器件名称:
SM8580AM
功能描述:
Real-time Clock IC with 4-bit Interface and Built-in Temperature Sensor
文件大小:
179KB 共23页
简 介:
NIPPON PRECISION CIRCUITS INC. SM8580AM 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 parallel interface for communication with an external microcontroller. It comprises second-counter to year-counter clock and calendar circuits that feature automatic leap-year adjustment 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 s PINOUT (Top view) s s s s s s s s s s s High-speed bus 4-bit parallel interface Date, day, hour, minute, and second-counter presettable alarm interrupt 1/4096 seconds to 255 minutes presettable interval timer interrupt function 2 software-maskable alarm and timer interrupt outputs Clock counter change detect functions 4-digit western calendar display Automatic leap year correction up to year 2099 ±30-second adjust function 195 to +192ppm time error correction range Built-in temperature sensor (analog voltage output) 2.4 to 5.5V interface voltage range 1.6 to 5.5V clock voltage range 0.6A/3V (typ) current consumption CE0N FCON FOUT VTEMP AIRQN TIRQN A0 A1 A2 A3 RDN VSS 1 24 VDD XT XTN N.C. N.C. N.C. CE1 D0 D1 D2 D3 SM8580AM 12 13 ORDERING INFORMATION D e vice SM8580AM P ……
