DS1302数据手册翻译.pdf

FEATURES: Real time clockcounts seconds, minutes,hours,date of the month,month, dayof the week, and yearwith leapyear compensation valid up to2100 31x8RAMfor scratchpaddata storage Serial I/O for minimum pin count 2.0–5.5Vfull operation Uses less than 300nA at 2.0V Single–byteor multiple–byte (burst mode) data transferfor read orwrite ofclock orRAM data 8–pinDIP oroptional 8–pin SOICsfor surfacemount Simple 3–wire interface TTL–compatible (VCC= 5V) Optional industrial temperature range–40°Cto +85°C DS1202compatible RecognizedbyUnderwriters Laboratory ( 特性： 能计算秒、分、时、日期、星期、月份和年的实时时钟，具有闰年补偿功能， 2100 有效期到 年； 31字节高速暂存RAM可用于数据存储； 只需要最少的串行I/O 口； 工作电压2.0–5.5V ； 2.0V 工作时电流小于300nA； 单字节数据，突发模式下允许多字节数据传输； 可读写时钟数据或者RAM内数据； 8-PDIP或者8pin-soic 封装； 精简的3线接口； 兼容TTL； 适用温度范围：–40°C to+85°C； 向下兼容DS1202； UnderwritersLaboratory可靠认证； ) PINDESCRIPTION: X1, X2 –32.768kHz Crystal Pins GND –Ground RST –Reset I/O –Data Input/Output SCLK –Serial Clock VCC1,VCC2–Power Supply Pins DESCRIPTION: The DS1302Trickle ChargeTimekeeping Chip contains areal time clock/calendar and31bytes ofstatic RAM. It communicates withamicroprocessor via asimple serial interface. The real time clock/calendar provides seconds, minutes,hours, day, date, month, and year information. The endof themonth date is automatically adjustedfor months with less that31days, including corrections for leap year. The clock operates ineither the24–hour or12–hourformat withanAM/PM indicator. Interfacing the DS1302with amicroprocessor is simplified by using synchronous serial communication.Only three wires arerequired tocommunicatewith the clock/RAM: (1) RST (Reset), (2) I/O (Dataline),and (3)SCLK (Serial clock). Datacanbetransferred toandfrom the clock/RAM 1byte at atime orin aburst ofup to31bytes. The DS1302is designed tooperate onvery low power and retain data andclock informationonless than 1microwatt. The DS1302