m41t83 STMicroelectronics, m41t83 Datasheet - Page 23

• Manufacturer Part Number: m41t83
• Description: Serial I 2c Bus Rtc With Battery Switchover
• Manufacturer: STMicroelectronics

Table 2.
1. See
2. AF2 will always read ‘0’, if the AL2E bit is set to ‘0’.
19h-1Fh
Addr
0Ah
0Bh
0Ch
0Dh
0Eh
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
0Fh
10h
11h
12h
13h
14h
15h
16h
17h
18h
Table 3: Key to Table 2: M41T82 clock/control register map (32 bytes)
RPT14
RPT13
RPT12
RPT11
RPT24
RPT23
RPT22
RPT21
WDF
ACS
CB1
D7
ST
TE
M41T82 clock/control register map (32 bytes)
0
0
0
0
0
0
0
0
0
RPT15
RPT25
BMB4
CB0
AF1
AC6
HT
D6
FT
0.1 seconds
0
0
0
0
0
0
0
0
Alarm1 10 seconds
Alarm2 10 seconds
Alarm1 10 minutes
Alarm2 10 minutes
10 years
10 seconds
10 minutes
BMB3
AF2
DCS
ABE
AC5
D5
AI1 10 hour
AI2 10 hour
0
0
AI1 10 date
0
0
0
AI2 10 date
10 hours
(2)
10 date
Timer countdown value
User SRAM (7 bytes)
Al1 10M
Al2 10M
BMB2
10M
DC4
AC4
D4
BL
0
0
0
BMB1
DC3
AC3
D3
TF
0
0
0
Hours (24 hour format)
Date: day of month
Alarm1 seconds
Alarm2 seconds
Alarm1 minutes
Alarm2 minutes
BMB0
Alarm2 month
Alarm1 month
Alarm2 month
0.01 seconds
DC2
AC2
Alarm1 date
Alarm1 hour
Alarm2 date
OF
D2
0
0
seconds
minutes
Month
Year
Day of week
(1)
AL2E
DC1
RB1
TD1
AC1
D1
0
DC0
RB0
AC0
TD0
D0
0
0
Analog calibration
SRAM/Al2 month
Digital calibration
SRAM/Al2 hour
SRAM/Al2 date
SRAM/Al2 min
SRAM/Al2 sec
Century/hours
Timer control
Timer value
Function/range BCD
Watchdog
Al1 month
seconds
seconds
Al1 date
Al1 hour
minutes
Al1 min
Al1 sec
SRAM
Month
SQW
Date
Flags
Year
Day
format
0-3/00-23
00-99
00-59
00-59
01-31
01-12
00-99
01-12
01-31
00-23
00-59
00-59
01-12
01-31
00-23
00-59
00-59
01-7
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