—6 TIMING DIAGRAMS Motor Output (Step Movement): excluding CF5746BCA Alarm Output: CF5746AAB, ADC, AEA, AFA (AO1), AGA (AO1) Motor Output (Continuous Movement): CF5746BCA Alarm Step Output: CF5746AAB, ADC, AEA, AFA (AO1), AGA (AO1) OUT1 OUT2 AO AO tPW tPW tCY 1sec tCY 1sec fCY1 fCY2 fPW OUT1 OUT2 tCY 125msec tCY 125msec AO AO fPW

NIPPON PRECISION CIRCUITS—7 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 P recision 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 failu re or malfunction of the products. Customers are requested to comply with applicable laws and regulations in effect now and hereinaft er, including compliance with export controls on the distribution or dissemination of the products. Customers shall not export, dir ectly 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. Alarm/Snooze Input and Alarm Output Alarm/Snooze Input ( Deboucing Circuit) tSNZ 512Hz AO, AO1 AO AI/ SNZ tON 62.5 msec tON 62.5 msec tON 62.5 msec tON 62.5 msec tSNZ (Restart) tON 62.5 msec tON 2 sec tSTOP= 128 sec tSNZ= 0 sec 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 tCH AI/ SNZ (L to H) tON AI/ SNZ (H to L)