W83977F-A Datasheet, PDF (105/182 Pages) Winbond – WINBOND I/O

W83977F-A/ W83977G-A/ W83977AF-A/ W83977AG-A
TABLE 9.1.2 - REAL TIME CLOCK ADDRESS MAP BANK 1
ADDRESS
REGISTER TYPE
REGISTER FUNCTION
00h-7Fh
R/W
Register 0h-7Fh : user RAM
Bank 2 has 13 registers, 1 Century register, 8 Alarm B registers and 4 control/status registers for "On-
Now" function.
TABLE 9.1.3 - REAL TIME CLOCK "ON-NOW" ADDRESS MAP BANK 2
ADDRESS
REGISTER TYPE
REGISTER FUNCTION
40h
R/W
Register 40h : Centuries
41h
R/W
Register 41h : Seconds Alarm B
42h
R/W
Register 42h : Minutes Alarm B
43h
R/W
Register 43h : Hours Alarm B
44h
R/W
Register 44h : Day of Week Alarm B
45h
R/W
Register 45h : Date of Month Alarm B
46h
R/W
Register 46h : Month Alarm B
47h
R/W
Register 47h : Year Alarm B
48h
R/W
Register 48h : Century Alarm B
49h
R/W
Register 49h : "On-Now" Control Register 1
4Ah
R/W
Register 4Ah : "On-Now" Control Register 2
4Bh
R
Register 4Bh : "On-Now" Status Register 3
4Ch
R/W
Register 4Ch : "On-Now" Control/Status Register 4
Time, Calendar, Alarm A, and Alarm B data Modes
REGISTER
FUNCTION
RANGE(DATA MODE)
LOCATION
BINARY
BCD
Register 00h Seconds
00h-3Bh
00h-59h
Register 01h Sec. Alarm A 00h-3Bh
00h-59h
Register 02h Minutes
00h-3Bh
00h-59h
Register 03h Min. Alarm A 00h-3Bh
00h-59h
Register 04h
Hours
01h-0Ch(AM)
(12-Hour Mode) 81h-8Ch(PM)
(24-Hour Mode) 00h-17h
01h-12h(AM)
81h-92h(PM)
00h-23h
EXAMPLE
BINARY
BCD
1Eh
30h
1Eh
30h
1Eh
30h
1Eh
30h
08h
08h
08h
08h
Publication Release Date: May 2006
-97 -
Revision 0.60