M41TTHSMH6E STMICROELECTRONICS [STMicroelectronics], M41TTHSMH6E Datasheet - Page 19

• Manufacturer Part Number: M41TTHSMH6E
• Description: Serial Real Time Clock with 44Bytes NVRAM and Reset
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

M41T94
Table 4.
1. Keys:
Addr
0Ah
0Bh
0Ch
0Dh
0Eh
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
0Fh
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
RB0-RB1 = Watchdog Resolution bits
WDS = Watchdog Steering bit
ABE = Alarm in Battery Back-Up mode Enable bit
RPT1-RPT5 = Alarm Repeat mode bits
WDF = Watchdog Flag (Read only)
WDF = Watchdog Flag (Read only)
AF = Alarm Flag (Read only)
SQWE = Square Wave Enable
RS0-RS3 = SQW Frequency
HT = Halt Update bit
TR = t
REC
RPT4 RPT5
RPT3
RPT2
RPT1
WDS BMB4 BMB3
WDF
CEB
OUT
AFE SQWE
RS3
D7
ST
TR
0
0
0
0
0
0
bit
Clock register map
RS2
CB
D6
HT
AF
FT
0.1 seconds
0
0
0
0
0
0
Alarm 10 seconds
Alarm 10 minutes
10 Years
10 seconds
10 minutes
ABE
RS1
D5
S
0
0
AI 10 hour
0
0
0
0
AI 10 date
10 Hours
10 date
Al 10M
BMB2 BMB1 BMB0
10M
RS0
D4
BL
(1)
0
0
0
0
D3
0
0
0
0
0
0
Hours (24 hour format)
Calibration
Date: day of month
Alarm Seconds
Alarm minutes
0.01 seconds
Alarm month
Alarm date
Alarm hour
D2
Seconds
0
0
0
0
0
Minutes
Month
Day of week
Year
RB1
D1
0
0
0
0
0
RB0
D0
0
0
0
0
0
Century/hours 0-1/00-23
Watchdog
Reserved
Reserved
Reserved
Al month
Seconds
Seconds
Minutes
Control
Al hour
Al date
Al min
Month
Al sec
SQW
Function/range
Date
Flags
Year
Day
BCD format
Clock operations
00-99
00-59
00-59
01-31
01-12
00-99
01-12
01-31
00-23
00-59
00-59
01-7
19/40