M41ST85WMX6 STMicroelectronics, M41ST85WMX6 Datasheet - Page 20
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M41ST85WMX6
Manufacturer Part Number
M41ST85WMX6
Description
IC RTC 3.0V NVRAM 28SOIC
Manufacturer
STMicroelectronics
Type
Clock/Calendar/Supervisorr
Specifications of M41ST85WMX6
Memory Size
64B
Time Format
HH:MM:SS:hh (24 hr)
Date Format
YY-MM-DD-dd
Interface
I²C, 2-Wire Serial
Voltage - Supply
2.7 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
28-SOIC, 28-SOH (8.48mm Width)
Function
Clock/Calendar/Supervisor/Alarm
Rtc Memory Size
64 Byte
Supply Voltage (max)
3.6 V
Supply Voltage (min)
2.7 V
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Rtc Bus Interface
Serial (2-Wire, I2C)
Memory Configuration
64 X 8
Nvram Features
RTC, Internal Battery, XTAL
Interface Type
I2C, Serial, 2-Wire
Supply Voltage Range
2.7V To 3.6V
Memory Case Style
SO
No. Of Pins
28
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-2805-5
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
M41ST85WMX6
Manufacturer:
ST
Quantity:
20 000
Part Number:
M41ST85WMX6TR
Manufacturer:
ST
Quantity:
20 000
Clock operation
Table 2.
20/41
Keys:
Address
0Ah
0Bh
0Ch
0Dh
0Eh
0Fh
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
10h
11h
12h
13h
S = Sign bit
FT = Frequency test bit
ST = Stop bit
0 = Must be set to zero
BL = Battery low flag (read only)
BMB0-BMB4 = Watchdog multiplier bits
CEB = Century enable bit
CB = Century bit
OUT = Output level
AFE = Alarm flag enable flag
RPT4
RPT3
RPT2
RPT1
WDS
WDF
TIMEKEEPER
CEB
OUT
AFE
RS3
TR
D7
ST
0
0
0
0
0
0
SQWE
BMB4
RPT5
RS2
0.1 seconds
CB
D6
HT
AF
FT
0
0
0
0
0
0
Alarm 10 seconds
10 years
Alarm 10 minutes
10 seconds
10 minutes
®
BMB3
ABE
RS1
register map
D5
S
AI 10 date
AI 10 hour
0
0
0
0
0
0
10 hours
10 date
Al 10M
BMB2
10M
RS0
D4
BL
0
0
0
0
Data
BMB1
D3
0
0
0
0
0
0
Hours (24-hour format)
Calibration
Date: day of month
RPT1-RPT5 = Alarm repeat mode bits
RB0-RB1 = Watchdog resolution bits
WDS = Watchdog steering bit
ABE = Alarm in battery backup mode enable bit
WDF = Watchdog flag (read only)
AF = Alarm flag (read only)
SQWE = Square wave enable
RS0-RS3 = SQW frequency
HT = Halt update bit
TR = t
BMB0
Alarm seconds
Alarm minutes
0.01 seconds
Alarm month
D2
Alarm hour
Alarm date
0
0
0
0
0
Seconds
Minutes
Month
rec
Year
Day of week
bit
RB1
D1
0
0
0
0
0
RB0
D0
0
0
0
0
0
Century/hours
Watchdog
Reserved
Reserved
Reserved
Seconds
Seconds
Al month
Minutes
Control
Al hour
Al date
Month
Al min
Al sec
SQW
Date
Flags
Year
Day
Function/range
BCD format
M41ST85W
0-1/00-23
00-99
00-59
00-59
01-31
01-12
00-99
01-12
01-31
00-59
00-59
00-23
01-7