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SM8580 Datenblatt(PDF) 1 Page - Nippon Precision Circuits Inc |
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SM8580 Datenblatt(HTML) 1 Page - Nippon Precision Circuits Inc |
1 / 23 page SM8580AM NIPPON PRECISION CIRCUITS—1 NIPPON PRECISION CIRCUITS INC. Real-time Clock IC with 4-bit Interface and Built-in Temperature Sensor OVERVIEW The SM8580AM is a real-time clock IC based on a 32.768 kHz crystal oscillator, which features a 4-bit paral- lel interface for communication with an external microcontroller. It comprises second-counter to year-counter clock and calendar circuits that feature automatic leap-year adjust- ment up to year 2099, alarm and timer interrupt functions, clock counter change detect functions, ±30-second correction function, time error correction function, and built-in temperature sensor. The 4-bit parallel interface is compatible with general-purpose SRAM over a high-speed bus. FEATURES s High-speed bus 4-bit parallel interface s Date, day, hour, minute, and second-counter pre- settable alarm interrupt s 1/4096 seconds to 255 minutes presettable interval timer interrupt function s 2 software-maskable alarm and timer interrupt outputs s Clock counter change detect functions s 4-digit western calendar display s Automatic leap year correction up to year 2099 s ±30-second adjust function s −195 to +192ppm time error correction range s Built-in temperature sensor (analog voltage out- put) s 2.4 to 5.5V interface voltage range s 1.6 to 5.5V clock voltage range s 0.6µA/3V (typ) current consumption ORDERING INFORMATION PINOUT (Top view) D e vice P a ck ag e SM8580AM 24-pin SSOP 1 13 24 12 CE0N FCON FOUT VTEMP AIRQN TIRQN A0 VDD XT XTN N.C. N.C. N.C. CE1 A1 A2 A3 RDN VSS D0 D1 D2 D3 WRN |
Ähnliche Teilenummer - SM8580 |
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Ähnliche Beschreibung - SM8580 |
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