DS1307ZN データシートの表示（PDF） - Dallas Semiconductor -> Maxim Integrated

部品番号

コンポーネント説明

メーカー

DS1307ZN

64 x 8 Serial Real-Time Clock

Dallas Semiconductor -> Maxim Integrated 

TYPICAL OPERATING CIRCUIT

DS1307

OPERATION

The DS1307 operates as a slave device on the serial bus. Access is obtained by implementing a START

condition and providing a device identification code followed by a register address. Subsequent registers

can be accessed sequentially until a STOP condition is executed. When VCC falls below 1.25 x VBAT the

device terminates an access in progress and resets the device address counter. Inputs to the device will

not be recognized at this time to prevent erroneous data from being written to the device from an out of

tolerance system. When VCC falls below VBAT the device switches into a low-current battery backup

mode. Upon power-up, the device switches from battery to VCC when VCC is greater than VBAT + 0.2V

and recognizes inputs when VCC is greater than 1.25 x VBAT. The block diagram in Figure 1 shows the

main elements of the serial RTC.

DS1307 BLOCK DIAGRAM Figure 1

2 of 12

Share Link: