M41T82RM6F STMicroelectronics, M41T82RM6F Datasheet - Page 21

• Manufacturer Part Number: M41T82RM6F
• Description: IC RTC SERIAL W/BATT SW 8-SOIC
• Manufacturer: STMicroelectronics
• Type: Clock/Calendar/Alarmr

Specifications of M41T82RM6F

• Memory Size: 32B
• Time Format: HH:MM:SS:hh (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-8279-2; M41T82RM6F

M41T82-M41T83
Table 2.
1. See
2. AF2 will always read 0, if the AL2E bit is set to 0.
3. As indicated in
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
are SRAM locations and these bits become SRAM cells which are thus excluded from that restriction.
Table 3: Key to Table 2: M41T82 clock/control register map (32 bytes)
RPT14
RPT13
RPT12
RPT11
RPT24
RPT23
RPT22
RPT21
WDF
ACS
CB1
0
TE
D7
ST
M41T82 clock/control register map (32 bytes)
0
0
0
0
0
0
0
0
(3)
Table
RPT15
RPT25
BMB4
CB0
AC6
AF1
3, the 0 bits should be written to 0. But in the case of these four bits, when AL2E is 0, registers 14-18h
0
0
D6
HT
FT
0.1 seconds
0
0
0
0
0
0
(3)
(3)
Alarm1 10 seconds
Alarm2 10 seconds
Alarm1 10 minutes
Alarm2 10 minutes
10 years
10 seconds
10 minutes
AF2
BMB3
DCS
ABE
AC5
0
D5
AI1 10 hour
0
0
AI1 10 date
0
0
AI2 10 date
AI2 10 hour
(3)
10 hours
(2)
10 date
Timer countdown value
User SRAM (7 bytes)
Al1 10M
Al2 10M
BMB2
DC4
10M
AC4
D4
BL
0
0
0
Doc ID 12578 Rev 12
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
Alarm1 month
Alarm2 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
TD0
AC0
D0
0
0
Analog calibration
SRAM/Al2 month
Digital calibration
SRAM/Al2 date
SRAM/Al2 hour
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
Clock operation
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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