User manual

7. Real-Time Clock
74
Register D
Register: D
Address: Offset+0Dh
Access: Read
VRT 0
76
5
43210
0
00
0
0
0
Valid RAM
0 Invalid
1 Valid
Register D
ADDITIONAL INFORMATION
Refer to the National Semiconductor PC87306 datasheet for more information on the
real-time clock operating modes. The product folder for the PC87306, including the data
sheet, is available on the web site http://www.national.com/pf/PC/PC87306.html.