Rainbow-electronics DS1386 Manual de usuario Pagina 1

1 of 20 072401FEATURES§ 8 or 32 kbytes of user NV RAM§ Integrated NV SRAM, real time clock,crystal, power-fail control circuit and lithiumenergy sou

DS1386/1386P10 of 20WAF - Bit 1 Watchdog Alarm Flag - This bit is set to a logic 1 when a watchdog alarm interrupt occurs.This bit is read only.The bi

DS1386/1386P11 of 20ABSOLUTE MAXIMUM RATINGS*Voltage on Any Pin Relative to Ground -0.3V to +7.0VOperating Temperature 0°C to 70°CStorage Temperature

DS1386/1386P12 of 20AC ELECTRICAL CHARACTERISTICS (0°C to 70°C; VCC = 5.0V ± 10%)DS1386XX-120PARAMETER SYMBOL MIN MAX UNITS NOTESRead Cycle Time tRC12

DS1386/1386P13 of 20READ CYCLE (Note 1) WRITE CYCLE 1 (Notes 2, 6, 7) WRITE CYCLE 2 (Notes 2, 8)

DS1386/1386P14 of 20TIMING DIAGRAM: INTERRUPT OUTPUTS PULSE MODE(SEE NOTES 11 AND 12)POWER-DOWN/POWER-UP TIMING

DS1386/1386P15 of 20AC ELECTRICAL CHARACTERISTICS POWER-UP/POWER-DOWN TIMING(0°C to 70°C)PARAMETER SYMBOL MIN MAX UNITS NOTESCE High to Power Fail tP

DS1386/1386P16 of 20NOTES1. WE is high for a read cycle.2. OE = VIH or VIL. If OE = VIH during write cycle, the output buffers remain in a high

DS1386/1386P17 of 20AC TEST CONDITIONS: AC TEST CONDITIONSInput Levels: 0V to 3V Output Load 50 pF + 1TTL GateTransition Times: 5 ns Input Pulse Level

DS1386/1386P18 of 20DS1386PPKG INCHESDIM MIN NOM MAXA 0.920 0.925 0.930B 0.980 0.985 0.990C - - 0.080D 0.052 0.055 0.058E 0.048 0.050 0.052F 0.015 0.0

DS1386/1386P19 of 20DS1386P WITH DS9034PCX ATTACHEDPKG INCHESDIM MIN NOM MAXA 0.920 0.925 0.930B 0.955 0.960 0.965C 0.240 0.245 0.250D 0.052 0.055 0.0

DS1386/DS1386P2 of 20ORDERING INFORMATIONDS1386 XX-120 32-pin DIP Module 08 8k x 8 NV SRAM32 32k x 8 NV SRAM*DS1386P XX-120 34-pin Power

DS1386/1386P20 of 20RECOMMENDED POWERCAP MODULE LAND PATTERNPKG INCHESDIM MIN NOM MAXA - 1.050 -B - 0.826 -C - 0.050 -D - 0.030 -E - 0.112 -

DS1386/1386P3 of 20PACKAGESThe DS1386 is available in two packages (32-pin DIP module and 34-pin PowerCap module). The 32-pinDIP style module integrat

DS1386/1386P4 of 20RAMIFIED TIMEKEEPER REGISTERSThe RAMified Timekeeper has 14 registers, which are 8 bits wide that contain all of the timekeeping,al

DS1386/1386P5 of 20BLOCK DIAGRAM Figure 1

DS1386/1386P6 of 20TIME OF DAY REGISTERSRegisters 0, 1, 2, 4, 6, 8, 9, and A contain time of day data in BCD. Ten bits within these eight registersare

DS1386/1386P7 of 20WATCHDOG ALARM REGISTERSRegisters C and D contain the time for the watchdog alarm. The two registers contain a time count from00.01

DS1386/1386P8 of 20DS1386 RAMIFED WATCHDOG TIMEKEEPER REGISTERS Figure 2

DS1386/1386P9 of 20TIME OF DAY ALARM MASK BITS Figure 3REGISTER(3) MINUTES (5) HOURS (7) DAYS1 1 1 ALARM ONCE PER MINUTE0 1 1 ALARM WHEN MINUTES MATCH