Rainbow-electronics DDS1693 Uživatelský manuál

1 of 32 092800FEATURESIncorporates industry standard DS1287 PC clockplus enhanced features:§ +3- or +5V operation§ 64-bit silicon serial number§ 64

DS1689/DS169310 of 32A pattern of 01X in the DV2, DV1, and DV0, bits respectively, will turn the oscillator on and enable thecountdown chain. Note tha

DS1689/DS169311 of 32PERIODIC INTERRUPT RATE ANDSQUARE WAVE OUTPUT FREQUENCY Table 2EXT. REG. B SELECT BITS REGISTER AE32K RS3 RS2 RS1 RS0tPI PERIODIC

DS1689/DS169312 of 32REGISTER AMSB

DS1689/DS169313 of 32REGISTER BMSB

DS1689/DS169314 of 32REGISTER CMSB

DS1689/DS169315 of 32EXTENDED FUNCTIONSThe extended functions provided by the DS1689/DS1693 that are new to the RAMified RTC family areaccessed via a

DS1689/DS169316 of 32DS1689/DS1693 EXTENDED REGISTER BANK DEFINITION Figure 4

DS1689/DS169317 of 32SILICON SERIAL NUMBER/CUSTOMER SPECIFIC ROMA total of 128 bits are available for use as serial number/ROM. These bits may be used

DS1689/DS169318 of 32Similarly, the kickstart feature is controlled through the Kickstart Interrupt Enable bit in extended controlregister B (KSE, ban

DS1689/DS169319 of 32addition, the other possible interrupt sources within the DS1689/DS1693 may cause IRQ to be drivenlow. While system power is ap

DS1689/DS16932 of 32DESCRIPTIONThe DS1689/DS1693 is a real time clock (RTC) designed as a successor to the industry standard DS1285,DS1385, DS1485, an

DS1689/DS169320 of 32VRT2 - This status bit gives the condition of the auxiliary battery. It is set to a logic 1 condition when theexternal lithium ba

DS1689/DS169321 of 32IRQ and PWR will be driven low in response to WF being set to 1. When WIE is cleared to a 0, the WFbit will have no effect on

DS1689/DS169322 of 32ABSOLUTE MAXIMUM RATINGS*Voltage on Any Pin Relative to Ground -0.3V to +7.0VStorage Temperature -40°C to +70°CSoldering Temper

DS1689/DS169323 of 32DC ELECTRICAL CHARACTERISTICS Over the operating range (5V)PARAMETER SYMBOL MIN TYP MAX UNITS NOTESAverage VCC Power Supply Curre

DS1689/DS169324 of 32DC ELECTRICAL CHARACTERISTICSOver the operating range (3V)PARAMETER SYMBOL MIN TYP MAX UNITS NOTESAverage VCC Power Supply Curren

DS1689/DS169325 of 32DS1689/DS1693 BUS TIMING FOR READ CYCLE TO RTCRTC AC TIMING CHARACTERISTICSOver the operating range (5V)PARAMETER SYMBOL MIN TYP

DS1689/DS169326 of 32DS1689/DS1693 BUS TIMING FORWRITE CYCLE TO RTC AND RTC REGISTERSPOWER-UP CONDITION 3-VOLT OPERATION

DS1689/DS169327 of 32POWER-DOWN CONDITION 3-VOLT OPERATIONPOWER-UP CONDITION 5.0-VOLT OPERATIONPOWER-DOWN CONDITION 5.0-VOLT OPERATION

DS1689/DS169328 of 32POWER-UP POWER-DOWN TIMING 5-VOLT OPERATION (tA = 25°C)PARAMETER SYMBOL MIN TYP MAX UNITS NOTESCS High to Power-Fa

DS1689/DS169329 of 32WAKE-UP/KICKSTART TIMINGNOTE:Time intervals shown above are referenced in Wake-up/Kickstart section.* This condition can occur w

DS1689/DS16933 of 32VCCO (External SRAM Power Supply Output) - This pin will be internally connected to VCCI whenVCCI is within nominal limits. Howeve

DS1689/DS169330 of 32NOTES:1. All voltages are referenced to ground.2. Typical values are at 25°C and nominal supplies.3. Outputs are open.4. Valu

DS1689/DS169331 of 32DS1689S 28-PIN SOIC PKG 28-PINDIM MIN MAXA IN.MM0.69717.700.72818.50B IN.MM0.3248.230.3508.90C IN.MM0.0872.200.1183.00D IN.

DS1689/DS169332 of 32DS1693 28-PIN 740-MIL MODULEPKG 28-PINDIM MIN MAXA IN.MM1.52038.611.54039.12B IN.MM0.69517.650.74018.80C IN.MM0.3508.890.3759.

DS1689/DS16934 of 32AD0-AD7 (Multiplexed Bi-directional Address/Data Bus) - Multiplexed buses save pins becauseaddress information and data informatio

DS1689/DS16935 of 32KS (Kickstart Input; active low) - When VCC is removed from the DS1689/DS1693, the system can bepowered on in response to an acti

DS1689/DS16936 of 32When 5-volt operation is selected, the device is fully accessible and data can be written and read onlywhen VCCI is greater than 4

DS1689/DS16937 of 32TIME, CALENDAR AND ALARM LOCATIONSThe time and calendar information is obtained by reading the appropriate register bytes shown in

DS1689/DS16938 of 32TIME, CALENDAR AND ALARM DATA MODES Table 1RANGEADDRESSLOCATIONFUNCTIONDECIMALRANGEBINARY DATAMODEBCD DATAMODE00H Seconds 0-59 00-

DS1689/DS16939 of 32The application software can select which interrupts, if any are to be used. There are a total of 6 bitsincluding 3 bits in Regist