AT73C224-B_14 Datasheet, PDF (26/75 Pages) ATMEL Corporation – Ultra-low Power Real-time Clock (RTC) and Backup Battery Management

6.2.4 BUCK2 Control Register
Register Name:
BCK_CTROL
Access Type:
Read/Write
Address:
0x13
7
6
5
4
3
2
1
0
–
–
–
–
–
–
BYP
EN(*)
A minimum of 3 clock cycles of 15 kHz clock must be waited after any write operation before doing a new register access.
• EN:
Writing EN to 1 starts the BUCK converter.
Writing EN to 0 stops the BUCK converter.
(*): Default value depends on the chosen AT73C224-x device (see Section 5.2).
• BYP:
Writing BYP to 1 puts the BUCK2 output voltage to VDD2.
Writing BYP to 0 configures the BUCK2 in Normal operation (default).
26 AT73C224
6266A–PMAAC–08-Sep-08