Rainbow-electronics DS1558Y Manual do Utilizador Página 15
- Página / 18
- Índice
- MARCADORES
- Watchdog Clock with 1
- NV RAM Control 1
- TYPICAL OPERATING CIRCUIT 2
- DESCRIPTION 2
- Figure 1. BLOCK DIAGRAM 3
- SIGNAL DESCRIPTIONS 3
- Table 1. OPERATING MODES 5
- DATA READ MODE 5
- DATA WRITE MODE 5
- DATA RETENTION MODE 5
- BATTERY LONGIVITY 6
- INTERNAL BATTERY MONITOR 6
- POWER-ON RESET 6
- OSCILLATOR STARTUP TIME 7
- READING THE CLOCK 8
- SETTING THE CLOCK 8
- CLOCK ACCURACY 8
- FREQUENCY TEST MODE 8
- USING THE CLOCK ALARM 8
- Table 3. ALARM MASK BITS 9
- USING THE WATCHDOG TIMER 10
- POWER-ON DEFAULT STATES 10
- ABSOLUTE MAXIMUM RATINGS* 11
- DC ELECTRICAL CHARACTERISTICS 12
- CRYSTAL SPECIFICATIONS 12
- = +5.5V ±10% V 13
- = +3.3V ±10% 13
- = +5.0V ±10% V 14
- 15 of 18 15
- 16 of 18 16
- CE or WE at V 16
- RST High 16
- 17 of 18 17
- IRQ /FT, RST , and 17
- AC TEST CONDITIONS 18
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