CF5741BB

CF5741 series NIPPON PRECISION CIRCUITS INC. Analog Clock CMOS IC OVERVIEW The CF5741 series are analog clock driver ICs using 32.768kHz reference frequency of crystal oscillator. Some versions in accordance with the combinations of each motor drive and alarm output characteristics can provide a wide range of applications for various clock specifications. PINOUT (Top View) VSS AO1 AO2/F Y XTN XT (0,0) 1 2 3 4 5 SA5741 10 9 8 7 6 OUT2 OUT1 AI RST/TC VDD FEATURES s s s s s s s s s Operating voltage 1.2 to 2.0V Low current 1.2µA (typ) / 1.5V Built-in oscillator circuits (32.768 kHz) Built-in crystal oscillator capacitors (CG, CD) Motor output Various motor output Alarm output Various alarm output Reset function Input debounce function (AI, RST/TC) Chip form (CF5741××) X Chip size : 1.22 × 1.20 mm Chip thickness : 400 ± 30 µm Pad size : 100 × 100 µm Reverse side : V DD level SERIES LINEUP CF5741AA Built-in capacitor Reset input XT terminal CG (pF) XTN terminal CD (pF) Active level Active level Motor output Hand drive cycle tCY (sec) Pulse width tPW (msec) Alarm input Active level Test function (1/2VDD ) Terminal Alarm output Active level Fundamental frequency fPW (Hz) Modulation frequency fCY (Hz) AO1 High 2048 8+1 0 25 Low (Pull-up resistor) High 1 31.25 Low (Pull-up resistor) Yes AO2/F High 32 − AO1 High 2048 8+1 CF5741AB 25 25 Low (Pull-up resistor) High 1 31.25 Low (Pull-up resistor) Yes AO2/F High 32 − AO1 High 2048 8+1 CF5741BA 0 25 Low (Pull-up resistor) High ...