ACE5372 Datasheet, PDF (17/29 Pages) ACE Technology Co., LTD. – Low Power Real-Time Clock (RTC)

Technology
ACE5372
Low Power Real-Time Clock (RTC)
E)When a byte data is read and CPU sends 1 bit ACK signal, a next byte data can be read. Only when
the 1 bit ACK signal which is sent by CPU is high voltage, can the reading operation be stopped and
then CPU sends stop signals.
Example 1 of data read (when data is read from 7H to 9H)
Inform ACE5372 to stop read
CPU to ACE5372
ACE5372 to CPU
Acknowledge signal
Start signal
Stop signal
Repeat Start signal
II) The second method to reading data from the internal register is to start immediately after writing to the
internal address pointer and the transmission format register. Set 4h to the transmission format register
when this method is used.
Example 2 of data read (when data is read from internal address Dh to 0h)
Inform ACE5372 to stop read
CPU to ACE5372
ACE5372 to CPU
Start signal
Stop signal
Acknowledge signal
Repeat Start signal
VER 1.2 17