M41T65Q6F STMicroelectronics, M41T65Q6F Datasheet - Page 22

• Manufacturer Part Number: M41T65Q6F
• Description: IC RTC SERIAL W/ALARM 16QFN
• Manufacturer: STMicroelectronics
• Type: Clock/Calendar/Alarmr

Specifications of M41T65Q6F

• Memory Size: 16B
• Time Format: HH:MM:SS:hh (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 1.3 V ~ 4.4 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-QFN
• Function: Clock/Calendar/Alarm/Timer Interrupt
• Rtc Memory Size: 16 Byte
• Supply Voltage (max): 4.4 V
• Supply Voltage (min): 1.3 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Rtc Bus Interface: Serial (2-Wire, I2C)
• Supply Current: 50 uA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-3908-2

Clock operation
22/43
Table 5.
Keys:
0 = must be set to '0'
32KE = 32 KHz enable bit
AF = alarm flag (read only)
BMB0 - BMB4 = watchdog multiplier bits
CB0-CB1 = century bits
OF = oscillator fail bit
RB0 - RB2 = watchdog resolution bits
RPT1-RPT5 = alarm repeat mode bits
RS0-RS3 = SQW frequency bits
S = sign bit
SQWE = square wave enable bit
ST = stop bit
WDF = watchdog flag bit (read only)
Addr
0Ah
0Bh
0Ch
0Dh
0Eh
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
0Fh
RPT4
RPT3
RPT2
RPT1
WDF
RS3
CB1
RB2
D7
ST
0
0
0
0
0
M41T64 register map
SQWE
BMB4
RPT5
RS2
CB0
0.1 seconds
D6
AF
0
0
0
0
Alarm 10 seconds
10 years
Alarm 10 minutes
10 seconds
10 minutes
BMB3 BMB2 BMB1 BMB0
32KE Al 10M
RS1
D5
AI 10 hour
AI 10 date
S
0
0
10 hours
10 Date
Doc ID 10397 Rev 15
RS0
10M
D4
0
D3
0
0
Hours (24-hour format)
Calibration
Date: day of month
Alarm seconds
Alarm minutes
0.01 seconds
Alarm month
Alarm hour
OF
D2
Alarm date
Seconds
Minutes
Month
Day of week
Year
RB1
D1
0
RB0
D0
0
10ths/100ths
of seconds
Calibration
Watchdog
Function/range BCD
Al month
Seconds
Century/
Minutes
Al hour
Al date
month
Al min
Hours
Al sec
Date
Flags
Year
Day
M41T62/63/64/65
format
0-3/01-12
00-59
00-23
01-31
00-99
00-59
00-99
01-12
01-31
00-23
00-59
00-59
01-7