CF5760EA

CF5760 series NIPPON PRECISION CIRCUITS INC. CMOS Analog Clock IC OVERVIEW The CF5760 series devices 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 I I I I I I I I PAD LAYOUT T op view 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××) VDD AI/R O1 1 2 9 8 XT XTN AON AO VSS 3 7 6 O2 (0,0) 4 HA5760 5 C hip size: 0.76 × 1 .21 mm Chip thickness: 300 ± 30 µm P ad size: 100 × 1 00 µm R e verse side: V D D l evel SERIES CONFIGURATION CF5760AA B uilt-in capacitance 1 C ( pF) D C G ( pF) 3 25 H I G H / L OW LOW 1 23.4 AO HIGH 4 8 900 900 AO N LOW 4 8 900 900 AO HIGH DC – 900 10 C F 5 7 6 0 BA 3 25 H I G H / L OW LOW 1 23.4 AO N F ( 32kHz) CF5760CC 3 33 LOW/HIGH HIGH 1 31.25 AO HIGH 2 8+1 900 900 AO N LOW 2 8+1 900 900 C F 5 7 6 0 DA 3 25 LOW/HIGH LOW 1 27.3 AO HIGH DC – 900 10 AO N F ( 32kHz) CF5760EA 3 25 –/LOW – 1 1000 AO – – – – – AO N – – – – – CF5760FC 3 33 LOW/HIGH – 0.0625 62.5 AO HIGH 2 8+1 900 900 AO N LOW 2 8+1 900 900 CF5760HA 3 25 LOW/HIGH HIGH 1 46.875 AO HIGH 2 8+1 900 900 AO N LOW 2 8+1 900 900 C F 5 7 6 0 JA 3 25 LOW/HIGH – 0.0625 62.5 AO HIGH DC – 900 10 AO N F ( 32kHz) Alarm input/reset input level Active level Motor output Needle period tC Y ( s) Pulsewidth tP W ( ms) Pins Active level F requency fP W ( kHz) Modulation fC Y ( Hz) IO H m in ( µA ) IO L m in ( µA ) – – 10 10 – – 10 10 – – 10 10 Alarm output 1 . Built-in capacitance includes the parasitic capacitance. ORDERING INFORMATION D e vice C F 5 7 6 0 ×× P ackag e C hip form NIPPON PRECISION CIRCUITS—1 C F5760 series BLOCK DIAGRAM VSS VDD CG XT CD 7 Stage Divider 9 Stage Divider XTN AI/R Reset Input Alarm Input Alarm Output Control Motor Output Control AO AON O1 O2 PAD DESCRIPTION/DIMENSIONS Dimensions (µm) N o. 1 2 3 4 5 6 7 8 9 Name VDD AI/R O1 O2 VSS AO AO N XTN XT Supply Alarm input and reset input Motor output 1 Motor output 2 Ground Alarm output 1 Alarm output 2 Oscillator output Oscillator input Description X 155 155 155 145 615 615 615 615 615 Y 1065 854 620 145 145 325 505 746 1065 NIPPON PRECISION CIRCUITS—2 C F5760 series SPECIFICATIONS Absolute Maximum Ratings P arameter S upply voltage range Input voltage range Operating temperature range Storage temperature range Symbol VDD − VSS V IN T o pr T s tg Condition Rating −0 .3 to 5.0 V S S ≤ V IN ≤ V D D −3 0 to 80 −6 5 to 150 Unit V V °C °C 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 P arameter O perating voltage Current consumption Oscillator start-up time Motor output current AI/R HIGH-level input current AI/R LOW -level input current Oscillator frequency stability Alarm L OW -level output current 2 ( AO , AO N ) Alarm HIGH-level output current 2 ( AO , AO N ) F output voltage 3 Internal capacitance 4 Symbol VDD ID D tS TA IM O T II H II L ∆f/f IO L 1 IO L 2 IO H 1 IO H 2 VF CG CD O 1 = O2 = open V D D = 1 .2V V D D = 1 .2V, R L = 2 00 Ω 1 V D D = 1 .5V V D D = 1 .5V V D D = 1 .2 to 2.0V V D D = 1 .5V, V O L = 0 .75V V D D = 1 .5V, V O L = 0 .75V V D D = 1 .5V, V O H = 0 .75V V D D = 1 .5V, V O H = 0 .75V V D D = 1 .2V, C L = 5 0pF Condition min 1 .2 – – 4.0 2 2 – 900 10 900 10 0.4 typ – 1.2 – – 4 4 0.5 2000 30 2000 30 – max 2.0 4.0 5.0 – 8 8 1.0 – – – – – V µA s mA µA µA ppm/0.1V µA µA µA µA V pF R efer to the SERIES LINEUP pF Unit 1 . R L i s the load resistance connected between O1 and O2. 2. CF5760AA/ CC/ FC/ HA: If the outputs (AO or AON) are shor t circuit, the output current is I A O ≥ 9 00 µA . 3 . The F output voltage rating, V F, when a load capacitance, C L , i s connected between pin F and V S S , is the difference voltage between the center voltage, 0.5V D D , a nd the peak voltage. 4 . C G i s the capacitance between V D D a n d X T. C D i s the capacitance between VDD and XTN. NIPPON PRECISION CIRCUITS—3 C F5760 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 62.5ms O2 tCY 62.5ms tPW 62.5ms tCY : Needle period tPW : Pulse width 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) tO N < 6 2.5ms: input is ignored. 62.5 ≤ tO N ≤ 1 25ms: indeterminate tO N > 1 25ms: 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. NIPPON PRECISION CIRCUITS—4 C F5760 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 tCY tCY −125msec +0 Alarm Output Alarm output waveform tON AI/R (Active High) AO (Active High) fCY (Hz) *1 AON (Active Low) fPW(Hz) * 1: Opposite phase to AO . fP W = a larm fundamental frequency fC Y = a larm 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). NIPPON PRECISION CIRCUITS—5 C F5760 series TYPICAL APPLICATION CIRCUITS Alarm (HIGH)/Reset (LOW), Piezoelectric alarm VDD CG XT X'tal Alarm Switch AI/R AON Reset Switch VSS O1 M 3kΩ XTN O2 AO Piezo Speaker Reset (HIGH)/Alarm (LOW), DC Output, F Output VDD CG XT X'tal Reset Switch AI/R F 3kΩ Alarm Switch VSS O1 M M Motor Bell XTN O2 AO NIPPON PRECISION CIRCUITS—6 C F5760 series N IPPON 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 expor t controls on the distribution or dissemination of the products. Customers shall not expor t, directly or indirectly, any products without first obtaining required licenses and approvals from appropriate government agencies. NIPPON PRECISION CIRCUITS INC. 4-3, Fukuzumi 2-chome Koto-ku, Tokyo 135-8430, Japan Telephone: 03-3642-6661 Facsimile: 03-3642-6698 NC9812BE 2000.09 NIPPON PRECISION CIRCUITS INC. NIPPON PRECISION CIRCUITS—7