CF5746ADC

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 A...