Rainbow Electronics AT73C246 User Manual
Page 131
131
11050A–PMAAC–07-Apr-10
AT73C246
Name: BACKUP_CTRL
Access:
Read / Write
Address: 0x56
Name: VERSION
Access: Read
Address: 0x7F
7
6
5
4
3
2
1
0
-
-
-
-
OSC_UPDT
OSC_EN
OSC_STAT
RST_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
0
2
OSC_EN
RTC Oscillator enable request
0: Oscillator off.
1: Oscillator on.
0
1
OSC_STAT
RTC Oscillator status (read only)
0: Oscillator off.
1: Oscillator on.
0
0
RST_BKUP
Reset of the Backup Area
0: Backup area active
1: Backup area in reset state
0
7
6
5
4
3
2
1
0
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
.
XXXX
3:0
VERSION
‘0001’: Rev. C samples
‘0010’: Rev. D samples
XXXX