Rainbow-electronics AT73C246 Manual de usuario descargar pdf (Pagina 131)

131

11050A–PMAAC–07-Apr-10

AT73C246

Name: BACKUP_CTRL

Access: Read / Write

Address: 0x56

Name: VERSION

Access: Read

Address: 0x7F

76543210

----OSC_UPDTOSC_ENOSC_STATRST_BKUP

Table 13-90. BACKUP_CTRL (0x56) Structure

Bit Name Description Reset value

7:4 - unused 0000

3 OSC_UPDT

RTC Oscillator update

0: No action.

1: Update RTC oscillator with OSC_EN

2OSC_EN

RTC Oscillator enable request

0: Oscillator off.

1: Oscillator on.

1OSC_STAT

RTC Oscillator status (read only)

0: Oscillator off.

1: Oscillator on.

0 RST_BKUP

Reset of the Backup Area

0: Backup area active

1: Backup area in reset state

76543210

SOFTWARE_TAG VERSION

Table 13-91. VERSION (0x7F) Structure

Bit Name Description Reset value

7:4

SOFTWARE_TAG

Software Tag to identify product specificities as

described in Section 17. “Ordering Information”

on page 154.

XXXX

3:0 VERSION

‘0001’: Rev. C samples

‘0010’: Rev. D samples

XXXX

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