M41T0 STMICROELECTRONICS [STMicroelectronics], M41T0 Datasheet - Page 15

• Manufacturer Part Number: M41T0
• Description: SERIAL REAL-TIME CLOCK
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Table 8. Register Map
Keys: ST = STOP Bit
Note: 1. When CEB is set to '1', CB will toggle from '0' to '1' or from '1' to '0' at the turn of the century (dependent upon the initial value set).
Address
0
1
2
3
4
5
6
7
OUT = Output level
X = Don’t care
0 = Must be set to '0.'
When CEB is set to '0', CB will not toggle.
CEB
OUT
D7
ST
OF
X
X
X
(1)
CB
D6
X
X
X
0
10 Years
10 Seconds
10 Minutes
D5
X
X
X
10 Hours
10 Date
10 M.
D4
X
X
Data
D3
X
X
D2
X
Seconds
Minutes
Month
Hours
Years
Date
CEB = Century Enable Bit
CB = Century Bit
OF = Oscillator Fail Bit
Day
D1
X
D0
X
Century/Hours
Seconds
Minutes
Control
Month
Date
Year
Function/Range
Day
BCD Format
0-1/00-23
00-59
00-59
01-07
01-31
01-12
00-99
M41T0
15/20